CN100357517C - Pretreatment liquid of cotton rod boiling - Google Patents
Pretreatment liquid of cotton rod boiling Download PDFInfo
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- CN100357517C CN100357517C CNB2005101042924A CN200510104292A CN100357517C CN 100357517 C CN100357517 C CN 100357517C CN B2005101042924 A CNB2005101042924 A CN B2005101042924A CN 200510104292 A CN200510104292 A CN 200510104292A CN 100357517 C CN100357517 C CN 100357517C
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- boiling
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- cotton stalk
- pretreatment liquid
- cotton
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Abstract
The present invention relates to a boiling and preprocessing liquid of cotton stalk paper making. The boiling and preprocessing liquid of cotton stalk in the present invention is characterized in that 1 to 5 wt % of sodium hydroxide and 0.01 to 0.5 wt % of sodium borohydride are contained. After cotton stalk is preprocessed by the boiling and preprocessing liquid of the present invention, compared with paper pulp prepared by conventional boiling, the fine pulp yield of the present invention is increased by 1 to 6 %, the whiteness is increased by 8 to 15 % ISO, and the kappa number is reduced by 6 to 10.
Description
(1) technical field under
The present invention relates to a kind of papermaking digesting pretreatment fluid, particularly a kind of cotton stalk papermaking digesting pretreatment fluid.
(2) background technology
Produce the cotton stalk paper pulp of bleaching, bad with traditional boiling method effect, be difficult to bleaching.Adopt the microbial pretreatment technology, the cycle is long, the cost height.
(3) summary of the invention
The present invention provides a kind of pretreatment liquid of cotton rod boiling in order to overcome the deficiency of above technology, has the advantages that cost is low, production technology is simple, bleaching effect is good, paper pulp yield is high.
The present invention realizes by following measure:
The present invention relates to a kind of pretreatment liquid of cotton rod boiling, its special feature is: contain the NaOH of 1-5% weight, the sodium borohydride of 0.01-0.5% weight.
Pretreatment liquid of cotton rod boiling of the present invention, preferred technical scheme be, sodium hydrate content is 1-3%, and sodium borohydride content is 0.02-0.2%.
Concrete using method is: before the boiling cotton stalk is got the raw materials ready back the adding in the preliminary treatment soup of the present invention, under 90 ℃ of temperature, handle 30min, squeeze out the preliminary treatment soup then, add conventional cooking liquor (caustic soda-anthraquinone method and kraft cooking method all can) again, carry out normal boiling.
After adopting cotton stalk boiling pretreatment fluid of the present invention that cotton stalk is carried out preliminary treatment, compare with the paper pulp that conventional boiling obtains: screened yield improves 1-6%, and whiteness can improve 8-15%ISO, and Kappa number has reduced 6-10.
(4) specific embodiment
Embodiment 1:
After cotton stalk is got the raw materials ready, add in the pretreatment fluid of sodium borohydride of the NaOH contain 3% weight, 0.05% weight, under 90 ℃ of temperature, handle 30min, squeeze out the preliminary treatment soup then, add again in caustic soda-anthraquinone cooking liquor and carry out boiling, slurrying according to a conventional method again.
After tested: screened yield improves 6%, and whiteness can improve 8.2%ISO, and Kappa number has reduced by 5.8.(obtain the cotton stem pulp quality with conventional caustic soda-anthraquinone method boiling and compare, screened yield 35.5%, unbleached pulp 19.5%ISO, Kappa number are 20.66.Down together).
Embodiment 2:
After cotton stalk is got the raw materials ready, add in the pretreatment fluid of sodium borohydride of the NaOH contain 1% weight, 0.01% weight, under 90 ℃ of temperature, handle 30min, squeeze out the preliminary treatment soup then, add again in caustic soda-anthraquinone cooking liquor and carry out boiling, slurrying according to a conventional method again.
After tested: screened yield improves 4%, and whiteness can improve 7.2%ISO, and Kappa number has reduced by 7.8.
Embodiment 3:
After cotton stalk is got the raw materials ready, add in the pretreatment fluid of sodium borohydride of the NaOH contain 4% weight, 0.4% weight, under 90 ℃ of temperature, handle 30min, squeeze out the preliminary treatment soup then, add again in caustic soda-anthraquinone cooking liquor and carry out boiling, slurrying according to a conventional method again.
After tested: screened yield improves 1%, and whiteness can improve 13.2%ISO, and Kappa number has reduced by 9.8.
Embodiment 4:
After cotton stalk is got the raw materials ready, add in the pretreatment fluid of sodium borohydride of the NaOH contain 2% weight, 0.05% weight, under 90 ℃ of temperature, handle 30min, squeeze out the preliminary treatment soup then, add again and carry out boiling, slurrying according to a conventional method again in the kraft cooking liquid.Screened yield 40.2%, unbleached pulp 35.7%ISO, Kappa number 12.15.(conventional kraft cooking obtains the cotton stem pulp quality: screened yield 38.5%, unbleached pulp 20.2%ISO, Kappa number 15.65.)
Claims (2)
1. pretreatment liquid of cotton rod boiling is characterized in that: be the pretreatment fluid of being made by the sodium borohydride of the NaOH of 1-5% weight and 0.01-0.5% weight.
2. pretreatment liquid of cotton rod boiling according to claim 1 is characterized in that: sodium hydrate content is 1-3%, and sodium borohydride content is 0.02-0.2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042924A CN100357517C (en) | 2005-10-14 | 2005-10-14 | Pretreatment liquid of cotton rod boiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042924A CN100357517C (en) | 2005-10-14 | 2005-10-14 | Pretreatment liquid of cotton rod boiling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769584A CN1769584A (en) | 2006-05-10 |
| CN100357517C true CN100357517C (en) | 2007-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101042924A Expired - Fee Related CN100357517C (en) | 2005-10-14 | 2005-10-14 | Pretreatment liquid of cotton rod boiling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100357517C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
| BR102014027199B1 (en) * | 2014-07-14 | 2022-10-04 | Nalco Company | METHOD TO IMPROVE THE MANUFACTURING OF SODA OR KRAFT PULP |
| CN106758454A (en) * | 2016-12-09 | 2017-05-31 | 苏州艾博迈尔新材料有限公司 | A kind of compound digesting assistant and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220788A (en) * | 1991-04-17 | 1994-08-09 | Elf Atochem Sa | Preparation of pulp with high yield and high degree of bleaching for paper manufacturing |
| CN1247248A (en) * | 1999-07-29 | 2000-03-15 | 曹大平 | Full-circulation pollution-free pulping and papermaking process by using waste water |
| CN1340121A (en) * | 1999-02-15 | 2002-03-13 | 柯兰姆有限公司 | Oxygen pulping of lignocellulosic materials and recovery of pulping chemicals |
| CN1554827A (en) * | 2003-12-26 | 2004-12-15 | 华泰集团有限公司 | Technology for preparing alkali hydrogen peroxide chemical machinery pulping |
-
2005
- 2005-10-14 CN CNB2005101042924A patent/CN100357517C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06220788A (en) * | 1991-04-17 | 1994-08-09 | Elf Atochem Sa | Preparation of pulp with high yield and high degree of bleaching for paper manufacturing |
| CN1340121A (en) * | 1999-02-15 | 2002-03-13 | 柯兰姆有限公司 | Oxygen pulping of lignocellulosic materials and recovery of pulping chemicals |
| CN1247248A (en) * | 1999-07-29 | 2000-03-15 | 曹大平 | Full-circulation pollution-free pulping and papermaking process by using waste water |
| CN1554827A (en) * | 2003-12-26 | 2004-12-15 | 华泰集团有限公司 | Technology for preparing alkali hydrogen peroxide chemical machinery pulping |
Non-Patent Citations (4)
| Title |
|---|
| 全棉秆蒸煮工艺条件的优化 王刘键，詹怀宇，陈嘉川，杨桂花，贾帅.中华纸业，第26卷第9期 2005 * |
| 纤维素预处理技术的发展 唐爱民，梁文芷.林产化学与工业，第19卷第4期 1999 * |
| 造纸植物纤维原料制浆前的预处理技术 李春鸣，陈嘉川，赵建，杨桂花.黑龙江造纸，第3期 2005 * |
| 非木材纤维原料制浆技术研究进展 黄国林，张成芳，方耀.化工进展，第5期 2001 * |
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| Publication number | Publication date |
|---|---|
| CN1769584A (en) | 2006-05-10 |
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