CN101787315B - Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks - Google Patents
Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks Download PDFInfo
- Publication number
- CN101787315B CN101787315B CN 201010107878 CN201010107878A CN101787315B CN 101787315 B CN101787315 B CN 101787315B CN 201010107878 CN201010107878 CN 201010107878 CN 201010107878 A CN201010107878 A CN 201010107878A CN 101787315 B CN101787315 B CN 101787315B
- Authority
- CN
- China
- Prior art keywords
- cotton stalk
- core
- moulding
- forming
- stalk core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920000742 Cotton Polymers 0.000 title claims abstract description 274
- 239000000446 fuel Substances 0.000 title claims abstract description 76
- 239000002028 Biomass Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000006835 compression Effects 0.000 title claims abstract description 39
- 238000007906 compression Methods 0.000 title claims abstract description 39
- 238000000465 moulding Methods 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000010298 pulverizing process Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 8
- 239000004753 textile Substances 0.000 claims description 7
- 240000000249 Morus alba Species 0.000 claims description 4
- 235000008708 Morus alba Nutrition 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 239000000047 product Substances 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000006227 byproduct Substances 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
- 241000219146 Gossypium Species 0.000 description 220
- 239000010902 straw Substances 0.000 description 13
- 239000000123 paper Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 235000012343 cottonseed oil Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- 241000124033 Salix Species 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention belongs to the technical field of biomass fuel and preparation thereof, and particularly discloses cotton stalk core biomass compression fuel. In the fuel, the cotton stalk core content is 85 to 90 percent, the compressed density of the fuel is 1,100 to 1,400kg/m<3>, the relaxed density is 700 to 900kg/m<3>, and the water content is 8 to 12 percent. The preparation method comprises the following steps of: using the cotton stalks, of which the water content is below 12 percent, as a raw material; performing separating treatment by a cotton stalk skin-core separating machine; crushing the separated cotton stalk cores; molding the cotton stalk cores by compression under a pressure of 70 to 100MPa; and performing cooling and packaging to obtain the finished products, wherein the byproducts of cotton stalk skin obtained by separation can also be used for spinning and paper-making, so that the comprehensive utilization of the cotton stalks is realized. The cotton stalk core biomass compression fuel has the advantages of high heat efficiency, low ash content, little pollution, no damage to a boiler, convenient transportation and storage and the like; and the process method has the advantages of high process efficiency, low equipment cost, low production cost, good product quality and the like.
Description
Technical field
The present invention relates to the method for comprehensive utilization of a kind of solid fuel and preparation and a plant material, relate in particular to the method for comprehensive utilization of a kind of solid fuel based on plant material and preparation and a kind of agricultural crop straw.
Background technology
Cotton is annual half xylophyta.Cotton stalk (hereinafter to be referred as cotton stalk) refers to remove the cotton stalk of leaf, root and cotton boll.Cotton stalk is made of cotton stalk skin and cotton stalk core two portions, and wherein cotton stalk skin accounts for 25%, and cotton stalk core accounts for 75%.From the biomass technical analysis of cotton stalk, moisture 6.87%, ash content 3.97%, volatile matter 68.54%, fixed carbon 20.71%.Many (be 13.86% such as the straw, wheat straw is 8.9%) that other agricultural crop straws of ash rate of cotton stalk are low, the ash content of cotton stalk and the willow of broad-leaf forest approach, and the heat that ash content produces at least is many, the temperature height of burning.The fixed carbon of cotton stalk is 20.71%, exceeds other agricultural crop straw, even is higher than the timber such as poplar, willow, pine, and the high more anti-burning of biomass of fixed carbon content, calorific value is higher.The volatile matter of cotton stalk is similar with other agricultural crop straws.From the chemical property of cotton stalk, under the natural air drying state, its superior calorific value 17.37MJ/kg, Lower heat value is 15.99MJ/kg, also is higher than other agricultural crop straws.From the physical properties of cotton stalk, its bulk density is 63kg/m
3, higher than other agricultural crop straws.The physical strength of cotton stalk, the thermal conductivity of cotton stalk all are higher than other agricultural crop straws.From above analysis as seen, cotton stalk is compared with other agricultural crop straws, is a kind of preferably biomass fuel.
At present for cotton stalk in the utilization of biomass energy, mainly be that it is pulverized fuel as Industrial Boiler, as utilize the direct combustion power generation of cotton stalk, heating etc.Because cotton stalk in constructional feature, directly uses as boiler oil, has following problems: first, cotton stalk is the same with other agricultural crop straws, and density is little, volume is large, brings many difficulties to its collection, transportation, storage, high such as transportation cost, to store and take up an area greatly, fire protection expense is large; The second, require higher to boiler plant; Cotton stalk is the same with other agricultural crop straws, and moisture and volatile matter are higher, and calorific value, ash content fusing point are lower, and ash content can cohere into the large clinker that is difficult to eliminate after at high temperature becoming molten state, and alkali metal content is higher in the while stalk, easily boiler is caused corrosion; The 3rd, because cotton stalk equally has the low defective of calorific value with other stalks, improve the capacity that thermo-efficiency then must add cauldron, while fuel delivery system complex structure, technical requirements is high, and China's existing macro-organism matter generating set all needs import, and price is relatively costly, this also causes, and China is existing directly to be pulverized the enterprise that makes fuel power generation function with cotton stalk and mostly is in lossing state, its reason just because of the initial stage of founding the factory have high input, generatine set heat efficiency is low, fuel cost is high; The 4th, the direct pulverizing of cotton stalk made fuel, do not take into full account different characteristics and the function of cotton stalk different sites, unrealized making the best use of everything especially fallen this valuable industrial production material combusting of cotton stalk skin, wasted resource; The 5th, because the existence of cotton stalk skin phloem fiber in the cotton stalk, this also so that cotton stalk is pulverized comparatively difficulty, is difficult to compressed moulding.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide that a kind of thermo-efficiency is high, ash content is few, pollute less, cost is low, little and be convenient to the cotton stalk core biomass compression fuel that transports and store to the boiler infringement, the corresponding preparation method that a kind of process efficiency height, good product quality, production cost is low, equipment investment is little cotton stalk core biomass compression fuel are provided also also provides a kind of energy-saving and emission-reduction, can greatly improve the method for comprehensive utilization of the cotton stalk of waste resource comprehensive utilization ratio.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of cotton stalk core biomass compression fuel, it is characterized in that: cotton stalk core content is 85%～90% in the described biomass compression fuel, the length of described cotton stalk core is below 5mm, and the pressed density of described biomass compression fuel is 1100～1400kg/m
3, the relaxed density of described biomass compression fuel is 700～900kg/m
3The water ratio of described biomass compression fuel is 8%～12%.
As a total technical conceive, the present invention also provides a kind of preparation method of cotton stalk core biomass compression fuel, may further comprise the steps: take water ratio at the cotton stalk below 12% as raw material, adopt the cotton stalk skin-core separating machine that cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment (the skin-corn separation rate generally will reach more than 90%), the cotton stalk core of the particle shape that obtains after separating is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100MPa, cool off after the compressed moulding, packing (generally being cooled to get final product below 30 ℃) obtains being convenient to the cotton stalk core biomass compression fuel of storing and transporting.
As a total technical conceive, the present invention also provides a kind of method of comprehensive utilization of cotton stalk, may further comprise the steps: take water ratio at the cotton stalk below 12% as raw material, adopt the cotton stalk skin-core separating machine that cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment (the skin-corn separation rate generally will reach more than 90%), obtain the cotton stalk core of particle shape and banded cotton stalk skin (the pure rate of cotton stalk core generally also will reach more than 90%) after the separation; To carry out follow-up degumming process after the described cotton stalk skin arrangement, the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is as the raw material of textile industry, and the cotton stalk mulberry paper slurry after the processing is as the paper raw material; Simultaneously described cotton stalk core is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100MPa, cool off, pack (generally being cooled to get final product below 30 ℃) after the compressed moulding, obtain being convenient to the cotton stalk core biomass compression fuel of storing and transporting.
The proposition of above-mentioned each technical scheme be take us for a long time to the research of cotton stalk structure and composition as the basis.Cotton stalk can obtain cotton stalk skin and cotton stalk core after processing through appropriate separation.Cotton stalk skin cellulose 42.2%, hemicellulose 18.11%, xylogen 18.95%, mean fibre length 2.26mm, long-width ratio is 113, wall chamber ratio is 2.7, flexibility factor is 20.9, as seen the cotton stalk skin pulp production raw material that is in fact a kind of high-quality, the cotton stalk mulberry paper slurry after the processing can be used for producing the products such as kraft paper, jute paper, cardboard.Cotton stalk skin generates cotton stalk hide fiber after coming unstuck, the physical and mechanical properties index of cotton stalk hide fiber is: fiber fineness 1.86tex, breaking tenacity 42.53CN/tex, elongation at break 4.18%, standard moisture regain 9.68%.As seen, cotton stalk hide fiber is a kind of phloem fiber, and the characteristic that it has bast-fibre is a kind of textile raw material of high-quality.The content of lignin higher (being 21.19%) of cotton stalk core, it is conducive to the splicing between the shaped fuel particle, improves the cohesive strength of forming blocks; And the ash content of cotton stalk core is 1.56%, is lower than cotton stalk skin (about 5.32%), and thermo-efficiency is higher; Do not contain cured matter in the cotton stalk core simultaneously, do not contain basic metal, this has all reduced the erosion of fuel to boiler systems.Therefore, the present invention has taken into full account structural constituent and the characteristics thereof of cotton stalk, and reclaim, fully utilize, turn waste into wealth in the classification that has truly realized cotton stalk, greatly improved the added value of cotton stalk, this has also overcome for a long time people directly makes cotton stalk as a wholely to pulverize, reclaims, utilizes all drawbacks that occur, and has greatly improved the comprehensive utilization ratio of agricultural straw resource.
Cotton stalk skin-core separating machine in the technique scheme preferably adopts disclosed cotton stalk skin-core separating machine in the CN200996061Y Chinese patent literature, its mechanize that not only can successfully realize cotton stalk skin and cotton stalk core separates, and can guarantee better the pure rate of separation rate and the product of cotton stalk skin-core.Consider that the processing request that cotton stalk skin-core separates reaches later separation product quality requirements, we require the water content requirement of cotton stalk raw material below 12%, can be with the direct natural air drying of cotton stalk to this water ratio at Arid Area, other areas can adopt ordinary method that cotton stalk is carried out drying treatment.Generally isometric through cotton stalk skin and cotton stalk after the cotton stalk skin-core separation, be about 40～60cm, and become straight band shape, and the cotton stalk core after separating becomes the particle shape, length is about 5～30mm.
In the above-mentioned method, described compressed moulding step preferably adopts normal temperature compressed moulding process, hot press forming technology or preheating compressing and forming process.
In the above-mentioned method, described normal temperature compressed moulding process preferably refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 15%～20% before the moulding, forming pressure preferably is controlled at 80～100MPa, compression time is controlled at 8～10s, and the water ratio of product is 8%～12% after the moulding.
In the above-mentioned method, described hot press forming technology preferably refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 12%～15% before the moulding, forming pressure preferably is controlled at 70～75MPa, simultaneously mold for forming is heated during moulding, make cotton stalk core temperature wherein be controlled at 140 ℃～170 ℃, hot pressing time is controlled at 40～50s, and the water ratio of product is 8%～12% after the moulding.In hot-forming, the xylogen in the cotton stalk core is when temperature rises to 160 ℃, and the beginning melting forms colloidalmaterial, has played the function of tackiness agent.Hot press forming technology can also make the carbonization of product outer surface, strengthens its Shatter resistance and water permeability resistance.
In the above-mentioned method, cotton stalk core after described preheating compressing and forming process preferably refers to will pulverize first places a preheater to heat, the cotton stalk core water ratio of control is 12%～15% before the preheating, preheating temperature is 140 ℃～170 ℃, then the cotton stalk core after the preheating is sent in the mold for forming, utilize simultaneously biomass forming machine to be pressed into cotton stalk core granular, bar-shaped or block, forming pressure preferably is controlled at 70～75Mpa, the temperature of described mold for forming preferably is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30～40s, and the water ratio of product is 8%～12% after the moulding.
In above-mentioned preferred three kinds of compressing and forming process, characteristics according to cotton stalk core processing, most preferably adopt the preheating compressing and forming process, in this preheating compressing and forming process, make first the xylogen in the cotton stalk core when being preheating to 160 ℃, begin melting formation colloidalmaterial, played the function of tackiness agent; Subsequently hot-forming makes the carbonization of product outer surface, strengthened its Shatter resistance and water permeability resistance; Simultaneously because cotton stalk core raw material has been carried out preheating, in the molded middle rubbing effect that has reduced cotton stalk core raw material and mold for forming of subsequent thermal, not only can reduce the compressed moulding time (in the situation of same pressure), improve the working efficiency of described biomass forming machine, but also can prolong the work-ing life of mold for forming.
Compared with prior art, the invention has the advantages that:
1, the present invention at first provides a kind of clean fuel of standard type.Cotton stalk core biomass compression fuel of the present invention is a kind of have specified shape (according to customer need), solid fuel that density is larger, its thermo-efficiency is high, ash content is few, pollute few, harmless to boiler, and be convenient to transportation and storage, development green energy resource, clean energy and enforcement energy-saving and emission-reduction are had important realistic meaning.
2, cotton stalk core biomass compression fuel of the present invention more is conducive to the production domesticization of boiler, effectively reduces production unit cost and the early investment of enterprise.The characteristics such as common biomass fuel is low owing to calorific value, volume is little, ash fusion point is low, carry the requirement of feeding system high to boiler and raw material thereof, this biomass fuel generating set that causes China is all mainly from external import, and is expensive, construction investment is large, the maintenance of equipment difficulty.And cotton stalk core biomass compression fuel of the present invention is as the larger solid molding fuel of density, can replace coal to be used as the fuel of general industry boiler, and owing to do not contain cotton stalk skin in the fuel, ash oontent in the fuel is reduced to about 1.56% by original 4.7%, reduced the erosion to boiler plant, coal firing boiler is just transformed a little can use biomass compression fuel of the present invention, and this has created favourable condition for the production domesticization of China's biomass fuel boiler equipment.
3, method of the present invention has improved the added value of cotton stalk greatly, and the Application Areas of product is widened greatly.Method of the present invention is cotton stalk skin to be separated with cotton stalk core in advance again utilize, with cotton stalk core for the production of biomass compression fuel, this cotton stalk core biomass compression fuel not only can be as the fuel of Industrial Boiler, also can be widely used in rural area heating, hot water service, booth intensification and agricultural byproducts oven dry etc., also carbonizing treatment be can make, wooden carbon and activated carbon etc. produced.The cotton stalk skin that obtains simultaneously then can be used for weaving or produces the raw materials for production of paper pulp, this so that the added value of cotton stalk greatly increase.
4, method of the present invention efficiently solves directly cotton stalk to be pulverized and makes the variety of issue that fuel exists, owing to carried out in advance the skin-corn separation processing, this has shortened the process time greatly so that follow-up pulverizing, the compressed moulding of cotton stalk all are more prone to, and has improved production efficiency and quality product.
5, economic benefit of the present invention is obvious, has greatly improved the profitability of enterprise.We are take one ton of cotton stalk as example, its purchasing price is 200 yuan, can produce cotton stalk skin 250kg and cotton stalk core 750kg, as pulpwood, the price of the cotton stalk skin of 250kg is 500 yuan (cotton stalk skin is about 2000 yuan/tons as the purchasing price of pulpwood), and be about 100 yuan/tons according to the cost of technique separation of the present invention, the cotton stalk skin of production, therefore the incremental benefit of byproduct can significantly reduce the production cost of shaped fuel, add country to the fiscal subsidy of stalk Energy production enterprise, this type of enterprise can really realize making a profit instead of suffering a loss.
Embodiment
Embodiment 1:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the advanced sector-style of cotton stalk that will remove cotton root, cotton leaf and cottonseed is done, air-dry to water content below 12%, guarantee the fragility of cotton stalk, be easy to fracture, prepare for next step cotton stalk skin-core separates;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, the skin-corn separation rate reaches more than 90% after the processing, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 90%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the production scene as the raw material of textile and paper;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to length below 5mm;
5, normal temperature compressed moulding: the moisture control of the cotton stalk core raw material after will pulverizing adopts the machining of normal temperature shaped by fluid pressure 20%, and forming pressure is 85MPa, forming mould is Φ 100X100mm, compression time is 8～10s, and every compressed fuel weighs 4.8～6kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
Content through cotton stalk core in the cotton stalk core biomass compression fuel of above-mentioned steps production is 85%～90%, and the length of cotton stalk core is below 5mm, and the pressed density of compressed fuel is 1400kg/m
3, relaxed density is 840kg/m
3, water ratio is about 10%, and the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Embodiment 2:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the advanced sector-style of cotton stalk that will remove cotton root, cotton leaf and cottonseed is done, air-dry to water content below 12%, guarantee the fragility of cotton stalk, be easy to fracture, prepare for next step cotton stalk skin-core separates;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, the skin-corn separation rate reaches more than 90% after the processing, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 90%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the production scene as the raw material of textile and paper;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to below the length 5mm;
5, hot-forming: the moisture control of the cotton stalk core raw material after will pulverizing is 15%, adopt biomass forming machine and hot press forming technology to process, be when cotton stalk core raw material pressurizes in mold for forming, mould is carried out electrically heated, die temperature is controlled at 230 ℃～270 ℃, make the cotton stalk core inner temperature in the mould reach 140 ℃～170 ℃, forming pressure is 70MPa, the hot pressing time of every briquette fuel is 40s, forming mould is Φ 140X120mm, every compressed fuel weighs 12～16kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
Content through cotton stalk core in the cotton stalk core biomass compression fuel of above-mentioned steps production is 85%～90%, and the length of cotton stalk core is below 5mm, and its pressed density is 1200kg/m
3, its relaxed density is 790kg/m
3, water ratio is about 10%, and the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Embodiment 3:
A kind of method of comprehensive utilization of cotton stalk may further comprise the steps:
1, raw materials pretreatment: the cotton stalk that will remove cotton root, cotton leaf and cottonseed carries out first drying, is dried to water content below 12%, guarantees the fragility of cotton stalk, is easy to fracture, for next step cotton stalk skin-core separation is prepared;
2, cotton stalk skin-core separates: will process with the cotton stalk skin-core separating machine through pretreated cotton stalk, the skin-corn separation rate reaches more than 90% after the processing, and it is isometric to separate the cotton stalk skin and the cotton stalk that obtain, is straight band shape; Cotton stalk core after the separation is the particle shape, and pure rate is more than 95%, and the length of cotton stalk core is 5～30mm;
3, the recycling of cotton stalk skin: the cotton stalk skin after the cotton stalk skin-core separation is collected, puts in order, packed, transport out of the production scene as the raw material of textile and paper; Cotton stalk mulberry paper slurry after wherein processing is for the production of board product, and the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is used for the raw material of textile industry;
4, cotton stalk core is pulverized: utilize the cotton stalk core after pulverizer separates cotton stalk skin-core further to be crushed to below the length 5mm;
5, preheating compressed moulding: the moisture control of the cotton stalk core raw material after will pulverizing is 15%, before raw material enters the biomass forming machine compression, cotton stalk core after will pulverizing first places a preheater with electric heating or fuel Heating, preheating temperature is 140 ℃～170 ℃, make xylogen contained in the cotton stalk core softening, play the effect of cakingagent; Then the cotton stalk core after the preheating is sent in the mold for forming, utilize simultaneously biomass forming machine to be pressed into cotton stalk core bar-shaped, forming pressure is controlled at 70MPa, the temperature of mold for forming is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30s, forming mould is Φ 140X120mm, and every compressed fuel weighs 12～16kg after the moulding, and water ratio is about 10%;
6, cooling, packing: the compressed fuel after the moulding is carried out naturally cooling, when the compressed fuel temperature is lower than 30 ℃, pack, obtain finished product.
Content through cotton stalk core in the cotton stalk core biomass compression fuel of above-mentioned steps production is 85%～90%, and the length of cotton stalk core is below 5mm, and the pressed density of this biomass compression fuel is 1150kg/m
3, relaxed density is 770kg/m
3, water ratio is 10%, the volume-diminished of compressed fuel is convenient to store and transportation more than ten times very much.After tested, the thermo-efficiency of the cotton stalk core biomass compression fuel of present embodiment is 36.7%, is 1.71 times of common cotton stalk fuel (21.5%); The ash oontent of this cotton stalk core biomass compression fuel is 1.56%, only is about 1/3 of common cotton stalk fuel (4.7%).
Claims (2)
1. the preparation method of a cotton stalk core biomass compression fuel, may further comprise the steps: take water ratio at the cotton stalk below 12% as raw material, adopt the cotton stalk skin-core separating machine that cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment, the cotton stalk core of the particle shape that obtains after separating is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, pressure-controlling during compressed moulding is at 70～100 MPa, cool off after the compressed moulding, pack, obtain cotton stalk core biomass compression fuel;
Described compressed moulding step is to adopt normal temperature compressed moulding process, hot press forming technology or preheating compressing and forming process;
Described normal temperature compressed moulding process refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 15%～20% before the moulding, forming pressure is controlled at 80～100 MPa, compression time is controlled at 8～10 s, and the water ratio of product is 8%～12% after the moulding;
Described hot press forming technology refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 12%～15% before the moulding, forming pressure is controlled at 70～75 MPa, simultaneously mold for forming is heated during moulding, make cotton stalk core temperature wherein be controlled at 140 ℃～170 ℃, hot pressing time is controlled at 40～50 s, and the water ratio of product is 8%～12% after the moulding;
Cotton stalk core after described preheating compressing and forming process refers to will pulverize first places a preheater to heat, the cotton stalk core water ratio of control is 12%～15% before the preheating, preheating temperature is 140 ℃～170 ℃, then the cotton stalk core after the preheating is sent in the mold for forming, utilize simultaneously biomass forming machine to be pressed into cotton stalk core granular, bar-shaped or block, forming pressure is controlled at 70～75 MPa, the temperature of described mold for forming is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30～40 s, and the water ratio of product is 8%～12% after the moulding.
2. the method for comprehensive utilization of a cotton stalk, may further comprise the steps: take water ratio at the cotton stalk below 12% as raw material, adopt the cotton stalk skin-core separating machine that cotton stalk skin and the cotton stalk core of described cotton stalk are carried out separating treatment, obtain the cotton stalk core of particle shape and banded cotton stalk skin after the separation; To carry out follow-up degumming process after the described cotton stalk skin arrangement, the cotton stalk hide fiber that cotton stalk skin generates after coming unstuck is as the raw material of textile industry, and the cotton stalk mulberry paper slurry after the processing is as the paper raw material; Simultaneously described cotton stalk core is crushed to below the 5mm length, then the cotton stalk core after pulverizing is carried out compressed moulding, the pressure-controlling during compressed moulding is cooled off after the compressed moulding, is packed at 70～100 MPa, obtains cotton stalk core biomass compression fuel;
Described compressed moulding step is to adopt normal temperature compressed moulding process, hot press forming technology or preheating compressing and forming process;
Described normal temperature compressed moulding process refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 15%～20% before the moulding, forming pressure is controlled at 80～100 MPa, compression time is controlled at 8～10 s, and the water ratio of product is 8%～12% after the moulding;
Described hot press forming technology refers to utilize biomass forming machine to be pressed into described cotton stalk core granular, bar-shaped or block, the cotton stalk core water ratio of control is 12%～15% before the moulding, forming pressure is controlled at 70～75 MPa, simultaneously mold for forming is heated during moulding, make cotton stalk core temperature wherein be controlled at 140 ℃～170 ℃, hot pressing time is controlled at 40～50 s, and the water ratio of product is 8%～12% after the moulding;
Cotton stalk core after described preheating compressing and forming process refers to will pulverize first places a preheater to heat, the cotton stalk core water ratio of control is 12%～15% before the preheating, preheating temperature is 140 ℃～170 ℃, then the cotton stalk core after the preheating is sent in the mold for forming, utilize simultaneously biomass forming machine to be pressed into cotton stalk core granular, bar-shaped or block, forming pressure is controlled at 70～75 MPa, the temperature of described mold for forming is controlled at 180 ℃～200 ℃ during moulding, hot pressing time is controlled at 30～40 s, and the water ratio of product is 8%～12% after the moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107878 CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107878 CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787315A CN101787315A (en) | 2010-07-28 |
| CN101787315B true CN101787315B (en) | 2013-01-09 |
Family
ID=42530697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010107878 Expired - Fee Related CN101787315B (en) | 2010-02-10 | 2010-02-10 | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101787315B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2321104B1 (en) | 2008-06-26 | 2013-10-09 | Re Community Energy, LLC | Method for integrated waste storage |
| CN102021059B (en) * | 2010-12-10 | 2013-07-31 | 华北电力大学 | Forming method for modifying biomass fuel by rapid thermal treatment process |
| CN103717715B (en) | 2011-06-03 | 2017-09-15 | 谐和能源有限责任公司 | Systems and methods for designing fuel feedstocks from waste material preparation processes |
| CN103131437A (en) * | 2011-11-25 | 2013-06-05 | 仇峰 | Manufacturing method of solid bamboo charcoal in compression molding mode |
| CN108998140A (en) * | 2018-08-21 | 2018-12-14 | 芜湖聚焰生物质能源科技有限公司 | A kind of compression process of biomass fuel |
| CN109082323A (en) * | 2018-08-21 | 2018-12-25 | 芜湖聚焰生物质能源科技有限公司 | A kind of preparation method of biomass fuel |
| CN110205176B (en) * | 2019-04-29 | 2021-02-26 | 天津大学 | Preparation method of corn straw solid formed fuel based on skin-stalk separation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263907A (en) * | 2004-03-17 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Solid wood fuel |
| CN101085939A (en) * | 2006-06-07 | 2007-12-12 | 北京盛昌绿能科技有限公司 | Biomass composite solid forming fuel and preparation method thereof |
| CN200996061Y (en) * | 2007-01-24 | 2007-12-26 | 凌受明 | Cotton-stalk skin-core separater |
| CN101230491A (en) * | 2007-01-24 | 2008-07-30 | 凌受明 | Cotton stalk skin-core mechanical separation method and special equipment |
-
2010
- 2010-02-10 CN CN 201010107878 patent/CN101787315B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263907A (en) * | 2004-03-17 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Solid wood fuel |
| CN101085939A (en) * | 2006-06-07 | 2007-12-12 | 北京盛昌绿能科技有限公司 | Biomass composite solid forming fuel and preparation method thereof |
| CN200996061Y (en) * | 2007-01-24 | 2007-12-26 | 凌受明 | Cotton-stalk skin-core separater |
| CN101230491A (en) * | 2007-01-24 | 2008-07-30 | 凌受明 | Cotton stalk skin-core mechanical separation method and special equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101787315A (en) | 2010-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101787315B (en) | Cotton stalk core biomass compression fuel, method for preparing same and comprehensive utilization method of cotton stalks | |
| CN102191101B (en) | Production method of biomass moulded coal | |
| Bhattacharya et al. | State of the art for biomass densification | |
| CN104388141B (en) | A kind of high fine and close biomass molding fuel preparation method | |
| CN101157873A (en) | Biological energy source modeling coal and production technique | |
| CN101240205A (en) | A method for preparing briquettes from agricultural waste | |
| KR20110115610A (en) | How to produce biomass-based fuel with pulp processing equipment | |
| CN101979478A (en) | Method for preparing biofuel | |
| CN102161926A (en) | Biomass carbon-based briquetted coal for replacing fossil fuel and production process thereof | |
| CN103602359A (en) | Mixed biomass briquette fuel and forming method thereof | |
| CN101497836A (en) | Organic waste solid forming fuel and production method thereof | |
| CN102061314A (en) | Method for co-producing biogas and solid briquette fuel from herbaceous lignocellulosic raw materials | |
| CN102535223B (en) | Method for preparing and grading contrapuntal aramid pulp | |
| CN101824348B (en) | Method for preparing biomass compact fuel with rubber seed hull | |
| CN102585960A (en) | Preparation method of biomass derivative fuel | |
| CN101440380A (en) | Technological process for coproduction of ethanol, fibre and power generation by bamboo wood layered multi-stage conversion | |
| CN103103864B (en) | Method for preparing chemical-mechanical pulp for corrugating medium by using palm fresh empty fruit bunches | |
| CN102268847A (en) | Method for manufacturing formaldehyde-free plant fiber packaging material | |
| JP3223767U (en) | Wood fuel pellet manufacturing equipment | |
| CN103131499A (en) | Black liquid bamboo charcoal and manufacturing method thereof | |
| CN112211022A (en) | Method and device for fibering straw by hot pressing method | |
| CN103131495B (en) | Hot compression plasticizing molding charcoal and manufacturing method thereof | |
| CN107236560A (en) | A kind of technique that coking is carried out to the molding mass containing low-order coal, rubbish and biomass | |
| CN104087359B (en) | The material integrated-type manufacture method of biological particles | |
| CN110964581A (en) | Post-forming biomass fuel production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20220210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |