CN105625074A - Process for preparing pulp from hemp stems - Google Patents
Process for preparing pulp from hemp stems Download PDFInfo
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- CN105625074A CN105625074A CN201610100734.6A CN201610100734A CN105625074A CN 105625074 A CN105625074 A CN 105625074A CN 201610100734 A CN201610100734 A CN 201610100734A CN 105625074 A CN105625074 A CN 105625074A
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- hemp stalk
- water
- massfraction
- fiber
- chinese hemp
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- 239000011487 hemp Substances 0.000 title claims abstract description 118
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 117
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 117
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 117
- 235000009120 camo Nutrition 0.000 title claims abstract description 117
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 117
- 238000004519 manufacturing process Methods 0.000 title abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 132
- 238000000034 method Methods 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000007654 immersion Methods 0.000 claims abstract description 39
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims abstract description 23
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 15
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 102
- 241000209094 Oryza Species 0.000 claims description 78
- 235000007164 Oryza sativa Nutrition 0.000 claims description 78
- 235000009566 rice Nutrition 0.000 claims description 78
- 239000011734 sodium Substances 0.000 claims description 37
- 229920000297 Rayon Polymers 0.000 claims description 22
- 238000007598 dipping method Methods 0.000 claims description 20
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 12
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 abstract description 26
- 238000012216 screening Methods 0.000 abstract description 20
- 238000005406 washing Methods 0.000 abstract description 19
- 238000004061 bleaching Methods 0.000 abstract description 17
- 239000003344 environmental pollutant Substances 0.000 abstract description 9
- 231100000719 pollutant Toxicity 0.000 abstract description 9
- 239000003513 alkali Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 2
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 230000001603 reducing effect Effects 0.000 abstract 1
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
- 239000000047 product Substances 0.000 description 29
- 238000005265 energy consumption Methods 0.000 description 17
- 239000002994 raw material Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 9
- 239000003086 colorant Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 9
- 239000002657 fibrous material Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 229920002522 Wood fibre Polymers 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000002025 wood fiber Substances 0.000 description 7
- 230000008676 import Effects 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 229940089401 xylon Drugs 0.000 description 5
- 229920002488 Hemicellulose Polymers 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 4
- 238000006062 fragmentation reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 229920000875 Dissolving pulp Polymers 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000007380 fibre production Methods 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- CYQFCXCEBYINGO-UHFFFAOYSA-N THC Natural products C1=C(C)CCC2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3C21 CYQFCXCEBYINGO-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- CYQFCXCEBYINGO-IAGOWNOFSA-N delta1-THC Chemical compound C1=C(C)CC[C@H]2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3[C@@H]21 CYQFCXCEBYINGO-IAGOWNOFSA-N 0.000 description 2
- 229960004242 dronabinol Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- -1 and xylogen Polymers 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004900 laundering Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002983 wood substitute Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses a process for preparing pulp from hemp stems.The process is characterized by including the following steps: firstly, crushing the hemp stems; secondly, impregnating a product obtained in the first step in immersion liquid comprising Na2O2, Na2S2O3, DTPA and water; thirdly, filtering the product obtained in the second step, adding solid obtained after filtration into water for grinding; fourthly, washing the product obtained in the third step with clear water, and screening fibers; fifthly, adding bleaching solution into the fibers obtained in the fourth step, wherein the bleaching solution comprises MgSO4, O3 and water; sixthly, filtering the fibers obtained in the fifth step to obtain the pulp needed in the follow-up process.The process has the advantages that water consumption is low, chlorine-free bleaching is realized, the alkali recovery project is omitted, the resource utilization rate is high, the energy saving and consumption reducing effect is obvious, the pollutant treatment cost is low, meanwhile the environment is protected, the hemp stem fibers are fully utilized, and resource recycling is realized.
Description
Technical field
The application relates to pulping and paper-making, viscose fiber field, particularly relates to a kind of Chinese hemp stalk and produces slurry dregs of rice technique.
Background technology
China is fabric clothing producing country maximum in the world. Viscose fiber is the substitute material of cotton fibre natural materials, account for textile materials about 10% market, there is huge domestic market, the continuous renewal of whole world textiles, garment language feature and demand, stimulate its important source material equally--making constant progress of viscose fiber, and make viscose fiber shine vigorous vitality. China's viscose fiber production capacity accounts for the half of whole world production capacity, the slurry dregs of rice are the raw materials that viscose fiber is produced, the main raw material producing slurry dregs of rice demand is linters, owing to linters price occupies high unstable and cotton planting minimizing, domestic enterprise's import dissolving pulp substitutes linters raw material, and dissolving pulp is that needle-leaved wood fibre manufacture all needs import. And the fast development of China's viscose fiber industry in recent years, the papermaking industry amount that China in 2014 consumes Mierocrystalline cellulose maximum reaches 11,500 ten thousand tons, the pulp material of viscose fiber Production requirement about 3,500,000 tons, and import dissolving pulp is viscose fiber industry main raw material source. At present in American-European countries, viscose fiber has come into high-grade fabric ranks, and be widely used in underwear fabric and summer light and thin fabric making. Viscose fiber function and differential series the continuing to bring out of new variety, not only widened the application space of viscose fiber, also provided infinite commercial opportunities to application industry. Along with the development in science and technology of modern society and the enhancing of people's environmental protection and back to nature consciousness, viscose fiber, with its complete kind, excellent characteristic, is more and more subject to the favor of application industry and consumers in general. Its range of application has expanded to the every field such as clothes, decoration, health care and industry articles for use from conventional industries. While high speed development, also there is comparatively outstanding problem: first in China's viscose fiber industry, high quality raw material breach is big, external dependence degree height, and China's high-quality pulp fibers heavy dependence import, constrains the development of China's viscose fiber industry. China's Forest Resources is few, it does not have sufficient timber resources development pulping and paper-making, pulp fibers industry supply, the xylon of 1/4th of paper industry import Liao Zhan world export availability, self-supporting fiber production wretched insufficiency.
Chinese sinks is hemp, hemp, fire fiber crops, cloud fiber crops etc., and the different call in the area of growth is also different. Annual Sang Ke hemp drafts a document this plant, refer to through artificially breeding, tetrahydrocannabinol (THC) the content < 0.3%(dry matter percentage of plant population florescence top vane and flower fringe), do not possess and extracted drugs and the direct industrial hemp variety type as drugs utility value, plantation is simple, and growth is (80-120 days results) rapidly, are applicable to planting in hillside, wasteland, the lean soil such as saltings. Skin, stalk, seed, root, the leaf of Chinese fiber crops, six major parts are spent all to have extremely high exploitation prospect. First, Chinese fiber crops phloem fiber is that spy spins fiber, and people just fail hemp stalk to be apt to add Appropriate application as waste after extracting phloem fiber. Chinese fiber crops are one of textile fiber materials of using the earliest of the mankind, once have the good reputation of " source is spun by state, 10000 years clothing ancestrals ", and the ancestors showing us in archaeological materials just started domestication before 5000 or six thousand years and utilize Chinese fiber crops. Per mu yield fiber crops bar reaches about 1 ton, and does not need in planting process to use agricultural chemicals and chemical fertilizer; Secondly, Chinese hemp stalk is extremely good wood substitutes, and not only Chinese hemp stalk core can make paper pulp, the slurry dregs of rice, produces high-grade paper, chemistry viscose fiber long filament, and alternative xylon, to reduce the usage quantity of timber. China-hemp fibers cellulose content height, adaptability are relatively strong, cultivation geographic coverage span is relatively big, the speed of growth is fast, output height, and before not adding bleaching, nature whiteness is up to 60%, and the slurry yield of stalk is up to 90%, and material fiber softening, wooden evenly fine and closely woven, being fine pulp fibers material, therefore, discarded Chinese hemp stalk fiber development has well perspective. And existing slurry dregs of rice technique of producing has following shortcoming:
1) environmental pollution is serious, prevention and cure of pollution arduous task
Especially the dregs of rice industry of tradition non-wood fiber slurry falls behind process means and the structure of size and lower technical level, low-level technical equipment, it is resolved that the industrial pollution degree of slurry dregs of rice industry. Tradition is produced slurry dregs of rice technique and is generally taked strong acid, highly basic, high temperature (150 DEG C-185 DEG C), high pressure reach the boiling of a few hours, producing the black liquor being difficult to process, environment is caused severe contamination, especially the high dense black waste liquid in non-wood fiber manufacturing processed is difficult to process especially.
2) resource, energy-output ratio are big
Every ton is starched to dregs of rice comprehensive energy consumption and integrated water consumption, advanced level is every ton of slurry paper comprehensive energy consumption about 0.9 ton mark coal, comprehensive water withdrawal 35--50 ton (xylon slurry), and China is except minority enterprise or part producing line are reached advanced world standards, major part enterprise practical ton slurry comprehensive energy consumption marks coal up to about 1.48 tons, and it is high-order that comprehensive water withdrawal is on average still in about 103 tons.
3) construction investment is big, transformation is difficult
At present, domestic traditional chemistry produce slurry dregs of rice Facilities Construction standard investment situation be: every 10,000 tons of product needed drop into about 100,000,000 yuan. Traditional chemistry produces slurry dregs of rice production line, backward in technique, equipment complexity, long flow path etc., and various fiber produced to starch dregs of rice corporation improvement pressure bigger.
Prior art is not to the slurry dregs of rice production application example of Chinese hemp stalk material, first contrast to be peeled on starting material or to take off the operations such as skin in other wood fiber material, then wood chip it is whittled into, ensure that the qualification rate cutting wood chip is more than 85%, the screened process of going down of defective tablet, then qualified wood chip is loaded high temperature resistant, the container of high pressure also has boiling in strong acid or alkali lye to be about 2-4 hour, produce a large amount of black liquor or red liquid, when boiling terminates to spurt discharging, release has gas with foreign flavor in a large number, also can ferment when can not process in time and produce more serious noxious odor, then extract night, alkali collection engineering, mechanical jordaning, massive laundering is washed, screening, purification is concentrated.
Therefore, it is badly in need of a kind of Chinese hemp stalk and produces slurry dregs of rice technique, it is possible to solve that above-mentioned environmental pollution is big, equipment requirements height, security are low, it is huge to invest, consume energy problem too high, that resource utilization is low.
This technology will be starched the dregs of rice at Chinese hemp stalk and be manufactured in production whole process, realize not high temperature steaming, without black liquor, do not discharge, the cleaning method of element chlorine free bleaching, a Tiao Xin road is created in the utilization of resources for China's agricultural planting by applying of this innovation achievement, the non-fiber or xylon of giving China is utilized and brings huge economic benefit and social benefit.
Summary of the invention
The main purpose of the application is to provide a kind of Chinese hemp stalk to produce slurry dregs of rice technique, with solve existing produce slurry dregs of rice process environments pollute big, equipment requirements height, security low, invest huge, consume energy problem too high, that resource utilization is low.
For solving the problem, this application provides a kind of Chinese hemp stalk and produce slurry dregs of rice technique, it is characterised in that, comprise the following steps:
Step 1: Chinese hemp stalk is broken;
Step 2: flood in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na2O2��Na2S2O3, DTPA, water;
Step 3: the product described step 2 obtained filters, add water grinding by the solid obtained after filtration;
Step 4: the product clear water obtained from described step 3 washs, and will filter out fiber;
Step 5: adding sodium hypochlorite solution in the fiber described step 4 obtained, described sodium hypochlorite solution comprises MgSO4��O3, water;
Step 6: the fiber described step 5 obtained carries out filtering to obtain the slurry dregs of rice that later stage technique needs.
Preferably, step 7 is also comprised: the fiber papermaking described step 4 obtained.
Preferably, step 8 is also comprised: the slurry dregs of rice described step 6 obtained produce viscose fiber or papermaking.
Preferably, the temperature of described Chinese hemp stalk dipping is 40-100 degree Celsius.
Preferably, the temperature of described Chinese hemp stalk dipping is 70-90 degree Celsius.
Preferably, the time of described Chinese hemp stalk dipping is 60-120 minute.
Preferably, described bleaching temperature is 40-100 degree Celsius.
Preferably, described bleaching temperature is 40-70 degree Celsius.
Preferably, described bleaching time is 20-60 minute.
Preferably, it is characterised in that, described Na2O2Massfraction be 2.5-4.5%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.1-0.8%, surplus be water.
Preferably, described Na2O2Massfraction be 3-4%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.3-0.6%, surplus be water.
Preferably, described Na2O2Massfraction be 3.5%, Na2S2O3Massfraction be 2%, the massfraction of DTPA be 0.6%, surplus be water.
Preferably, described MgSO4Massfraction be 0.08-0.15%, O3Massfraction be 2-5%, surplus be water.
Preferably, described MgSO4Massfraction be 0.13%, O3Massfraction be 3%, surplus be water.
Compared with prior art, a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, reaches following effect:
1) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, with water not draining, it is achieved whole process is pollution-free, it is possible to greatly reduce the pollutant emission even substantially stopping in paper technology, also protects environment while Pollutant Treatment cost is little;
2) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, resource utilization height, energy conservation and consumption reduction effects carbon industry obvious, low;
3) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, makes full use of Chinese hemp stalk fiber, it is achieved resource circulation utilization, and novel process can make full use of Chinese hemp stalk fiber as raw material, can save again a large amount of forest timber resource.
4) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, reduces cost of investment, shortens the construction period, and novel technique has that high in technological content, input-output ratio height, construction period be short, the advantage of investment instant effect.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, forms the part of the application, and the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application. In the accompanying drawings:
Fig. 1 is the schema that in the application, Chinese hemp stalk produces slurry dregs of rice technique.
Embodiment
As employed some vocabulary in the middle of specification sheets and claim to censure specific components. Those skilled in the art should it will be appreciated that hardware manufacturer may call same assembly with different noun. This specification and claims are not used as distinguishing in the way of assembly by the difference of title, but are used as the criterion distinguished with assembly difference functionally. Specification sheets subsequent descriptions is implement the better embodiment of the application, and right described description is to illustrate for the purpose of the general principle of the application, it does not mean to limit the scope of the application. The protection domain of the application is when being as the criterion depending on the claims person of being defined. Certainly, the slurry dregs of rice technique of producing described in the present invention not only can be used on Chinese hemp stalk this kind of raw material, it may also be useful to technique of the present invention also should belong to protection scope of the present invention on the raw material that characteristic is similar to Chinese hemp stalk.
As Chinese hemp stalk in Fig. 1 the application is produced shown in the schema starching dregs of rice technique, a kind of Chinese hemp stalk produces slurry dregs of rice technique, comprises the following steps:
Step 1: Chinese hemp stalk is broken;
Step 2: flood in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na2O2��Na2S2O3, DTPA, water;
Step 3: the product described step 2 obtained filters, add water grinding by the solid obtained after filtration;
Step 4: the product clear water obtained from described step 3 washs, and will filter out fiber;
Step 5: adding sodium hypochlorite solution in the fiber described step 4 obtained, described sodium hypochlorite solution comprises MgSO4��O3, water;
Step 6: the fiber described step 5 obtained carries out filtering to obtain the slurry dregs of rice that later stage technique needs.
Preferably, step 7 is also comprised: the fiber papermaking described step 4 obtained.
Preferably, step 8 is also comprised: the slurry dregs of rice described step 6 obtained produce viscose fiber or papermaking.
By broken for Chinese hemp stalk or chip; Ready Chinese hemp stalk raw material is delivered to crusher and carries out fragmentation, before entering next step, can preferably be undertaken Chinese hemp stalk fragment screening, dedusting, impurity, dust are removed.
The product that described step 1 obtains is flooded in immersion liquid, can flood in immersion liquid under with no pressure or normal pressure, comprising of described immersion liquid: Na2O2��Na2S2O3, DTPA, water; The temperature of dipping is 70-90 degree Celsius, is the temperature that generic container can be born, the lignin of the Chinese hemp stalk sheet part after dip treating and hemicellulose modification, and Chinese hemp stalk sheet permeate, softening and energy sub-wire;
The product described step 2 obtained filters, by Chinese hemp stalk mill slurry; Being filtered by Chinese hemp stalk sheet, described immersion liquid can carry out repetition regeneration, and described Chinese hemp stalk sheet carries out machinery sub-wire mill slurry;
The product washing and screening that described step 3 is obtained, owing to slurry also having metal in mechanical flow send, in grinding of the fibrous bundle of non-grinding or fibrous material, the grains of sand etc., by screening this road technological operation of purification, remove impurity and robust fibre, deviate to residue in the immersion liquid in slurry; Screening refers to the product described step 3 obtained with the sieved filter of fiber, the Production requirement of the fiber pulp according to different size, length, the order number of fiber sieve, the size of sieve aperture are set, required thickness, the fiber of size can be extracted flexibly by screening process; Because fiber crops bar sheet immersion liquid was soaked, after extracting immersion liquid, hemp stalk tablet can not affect the operation of quality product and operation below containing a small amount of remaining immersion liquid, through grinding the fiber pulp of gained, washing, purifying screens, and the length and width thickness standard of comparison of the fiber pulp sifted out with sieve and unification, the slurry therefore filtered out with sieve is put in clear water, separates namely the product of step for this reason. The fiber taken away in water remaining after the water of washing and screen fibre pulp, can increase screen cloth according to demand and continue filtered and recycled fiber, obtain thinner fiber pulp, and after filtering, remaining water cycle uses.
The product separation that described step 4 obtains being obtained fiber pulp, is undertaken being separated by described fiber pulp and washing water and namely obtain primary colors essence fiber pulp, washing water can reclaiming cyclically utilizing; Described separation method includes but not limited to thickner vacuum filtration, standing separation etc.;
Adding sodium hypochlorite solution in the fiber pulp described step 5 obtained, described sodium hypochlorite solution comprises MgSO4��O3, water; Bleach, determine that the whiteness floated can at 75-90%ISO according to demand voluntarily;
Described fiber bleached carrying out filtering to obtain the slurry dregs of rice that later stage technique needs, its mode filtered and the moisture controlled of filtration can be determined by the needs of later stage technique.
The temperature of described Chinese hemp stalk dipping is 40-100 degree Celsius.
Preferably, the temperature of described Chinese hemp stalk dipping is 70-90 degree Celsius.
The time of described Chinese hemp stalk dipping is 60-90 minute.
Described bleaching temperature is 40-100 degree Celsius.
Preferably, described bleaching temperature is 40-70 degree Celsius.
Described bleaching time is 20-60 minute.
Described Na2O2Massfraction be 2.5-4.5%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.1-0.8%, surplus be water.
Preferably, described Na2O2Massfraction be 3-4%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.3-0.6%, surplus be water.
Preferably, described Na2O2Massfraction be 3.5%, Na2S2O3Massfraction be 2%, the massfraction of DTPA be 0.6%, surplus be water.
Described MgSO4Massfraction be 0.08-0.15%, O3Massfraction be 2-5%, surplus be water.
Preferably, described MgSO4Massfraction be 0.13%, O3Massfraction be 3%, surplus be water.
Chinese hemp stalk provided by the invention produces slurry dregs of rice technique, water cycle regeneration reuse is not discharged, realize whole process pollution-free, it is utilize highly basic, strong acid, high temperature, steaming and decocting under high pressure that tradition produces slurry dregs of rice technique, produces difficult black liquor, environment causes serious impact, especially the black liquor in non-wood fiber manufacturing processed is difficult to process especially, meanwhile, also the black liquor produced being implemented alkali collection, its engineering puts into operation and bears huge working cost; And the production of Chinese hemp stalk fiber cleaning is that fiber is flooded and softens by immersion liquid at ambient pressure, do not use highly basic and strong acid, so there is no black liquor produce, achloride bleaching Halogen compound AOX produces, the great number cost with operational management is dropped into, it is not necessary to the heavy burden that huge terminal engineering of water treatment consumption brings without the need to huge alkali collection engineering.
Meanwhile, waste liquid or waste water in the discharge of all different production workshop sections are through different fractional regeneration cyclically utilizing, decrease consuming and the waste of discharge water resources, protect environment.
Chinese hemp stalk provided by the invention produces slurry dregs of rice technique, resource utilization height, and energy conservation and consumption reduction effects is obvious, and fiber comprehensively obtains rate up to 70-90%, within every ton of fiber pulp obtained only consumption 10 tons, water, water saving 90%, comprehensive energy consumption 394.55kg marks coal, save energy and reduce the cost compared with tradition other technology of non-wood fiber very remarkable, announce one-level comprehensive energy consumption standard 950kg lower than national environmental protection industry standard " clean production standard paper industry (bleached chemical soda processes Straw Pulp production technique) " HJ/T339-2007 and mark coal, and National Development and Reform Commission, environment protection portion, industry and informationization portion No. 33 bulletin " cleaner production apprasement index system establishment general rule " (tentative original text)--the non-wood pulp evaluation index project of bleached chemical in table 4 in 2013, weight and benchmark value " Straw Pulp " index.
Chinese hemp stalk provided by the invention produces slurry dregs of rice technique, the fibrous material discarded after making full use of agricultural planting roughing, realize resource circulation utilization, meet recycling economy, novel process can make full use of waste fiber as raw material, replace xylon with non-wood fiber, a large amount of forest timber resource can be saved again.
Chinese hemp stalk, belongs to medium staple fibre broad-leaved wood fiber paper pulp category. Chinese fiber crops are the peculiar agricultural planting cash crop of China, will become the alternative industry of poor efficiency agricultural. After effective utilization of phloem fiber hemp stalk comprehensive utilization produce pulp fibers, both can production artificial regeneration fiber, alternative fossil fiber, it is also possible to produce senior machine-made paper. Especially in the papermaking most ecosystem of primary colors fiber, comprising: primary colors food wrapper, primary colors house paper for daily use etc., have market economy more widely and be worth and competition potential.
Chinese hemp stalk provided by the invention produces slurry dregs of rice technique, can implement serialization scale production, can significantly reduce cost of investment, shortens the construction period, and novel technique has that high in technological content, input-output ratio height, construction period be short, the advantage of investment instant effect. Newly-built annual output 100000 tons of pulp fibers production lines are equivalent to tradition investment 30%.
If producing production line for the slurry dregs of rice to carry out expanding, reconstructing, adopting the construction period of this novel process production line to be only half a year, taking effect fast especially. Investment is just recoverable within the short period of 2 years.
Embodiment one
A kind of Chinese hemp stalk produces slurry dregs of rice technique, comprising:
(1) by broken for Chinese hemp stalk or chip; Ready Chinese hemp stalk raw material is delivered to crusher, before entering next step, is undertaken Chinese hemp stalk fragment screening, dedusting, impurity, dust are gone out.
(2) normal pressure floods in immersion liquid, comprising of described immersion liquid: Na2O2��Na2S2O3, DTPA, water; The temperature of dipping is 70-90 degree Celsius, dipping time is 60-90 minute, Chinese hemp stalk sheet stripping after dip treating pectin, and xylogen, hemicellulose are played modifying function, raw material is improved yield and has significance, and Chinese hemp stalk sheet can be made by rapid osmotic, softening, reach sub-wire object.
(3) filtering, described immersion liquid can regenerate to reuse, and described Chinese hemp stalk sheet is carried out mechanical jordaning.
(4) washing and screening, owing to slurry also having the fibrous bundle of non-grinding or fibrous material send at mechanical flow, metal in grinding, the grains of sand etc., by screening this road technological operation of purification, reach raising fiber quality, remove impurity and thick fiber, clean the immersion liquid residuing in slurry, reach the primary colors fiber pulp of meticulous standard.
Primary colors fiber pulp is separated with water liquid and obtains solid fiber slurry, described fiber pulp is separated with washing water, and washing water can reclaiming cyclically utilizing.
(5) adding sodium hypochlorite solution, described sodium hypochlorite solution comprises MgSO4��O3, water; Bleach, bleaching temperature 40-70 degree Celsius, bleaching time 20-60 minute, determine whiteness fiber pulp floated according to demand voluntarily, generally can at 75-90%ISO;
(6) thickening, obtains meeting the slurry dregs of rice of variant production whiteness requirement.
The Chinese hemp stalk provided by above-described embodiment one produce slurry dregs of rice technique, slurry yield, land area, investment cost and ton starch into present aspect with tradition alkali legal system get slurry the dregs of rice contrast table as shown in table 1 below:
Table 1 Chinese hemp stalk produces slurry dregs of rice technological effect
| Contrast project | Traditional technology | This Technology | Advantage |
| Slurry yield | 40% | 70--80% | Improve 42-50% |
| Land area | 600 mu | 300 mu | Save 50% |
| Investment cost | 1000000000 | 3-4 hundred million | Save more than 70% |
| Ton slurry cost | 4000 yuan/ton | 2600 yuan/ton | Save cost 35%, reduce by 1400 yuan |
In addition, as shown in table 2, difference produces slurry dregs of rice technique pollutant emission situation contrast, compares by discharging standards GB3544-2008.
Table 2 Chinese hemp stalk produces slurry dregs of rice technique pollutant emission situation
| Project | Chinese hemp stalk produces slurry dregs of rice technique | Tradition acid-base method is produced |
| Ton pulp waste water quantity discharged (m3/ t) | 0 | 80 |
| Ton slurry CODcr quantity discharged (kg/t) | 0 | 16 |
| Ton slurry BOD5Quantity discharged (kg/t) | 0 | 4 |
| Ton slurry SS quantity discharged (kg/t) | 0 | 5.6 |
As shown above, the Chinese hemp stalk adopting the present embodiment to provide produces slurry dregs of rice technique, produces 100000 tons of Chinese hemp stalks and starches dregs of rice engineerings, can reduce discharging waste water year and amount of pollutant is:
Year reduces quantity of wastewater effluent: 100000*80(ton)=8,000,000 tons;
Year reduces CODcrQuantity discharged: 100000*0.016(ton)=1600 tons;
Year reduces BOD5Quantity discharged: 100000*0.004(ton)=400 tons;
Year reduces SS quantity discharged: 100000*0.0056(ton)=560 tons;
Therefore, the Chinese hemp stalk adopting the present embodiment to provide produces slurry dregs of rice technique, it is possible to greatly reduce the pollutant emission even substantially stopping to starch in dregs of rice technique.
In the energy, resources conservation, the present embodiment provide Chinese hemp stalk produce slurry dregs of rice technique in fibres extraction process not high temperature steaming, do not pressurize, without the need to the alkali collection facility equipment investment of complexity, complete to produce at ambient pressure, be conducive to falling low power consumption, coal consumption, water consumption, there is significant energy-saving effect; Utilize cyclic regeneration reuse water system in addition, greatly reduce the water loss of ton product, and reach and do not discharge. Originally comprehensive energy consumption, the resource consumption situation of producing slurry dregs of rice technology are as shown in table 3, and it is as shown in table 4 that China's tradition alkali legal system gets comprehensive energy consumption situation in slurry dregs of rice technological process:
Table 3 Chinese hemp stalk produces slurry dregs of rice process synthesis energy consumption situation
| Sequence number | The energy | Signature coal/kg | Ton pulp fibers energy consumption (signature coal)/kg |
| 1 | Water | 0.257 | 10m3/t��0.257kg/m3=2.57kg |
| 2 | Electricity | 0.404 | 536kw��h/t��0.404/kw��h =216.54kg |
| 3 | Vapour | 129 | 1.36t/t �� 129 kg/t=175.44kg |
| 4 | Ton slurry comprehensive energy consumption | 2.57kg+216.54kg+175.44kg=394.55kg | |
| 5 | Fibrous material consumption amount | 1.3-1.5 ton |
Table 4 tradition produces comprehensive energy consumption situation in slurry dregs of rice technological process
| Sequence number | The energy | Signature coal/kg | Ton pulp fibers energy consumption (signature coal)/kg |
| 1 | Water | 0.257 | 100m3/t��0.257kg/m3=25.7kg |
| 2 | Electricity | 0.404 | 1170kw��h/t��0.404kg/ kw��h=472.68kg |
| 3 | Vapour | 129 | 3.7t/t��129kg/t=477.3kg |
| 4 | Ton slurry comprehensive energy consumption | 25.7kg+472.68kg+477.3kg=975.68kg | |
| 5 | Fibrous material consumption amount | 2.5-3 ton |
Consolidated statement 3, table 4 carry out contrasting (to produce 100000 tons of slurry dregs of rice production lines per year), and the Chinese hemp stalk that the present embodiment provides produces slurry dregs of rice technique:
Year comprehensive energy consumption, amount of energy saving is:
100000 tons/year �� (975.68kg/ ton 394.55kg/ ton)=58113 tons/year of mark coals;
Year saves fibrous material resource:
100000 tons/year �� (2.5 ton/ton 1.5 ton/ton)=100,000 tons/year;
Wherein, saving clear water amount year is:
100000 tons/year �� (100 ton/ton 10 ton/ton)=90,000 tons/year.
Embodiment two
Preferably, step 7 is also comprised: the fiber papermaking described step 4 obtained.
(1) step 1: by broken for Chinese hemp stalk or chip; Ready Chinese hemp stalk raw material is delivered to crusher and carries out fragmentation, before entering next step, can preferably be undertaken Chinese hemp stalk fragment screening, dedusting, impurity, dust are removed.
(2) product that described step 1 obtains is flooded in immersion liquid, can flood in immersion liquid under with no pressure or normal pressure, comprising of described immersion liquid: Na2O2��Na2S2O3, DTPA, water; The temperature of dipping is 70-90 degree Celsius, is the temperature that generic container can be born, the lignin of the Chinese hemp stalk sheet part after dip treating and hemicellulose modification, and Chinese hemp stalk sheet permeate, softening and energy sub-wire;
(3) product described step 2 obtained filters, by Chinese hemp stalk mill slurry; Being filtered by Chinese hemp stalk sheet, described immersion liquid can carry out repetition regeneration, and described Chinese hemp stalk sheet carries out machinery sub-wire mill slurry;
(4) the product washing and screening described step 3 obtained, owing to slurry also having metal in mechanical flow send, in grinding of the fibrous bundle of non-grinding or fibrous material, the grains of sand etc., by screening this road technological operation of purification, remove impurity and robust fibre, deviate to residue in the immersion liquid in slurry; Screening refers to the product described step 3 obtained with the sieved filter of fiber, the Production requirement of the fiber pulp according to different size, length, the order number of fiber sieve, the size of sieve aperture are set, required thickness, the fiber of size can be extracted flexibly by screening process; Because fiber crops bar sheet immersion liquid was soaked, after extracting immersion liquid, hemp stalk tablet can not affect the operation of quality product and operation below containing a small amount of remaining immersion liquid, through grinding the fiber pulp of gained, washing, purifying screens, and the length and width thickness standard of comparison of the fiber pulp sifted out with sieve and unification, the slurry therefore filtered out with sieve is put in clear water, separates namely the product of step for this reason. The fiber taken away in water remaining after the water of washing and screen fibre pulp, can increase screen cloth according to demand and continue filtered and recycled fiber, obtain thinner fiber pulp, and after filtering, remaining water cycle uses;
The product separation that described step 4 obtains being obtained fiber pulp, is undertaken being separated by described fiber pulp and washing water and namely obtain primary colors essence fiber pulp, washing water can reclaiming cyclically utilizing; Described separation method includes but not limited to thickner vacuum filtration, standing separation etc.
Described primary colors fiber pulp can be used for manufacturing unbleached paper.
The temperature of described Chinese hemp stalk dipping is 40-100 degree Celsius.
Preferably, the temperature of described Chinese hemp stalk dipping is 70-90 degree Celsius.
The time of described Chinese hemp stalk dipping is 60-90 minute.
Described Na2O2Massfraction be 2.5-4.5%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.1-0.8%, surplus be water.
Preferably, described Na2O2Massfraction be 3-4%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.3-0.6%, surplus be water.
Preferably, described Na2O2Massfraction be 3.5%, Na2S2O3Massfraction be 2%, the massfraction of DTPA be 0.6%, surplus be water.
Embodiment three
Preferably, step 8 is also comprised: the slurry dregs of rice described step 6 obtained produce viscose fiber or papermaking.
(1) step 1 by the fragmentation of Chinese hemp stalk or is chipped; Ready Chinese hemp stalk raw material is delivered to crusher and carries out fragmentation, before entering next step, can preferably be undertaken Chinese hemp stalk fragment screening, dedusting, impurity, dust are removed.
(2) product that described step 1 obtains is flooded in immersion liquid, can flood in immersion liquid under with no pressure or normal pressure, comprising of described immersion liquid: Na2O2��Na2S2O3, DTPA, water; The temperature of dipping is 70-90 degree Celsius, is the temperature that generic container can be born, the lignin of the Chinese hemp stalk sheet part after dip treating and hemicellulose modification, and Chinese hemp stalk sheet permeate, softening and energy sub-wire;
(3) product described step 2 obtained filters, by Chinese hemp stalk mill slurry; Being filtered by Chinese hemp stalk sheet, described immersion liquid can carry out repetition regeneration, and described Chinese hemp stalk sheet carries out machinery sub-wire mill slurry;
(4) the product washing and screening described step 3 obtained, owing to slurry also having metal in mechanical flow send, in grinding of the fibrous bundle of non-grinding or fibrous material, the grains of sand etc., by screening this road technological operation of purification, remove impurity and robust fibre, deviate to residue in the immersion liquid in slurry; Screening refers to the product described step 3 obtained with the sieved filter of fiber, the Production requirement of the fiber pulp according to different size, length, the order number of fiber sieve, the size of sieve aperture are set, required thickness, the fiber of size can be extracted flexibly by screening process; Because fiber crops bar sheet immersion liquid was soaked, after extracting immersion liquid, hemp stalk tablet can not affect the operation of quality product and operation below containing a small amount of remaining immersion liquid, through grinding the fiber pulp of gained, washing, purifying screens, and the length and width thickness standard of comparison of the fiber pulp sifted out with sieve and unification, the slurry therefore filtered out with sieve is put in clear water, separates namely the product of step for this reason. The fiber taken away in water remaining after the water of washing and screen fibre pulp, can increase screen cloth according to demand and continue filtered and recycled fiber, obtain thinner fiber pulp, and after filtering, remaining water cycle uses.
The product separation that described step 4 obtains being obtained fiber pulp, is undertaken being separated by described fiber pulp and washing water and namely obtain primary colors essence fiber pulp, washing water can reclaiming cyclically utilizing; Described separation method includes but not limited to thickner vacuum filtration, standing separation etc.;
(5) adding sodium hypochlorite solution in the fiber pulp described step 4 obtained, described sodium hypochlorite solution comprises MgSO4��O3, water; Bleach, determine that the whiteness floated can at 75-90%ISO according to demand voluntarily;
(6) described fiber bleached carry out filtering in case obtain the later stage technique need the slurry dregs of rice.
The slurry dregs of rice can be used for next step and produce viscose fiber, or papermaking.
The temperature of described Chinese hemp stalk dipping is 40-100 degree Celsius.
Preferably, the temperature of described Chinese hemp stalk dipping is 70-90 degree Celsius.
The time of described Chinese hemp stalk dipping is 60-90 minute.
Described bleaching temperature is 40-100 degree Celsius.
Preferably, described bleaching temperature is 40-70 degree Celsius.
Described bleaching time is 20-60 minute.
Described Na2O2Massfraction be 2.5-4.5%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.1-0.8%, surplus be water.
Preferably, described Na2O2Massfraction be 3-4%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.3-0.6%, surplus be water.
Preferably, described Na2O2Massfraction be 3.5%, Na2S2O3Massfraction be 2%, the massfraction of DTPA be 0.6%, surplus be water.
Described MgSO4Massfraction be 0.08-0.15%, O3Massfraction be 2-5%, surplus be water.
Preferably, described MgSO4Massfraction be 0.13%, O3Massfraction be 3%, surplus be water.
Compared with prior art, a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, reaches following effect:
1) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, with water not draining, it is achieved whole process is pollution-free, it is possible to greatly reduce the pollutant emission even substantially stopping in paper technology, also protects environment while Pollutant Treatment cost is little;
2) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, resource utilization height, energy conservation and consumption reduction effects carbon industry obvious, low;
3) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, makes full use of Chinese hemp stalk fiber, it is achieved resource circulation utilization, and novel process can make full use of Chinese hemp stalk fiber as raw material, can save again a large amount of forest timber resource.
4) a kind of Chinese hemp stalk described in the application produces slurry dregs of rice technique, reduces cost of investment, shortens the construction period, and novel technique has that high in technological content, input-output ratio height, construction period be short, the advantage of investment instant effect.
The foregoing is only the embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations. Within all spirit in the application and principle, any amendment of doing, equivalent replacement, improvement etc., all should be included within the right of the application.
Claims (10)
1. a Chinese hemp stalk produces slurry dregs of rice technique, it is characterised in that, comprise the following steps:
Step 1: Chinese hemp stalk is broken;
Step 2: flood in immersion liquid by the product that described step 1 obtains, described immersion liquid comprises Na2O2��Na2S2O3, DTPA, water;
Step 3: the product described step 2 obtained filters, add water grinding by the solid obtained after filtration;
Step 4: the product clear water obtained from described step 3 washs, and will filter out fiber;
Step 5: adding sodium hypochlorite solution in the fiber described step 4 obtained, described sodium hypochlorite solution comprises MgSO4��O3, water;
Step 6: the fiber described step 5 obtained carries out filtering to obtain the slurry dregs of rice that later stage technique needs.
2. Chinese hemp stalk as claimed in claim 1 produces slurry dregs of rice technique, it is characterised in that, in described step 2, the temperature of Chinese hemp stalk dipping is 40-100 degree Celsius.
3. Chinese hemp stalk as claimed in claim 1 produces slurry dregs of rice technique, it is characterised in that, in described step 2, the temperature of Chinese hemp stalk dipping is 70-90 degree Celsius.
4. Chinese hemp stalk as claimed in claim 1 produces slurry dregs of rice technique, it is characterised in that, in described step 2, the time of Chinese hemp stalk dipping is 60-120 minute.
5. as the Chinese hemp stalk as described in arbitrary in claim 4 produces slurry dregs of rice technique, it is characterised in that, in described immersion liquid, Na2O2Massfraction be 2.5-4.5%, Na2S2O3Massfraction be the massfraction of 1%-3%, DTPA be 0.1-0.8%, surplus is water.
6. Chinese hemp stalk as claimed in claim 7 produces slurry dregs of rice technique, it is characterised in that, in described immersion liquid, Na2O2Massfraction be 3-4%, Na2S2O3Massfraction to be the massfraction of 1%-3%, DTPA be 0.3-0.6%, surplus be water.
7. Chinese hemp stalk as claimed in claim 7 produces slurry dregs of rice technique, it is characterised in that, in described immersion liquid, Na2O2Massfraction be 3.5%, Na2S2O3Massfraction be 2%, the massfraction of DTPA be 0.6%, surplus be water.
8. Chinese hemp stalk as claimed in claim 6 produces slurry dregs of rice technique, it is characterised in that, in described drift liquid, MgSO4Massfraction be 0.08-0.15%, O3Massfraction be 2-5%, surplus be water.
9. Chinese hemp stalk as claimed in claim 6 produces slurry dregs of rice technique, it is characterised in that, in described drift liquid, MgSO4Massfraction be 0.13%, O3Massfraction be 3%, surplus be water.
10. use such as the Chinese hemp stalk as described in arbitrary in claim 1-9 is produced the paper technology of slurry dregs of rice technique, is produced viscose fiber technique, it is characterized in that, also comprise step 7: the fiber papermaking described step 4 obtained, also comprise step 8: the slurry dregs of rice described step 6 obtained produce viscose fiber or papermaking.
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| CN112522982A (en) * | 2020-03-18 | 2021-03-19 | 欣龙控股（集团）股份有限公司 | Hemp antibacterial material and production method and application thereof |
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