CN102191707A - Low temperature rapid pulping process of reed - Google Patents
Low temperature rapid pulping process of reed Download PDFInfo
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- CN102191707A CN102191707A CN 201010614076 CN201010614076A CN102191707A CN 102191707 A CN102191707 A CN 102191707A CN 201010614076 CN201010614076 CN 201010614076 CN 201010614076 A CN201010614076 A CN 201010614076A CN 102191707 A CN102191707 A CN 102191707A
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Abstract
The invention relates to a low temperature rapid pulping process of reed. The process comprises steps of material preparation, boiling and bleaching, and is characterized in that the boiling means adding a prepared boiling liquid into a spiral pre-extractor to be completely mixed with reed sheets, filling into a globe digester, running without load for 30 min, then heating for 90 min, spraying after heat preservation for 30 min, wherein appropriate boiling parameters are controlled within the period. The process of the present invention changes a traditional boiling process, so as to substantially improve pulping evenness and pulping rate, and further raise boiling quality. In addition, the process can alleviate environmental protection pressure, mitigate alkali recovery load, and is apt to adjust and without influence to system stabilization. Therefore, the process has potential popularization value.
Description
Technical field
The invention belongs to the paper-making pulping process applied technical field, particularly relate to a kind of reed low temperature quickly preparing cement paste technology.
Background technology
In traditional pulping and digesting technology, mainly be to adopt alkaline process thermophilic digestion method to carry out material cooking to the boiling of reed, there is following technological deficiency in this digesting technoloy; The one, boiling steam consumption height, big to fibre damage, the boiling maximum temperature can reach 170 ℃, and pressure reaches 6.0～6.5Mpa; The 2nd, digestion time is long, reaches 4.1 hours; The 3rd, boiling efficiency is low, and pulping evenness is poor, and single ball yield is low.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of pulping evenness good, yield height, the quick paper pulp of reed low temperature that the slurry recovery rate is high.
For achieving the above object, the present invention adopts following technical proposals:
A kind of reed low temperature quickly preparing cement paste technology, its processing step comprise get the raw materials ready, boiling and bleaching process, it is characterized in that: described boiling is meant that the cooking liquor that will configure joins in the spiral preimpregnation device and the rotary spherical digester of packing into after the reed sheet fully mixes, enter down the road program after passing through dry run, intensification, be incubated and spurt
The boiling parameter is:
Bleeding agent is 6kg/25m
3Ball,
Alkali charge: the 18-20%(liquid caustic soda adds with the ratio of white liquid according to 1:1);
The cooking liquor ratio is 1:2.8,
Cooking liquor temperature 〉=80 ℃,
Dry run: 30 minutes,
Heat up: 90 minutes,
Insulation: 30 minutes,
Spurt: 15 minutes.
Described cut-out, screening and the dipping of getting the raw materials ready and being meant raw material;
CEH tri-stage bleaching method is adopted in described bleaching.
Above-mentioned bleeding agent is the efficient digesting assistant of CL-3 type, it is the pulping and digesting special assistant of producing by the prosperous grand papermaking material Co., Ltd in Baoji, form by anthraquinone and high molecular polymer and the reaction of multi-functional anion active compound, the base main feature is to improve thickness slurry interest rate, pulp brightness and fibre strength are improved the scourability of paper pulp, save material, shorten digestion time, reduce production costs.
Reed low temperature quickly preparing cement paste technology of the present invention has following technical advantage:
1. by material papering section being removed dust, the reed film in the raw material, reduce the viscosity of slurry, help soaking into fast of cooking liquor simultaneously, and reduce chemical materials consumption.
2. utilize three sections preimpregnation devices and group heating method, impel cooking liquor fully " atomizing ", the back combines preimpregnation with the reed large tracts of land, effectively improves boiling evenness and pulping rate.
3. by control digesting technoloy parameter, improve the material reducing recovery rate.
In sum, reed low temperature quickly preparing cement paste process reform of the present invention traditional sahio base method pulping process, thereby make pulping evenness and pulping rate have clear improvement, the slurry deslagging is little, and cooking quality is further enhanced, boiling disposed slurry recovery rate height, black-liquor combustion rate height, its slurry washing waste water COD, SS value can descend 20%, and the bleached pulp whiteness can reach more than 75%, and bleached pulp magma (bleached pulp is without making beating) weight in wet base can reach 3.5～4g.The present invention can effectively be alleviated environmental protection pressure, alleviates alkali and reclaims load, and be easy to adjust and do not influence the stable of system, has certain popularization value.
Be the contrast table of the present invention and traditional reed pulping process below:
Description of drawings
Fig. 1 is the process chart of getting the raw materials ready among the present invention.
The specific embodiment
1. get the raw materials ready
The reed of shipping is outward sent into the rotor chaffcutter through belt conveyor and cuts off.Reed after the cut-out enters goat's horn (bipyramid) deduster and carries out dedusting, removal of impurities, membrane removal.Enter the preimpregnation device afterwards and carry out the outer preimpregnation of ball.Reed, cooking liquor carry out chip charging with packer by packer after the preimpregnation of preimpregnation device.Current technology is carried out the secondary charging, and charging for the first time spends 70% of cooking liquor, and charging for the second time spends 30% of cooking liquor.Secondary charging finishing rear seal-cover dallies the boiling that heats up in 30 minutes of dallying.Heating-up time is 90 minutes, and temperature retention time 30 minutes is spurted by spraying pot after boiling finishes, and extracts black liquor by the extruding of single-screw press master, and the slurry that extruding is come out is delivered to 2 vacuum pulp washing machines that extract workshop section and carried out countercurrent washing extraction black liquor.Black liquor send between the alkali recovery vehicle and handles.
2, boiling,
2.1 cooking liquor preparation
With liquid caustic soda and white liquid difference heat temperature raising to 80
0More than the C, add according to the ratio of 1:1.
2.2 boiling
The cooking liquor that configures is joined in the spiral preimpregnation device and the rotary spherical digester of packing into after the reed sheet fully mixes, dally after 30 minutes, 90 minutes heating-up times, be warming up to 0.6MPa; Spurt after being incubated 30 minutes again.
The boiling parameter is:
Bleeding agent is 6kg/25m
3Ball
Cooking liquor is than being 1:2.8
Cooking liquor volume 10.0-13.0m
3/ 25m
3Ball
80～85 ℃ of cooking liquor temperature
Alkali charge 17～20%
Boiling curve (unit: minute):
3. bleaching
Adopt CEH tri-stage bleaching method, its bleached pulp whiteness can reach more than 73%.
Claims (3)
1. reed low temperature quickly preparing cement paste technology, its processing step comprise get the raw materials ready, boiling and bleaching process, it is characterized in that: described boiling is meant that the cooking liquor that will configure joins in the spiral preimpregnation device and the rotary spherical digester of packing into after the reed sheet fully mixes, through dry run, intensification, be incubated and spurt after enter down the road program;
Described boiling parameter is:
Bleeding agent is 6kg/25m
3Ball,
Alkali charge: 18-20%;
The cooking liquor ratio is 1:2.8,
Cooking liquor temperature 〉=80 ℃,
Dry run: 30 minutes,
Heat up: 90 minutes,
Insulation: 30 minutes,
Spurt: 15 minutes.
2. according to the described reed low temperature of claim 1 quickly preparing cement paste technology, it is characterized in that: described cut-out, screening and the dipping of getting the raw materials ready and being meant raw material.
3. according to the described reed low temperature of claim 1 quickly preparing cement paste technology, it is characterized in that: CEH tri-stage bleaching method is adopted in described bleaching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614076 CN102191707B (en) | 2010-12-30 | 2010-12-30 | Low temperature rapid pulping process of reed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010614076 CN102191707B (en) | 2010-12-30 | 2010-12-30 | Low temperature rapid pulping process of reed |
Publications (2)
| Publication Number | Publication Date |
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| CN102191707A true CN102191707A (en) | 2011-09-21 |
| CN102191707B CN102191707B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010614076 Expired - Fee Related CN102191707B (en) | 2010-12-30 | 2010-12-30 | Low temperature rapid pulping process of reed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517971A (en) * | 2011-12-19 | 2012-06-27 | 中冶美利纸业股份有限公司 | Preparation method for mixed pulp of wheat straw and reed |
| CN103103842A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Pulping method for waste Renminbi |
| CN103726376A (en) * | 2013-12-30 | 2014-04-16 | 中冶美利纸业股份有限公司 | Intermittent low-temperature quick pulping process for broad-leaf wood |
| CN105735022A (en) * | 2016-02-24 | 2016-07-06 | 孔凡宾 | Pulping chemical for papermaking and pulping process using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074259A (en) * | 1992-12-24 | 1993-07-14 | 湖北省丹江口市第一造纸厂 | A kind of method of producingn rust-proof paper using Chinese alpine rush instead of wood pulp |
| JPH1029661A (en) * | 1996-07-15 | 1998-02-03 | Nippon Esuko Kk | Manufacture of packaging container |
| CN1297084A (en) * | 1999-11-22 | 2001-05-30 | 黑龙江省兴凯湖造纸厂 | Middle- and high-grade stationery paper made of rice straw pulp and its making process |
| CN1865583A (en) * | 2006-06-07 | 2006-11-22 | 岳阳纸业股份有限公司 | Pulping process for mixed Devil's Rush herb and reed |
| CN101634117A (en) * | 2008-07-24 | 2010-01-27 | 新疆博湖苇业股份有限公司 | Method for preparing pulp board by using reed as raw material |
-
2010
- 2010-12-30 CN CN 201010614076 patent/CN102191707B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074259A (en) * | 1992-12-24 | 1993-07-14 | 湖北省丹江口市第一造纸厂 | A kind of method of producingn rust-proof paper using Chinese alpine rush instead of wood pulp |
| JPH1029661A (en) * | 1996-07-15 | 1998-02-03 | Nippon Esuko Kk | Manufacture of packaging container |
| CN1297084A (en) * | 1999-11-22 | 2001-05-30 | 黑龙江省兴凯湖造纸厂 | Middle- and high-grade stationery paper made of rice straw pulp and its making process |
| CN1865583A (en) * | 2006-06-07 | 2006-11-22 | 岳阳纸业股份有限公司 | Pulping process for mixed Devil's Rush herb and reed |
| CN101634117A (en) * | 2008-07-24 | 2010-01-27 | 新疆博湖苇业股份有限公司 | Method for preparing pulp board by using reed as raw material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517971A (en) * | 2011-12-19 | 2012-06-27 | 中冶美利纸业股份有限公司 | Preparation method for mixed pulp of wheat straw and reed |
| CN102517971B (en) * | 2011-12-19 | 2015-09-09 | 中冶美利纸业股份有限公司 | A kind of preparation method of wheat straw reed mixing slurry |
| CN103103842A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Pulping method for waste Renminbi |
| CN103726376A (en) * | 2013-12-30 | 2014-04-16 | 中冶美利纸业股份有限公司 | Intermittent low-temperature quick pulping process for broad-leaf wood |
| CN105735022A (en) * | 2016-02-24 | 2016-07-06 | 孔凡宾 | Pulping chemical for papermaking and pulping process using same |
| CN105735022B (en) * | 2016-02-24 | 2018-04-13 | 孔凡宾 | A kind of paper-making pulping liquid and the pulping process using the liquid |
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| Publication number | Publication date |
|---|---|
| CN102191707B (en) | 2013-01-16 |
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