CN102787521A - Cooking liquid compensation technology used for intermittent cooking - Google Patents
Cooking liquid compensation technology used for intermittent cooking Download PDFInfo
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- CN102787521A CN102787521A CN201110127930XA CN201110127930A CN102787521A CN 102787521 A CN102787521 A CN 102787521A CN 201110127930X A CN201110127930X A CN 201110127930XA CN 201110127930 A CN201110127930 A CN 201110127930A CN 102787521 A CN102787521 A CN 102787521A
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- cooking
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- 238000010411 cooking Methods 0.000 title claims abstract description 56
- 238000005516 engineering process Methods 0.000 title abstract description 10
- 239000007788 liquid Substances 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 15
- 238000009835 boiling Methods 0.000 description 13
- 239000002002 slurry Substances 0.000 description 6
- 238000010025 steaming Methods 0.000 description 5
- 238000004537 pulping Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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Abstract
The invention relates to a paper pulp fiber raw material cooking technology, and especially relates to a cooking liquid compensation technology used for intermittent cooking. A device for realizing the technology mainly comprises a cooking liquid compensator and a traditional gap cooking apparatus. The technology can be used in the intermittent cooking of the fiber raw material in various new large, medium and small pulp mills and technically improved extension projects of old large, middle and small pulp mills. After a traditional intermittent cooking device is combined with the technology disclosed in the invention, the cooking performance of the traditional intermittent cooking device is obviously improved, the crude residue problem is basically and effectively solved, the production power of a cooker can be improved by about 5-10%, the uniformity and the physical strength of the paper pulp are improved, the pulp preparation cost is reduced, the product added value is improved, and the economic benefit is obvious.
Description
Affiliated technical field
The present invention relates to a kind of boiling technology of paper pulp fiber raw material, a kind of cooking liquor compensation technique that is used for batch cooking.
Background technology
At present both at home and abroad pulp mill to the batch cooking equipment of wood and non-wood fiber raw material commonly used mainly contain two types of vertical digester (being called for short upright pot) and rotary spherical digesters; Along with paper industry is fast-developing; During the nearly last ten years; Rotary spherical digester constantly is eliminated owing to the shortcoming that exists on the structure is more, and is replaced by vertical digester gradually.But it is even that the maximum shortcoming of traditional batch cooking equipment is a half steaming, and thick slag rate is up to 5-10%.So-called thick slag, be fibrous raw material in digester through still can not pulping after the boiling, still keep physical property and the form of fibrous raw material before boiling basically; Whole pot slurry is picked out failing the impurity of pulping through screening earlier after the boiling, and these impurity are exactly to fail the fibrous raw material of pulping in fact, are called thick slag again; These thick slags can not be used to the paper of manufacturing paper with pulp, and waste material is burnt or boiling again and can only be used as, and have caused the waste of resource; Reduce the digester production capacity, strengthened the slurrying cost.
Cause the too high main cause of the thick slag rate of boiling to be; 1, in the alkaline process batch cooking, cooking liquor is smaller, causes the formation space on digester top.2, in digestion process, along with boiling temperature and pressure raise gradually, especially behind the intensification that gets into boiling, holding stage, the lignin in the fibrous raw material removes and stripping in a large number; The blackening and become black liquor gradually of the color of cooking liquor, the proportion of cooking liquor also continues to increase, and volume but constantly dwindles; Through after the boiling, fibrous raw material is pulping gradually, and pot entoplasm liquid level descends gradually; Make slurries face and pot top form bigger space, though it is the fibrous raw material that floats on the slurries face has the cooking liquor of the circulation pipe that is positioned at pot top constantly to spray, very inhomogeneous; Some fibrous raw material be spray less than, perhaps spray insufficiently, cause a part of fibrous raw material to boil and do not pass through; Perhaps half cooked, formed " raw material ".These what is called " raw material " just become thick slag.In traditional batch cooking, from the quality of whole pot slurry, the lignin stripping degree of the upper strata slurry of digester and lower floor's slurry also exists than big-difference, has caused half steaming even.Because thick slag rate is high, pulp quality is poor, and added value of product is low, and cost is high, and the digester production capacity descends, causes economic benefit low.For a long time, the too high problem of the thick slag rate of traditional batch digester still has to be solved.Therefore, improve the pulp cooking quality, reduce the slurrying cost, one of them important technique measure is exactly to solve even, the thick too high technology problem of slag rate of half steaming that the traditional batch digesting apparatus exists.
Summary of the invention
The objective of the invention is provides a kind of cooking liquor compensation technique that is used for batch cooking for all kinds of large, medium and small pulp mills (comprising construction of new factory and the technological transformation enlarging of old factory).There is even, the thick problem that the slag rate is too high, economic benefit is low of half steaming in it according to the traditional batch digesting apparatus, and research and design goes out a kind of small investment, power consumption is low, easy and simple to handle, safe and reliable to operation, boiling even, thick low, the good in economic efficiency a kind of cooking liquor compensation technique that is used for batch cooking of slag rate spy.
The technical solution adopted for the present invention to solve the technical problems is: in the top, next door of original traditional batch cooking equipment (1); A cooking liquor compensator (2) is installed; Link to each other with the top of digesting apparatus with conduit (6) and communicate at the below leakage fluid dram (5) of cooking liquor compensator (2); The top inlet (4) of cooking liquor compensator (2) is connected with feed pipe (3), and the minimum level of cooking liquor compensator (2) is monitored through instrument automatically.In the boiling overall process, the minimum level of cooking liquor compensator (2) is controlled on the high liquid level (HLL) of digesting apparatus all the time, and keeps certain liquid level poor; Fibrous raw material to guarantee any corner in the digesting apparatus can both be soaked by cooking liquor in the boiling overall process; Make the lignin in the fibrous raw material be able to fully remove and stripping, prevented that " raw material " form, and have fundamentally avoided the generation of thick slag; Make boiling even, improved pulp quality and added value of product.
The invention has the beneficial effects as follows: 1. make one to being considered to technical equipment backwardness, even, the thick too high traditional batch digesting apparatus (1) of slag rate of half steaming; Through the present invention has disposed a cover cooking liquor compensator (2) for it after; Just make its cooking characteristic obtain significantly improving; The long-term too high problem of insoluble thick slag rate is fundamentally effectively solved, and be expected from then on to have thoroughly done away with the generation of thick slag.2. the slurrying production capacity of digesting apparatus can improve about 5-10%.3. the paper pulp uniformity and physical strength obviously improve.4. improved added value of product, reduced the slurrying cost, strengthened product competitiveness, remarkable in economical benefits is a kind of new and effective batch cooking equipment thereby promote this traditional batch digesting apparatus quickly.5. the present invention is practical, and is of many uses, both can be used in the technological transformation of common upright pot, rotary spherical digester and other batch cooking equipment of old factory, also can offer new factory and use the supporting back of cooking liquor compensator (2) and digesting apparatus (1) is complete, and market prospects are wide.
Description of drawings
Fig. 1 is an apparatus arrangement schematic front view of the present invention.
Fig. 2 is an apparatus arrangement diagrammatic top view of the present invention.
1. batch cooking equipment among the figure, 2. cooking liquor compensator, 3. feed pipe, 4. inlet, 5. leakage fluid dram, 6. conduit.
The specific embodiment
The present invention realizes through following technical scheme; Cooking liquor compensator (2) is a kind of very common pressure vessel; Be easy to make; The supporting digesting apparatus of material and operating pressure and its is identical; Can carry out processing and manufacturing by the regulation and the requirement of the GB150-1998 manufacturing technology standard of country, batch cooking equipment (1) (like upright pot, rotary spherical digester etc.) then is that prior art is equipped, and also is the traditional batch digesting apparatus that is in daily use.Cooking liquor compensator (2) and digesting apparatus (1) processing and manufacturing are respectively pressed Fig. 1 and Fig. 2 combination and installation then.The volume size of cooking liquor compensator (2) is decided by the volume of the digesting apparatus supporting with it and required compensation liquid measure.Carry out the water pressure test after the equipment installation of cooking liquor compensator (2) and digesting apparatus (1) and the pipeline installation, it is subsequent use that production is transferred in the normal back of pressure testing and dry run.
Claims (2)
1. cooking liquor compensation technique that is used for batch cooking is characterized in that: it is formed a complete set of by batch cooking equipment (1) and cooking liquor compensator (2) and becomes a kind of novel digesting apparatus with cooking liquor compensate function.Leakage fluid dram (5) below the cooking liquor compensator (2) links to each other with batch cooking equipment (1) top, and inlet (4) is connected with feed pipe (3).
Cooking liquor compensator (2) not only can with uses that form a complete set of of upright pot, rotary spherical digester, also can with the batch cooking coordinative composition of equipments combination use of other type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127930XA CN102787521A (en) | 2011-05-16 | 2011-05-16 | Cooking liquid compensation technology used for intermittent cooking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110127930XA CN102787521A (en) | 2011-05-16 | 2011-05-16 | Cooking liquid compensation technology used for intermittent cooking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102787521A true CN102787521A (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110127930XA Pending CN102787521A (en) | 2011-05-16 | 2011-05-16 | Cooking liquid compensation technology used for intermittent cooking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102787521A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0344462A1 (en) * | 1988-05-31 | 1989-12-06 | KAMYR Aktiebolag | Continuous cooking pulp quality enhancements |
| CN1049202A (en) * | 1990-07-26 | 1991-02-13 | 西南计算中心 | Automatic control method and device for pulp ingredient cooking |
| CN1051404A (en) * | 1989-10-30 | 1991-05-15 | 美商贝洛特公司 | Method and apparatus from the two ends displacement liquid of boiling vessel |
| WO1994025668A1 (en) * | 1993-05-04 | 1994-11-10 | Kamyr, Inc. | Dissolved solids control in pulp production |
| WO1997038157A1 (en) * | 1996-04-04 | 1997-10-16 | Impco-Voest-Alpine Pulping Technologies Gmbh | Process for continuously guiding liquids when digesting pulp in a digester |
| CN101387087A (en) * | 2007-08-07 | 2009-03-18 | 安德里兹有限公司 | Method and system for semi-chemical pulping |
-
2011
- 2011-05-16 CN CN201110127930XA patent/CN102787521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0344462A1 (en) * | 1988-05-31 | 1989-12-06 | KAMYR Aktiebolag | Continuous cooking pulp quality enhancements |
| CN1051404A (en) * | 1989-10-30 | 1991-05-15 | 美商贝洛特公司 | Method and apparatus from the two ends displacement liquid of boiling vessel |
| CN1049202A (en) * | 1990-07-26 | 1991-02-13 | 西南计算中心 | Automatic control method and device for pulp ingredient cooking |
| WO1994025668A1 (en) * | 1993-05-04 | 1994-11-10 | Kamyr, Inc. | Dissolved solids control in pulp production |
| WO1997038157A1 (en) * | 1996-04-04 | 1997-10-16 | Impco-Voest-Alpine Pulping Technologies Gmbh | Process for continuously guiding liquids when digesting pulp in a digester |
| CN101387087A (en) * | 2007-08-07 | 2009-03-18 | 安德里兹有限公司 | Method and system for semi-chemical pulping |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20121121 |