CN104746370A - Preparation technology for mulberry shoot bleaching chemimechanical pulp - Google Patents
Preparation technology for mulberry shoot bleaching chemimechanical pulp Download PDFInfo
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- CN104746370A CN104746370A CN201510097445.0A CN201510097445A CN104746370A CN 104746370 A CN104746370 A CN 104746370A CN 201510097445 A CN201510097445 A CN 201510097445A CN 104746370 A CN104746370 A CN 104746370A
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- thread rolling
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- mulberry shoot
- rolling machine
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- 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
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Medicines Containing Plant Substances (AREA)
- Preparation Of Fruits And Vegetables (AREA)
- Paper (AREA)
Abstract
The invention discloses a preparation technology for mulberry shoot bleaching chemimechanical pulp. The preparation technology includes the following steps: (1) a mulberry shoot is cut into sections ranging from 35 mm to 50 mm, washing and sundry removing are carried out, and dehydration and air steaming are carried outer after sundry removing is carried out; (2) materials obtained in the step (1) are conveyed into a first-section thread rolling machine, standing is carried out for 40 min after thread rolling is carried out, and then washing is carried out, wherein according to the oven dry material weight, 4% of NaOH, 2.5% of H2O2 and 0.1% of EDTA are added into the first-section thread rolling machine; (3) the materials obtained in the step (2) are conveyed into a second-section thread rolling machine, standing is carried out for 40 min after thread rolling is carried out, and then washing is carried out, wherein according to the oven dry material weight, 3% of NaOH, 5% of H2O2, 0.3% of polyacrylamide (PAM) and 1% of MgSO4 are added into the second-section thread rolling machine; (4) high consistency refining is carried out on materials obtained in the step (3), latency removing is carried out, and then the mulberry shoot bleaching chemimechanical pulp is obtained. Compared with a traditional chemical method, the higher pulp yield and the higher whiteness can be obtained.
Description
Technical field
The invention belongs to field of papermaking, be specifically related to the preparation technology of mulberry shoot bleached chemi-mechanical pulp.
Background technology
Mulberry tree belongs to perennial phreatophyte, strong to soil and climatic adaptation, has the features such as growth is fast.At present done some researchs for white mulberry strips slurrying, pulping process mainly adopts chemical method (sulphite process), but chemical method exists pollutional load is large, yield is low problem.
Summary of the invention
The object of the invention is to overcome Problems existing in existing mulberry shoot slurrying, a kind of preparation technology of mulberry shoot bleached chemi-mechanical pulp is provided.
The technical scheme that the present invention is adopted for achieving the above object is as follows:
The preparation technology of mulberry shoot bleached chemi-mechanical pulp, step is as follows:
(1) mulberry shoot is cut into the section material of 35-50mm, washing impurity-removing, and dehydration after removal of impurities, gas are steamed;
(2) first paragraph thread rolling machine sent into by the material that step (1) obtains, and leaves standstill 40-50min, then wash, wherein, by over dry weight of material in first paragraph thread rolling machine, add 3-5% NaOH, 2-3% H after thread rolling
2o
2with 0.05-0.15% EDTA;
(3) second segment thread rolling machine sent into by the material that step (2) obtains, and leaves standstill 40-50min, then wash, wherein, by over dry weight of material in second segment thread rolling machine, add 2-4% NaOH, 4-6% H after thread rolling
2o
2, 0.2-0.4% polyacrylamide (PAM) and 0.5-1.5% MgSO
4;
(4) material that step (3) obtains carries out high consistency refining, latenter through disappearing, and obtains mulberry shoot bleached chemi-mechanical pulp.
Further, step (1) gas condition of steaming is: normal pressure, temperature 90-95 DEG C, time 30-50min.
Further, during step (4) described high consistency refining, slurry concentration is 25-30wt%.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details.
Embodiment 1
(1) mulberry shoot is cut into the equal refining section of 35-50mm, qualified section material is sent into washing removing impurity in twin drum material washing machine, then carry out gas steaming (normal pressure, temperature 90-95 DEG C) in spiral dewater feeding gas steaming storehouse, gas steams time 30min.
(2) first paragraph twin-screw thread rolling machine sent into by the material that step (1) obtains, and presses the weighing scale of over dry material, add 4% NaOH, 2.5% H in the thread rolling machine of this section
2o
2with 0.1% EDTA; Material after thread rolling is delivered to reaction warehouse and is left standstill 40min, sends in press master again and wash after reacting and leaving standstill.
(3) second segment twin-screw thread rolling machine sent into by the material that step (2) obtains, and by over dry weight of material in the thread rolling machine of this section, adds 3% NaOH, 5% H
2o
2, 0.3% PAM and 1% MgSO
4; Material after thread rolling is sent into reaction warehouse and is left standstill 40min, after reacting and leaving standstill, carry out inverse formula washing through two sections of press masters.
(4) material that step (3) obtains is sent into high-density paste mill and is carried out high consistency refining (slurry concentration 25-30wt%), thick slurry after mill is sent in hydrabrusher and is carried out latent (the slurry concentration 4-5wt% that disappears, time 10-15min), namely obtain mulberry shoot bleached chemi-mechanical pulp.
Embodiment 2
(1) mulberry shoot is cut into the equal refining section of 35-50mm, qualified section material is sent into washing removing impurity in twin drum material washing machine, then carry out gas steaming (normal pressure, temperature 90-95 DEG C) in spiral dewater feeding gas steaming storehouse, gas steams time 50min.
(2) first paragraph twin-screw thread rolling machine sent into by the material that step (1) obtains, and presses the weighing scale of over dry material, add 3.5% NaOH, 2% H in the thread rolling machine of this section
2o
2with 0.15% EDTA; Material after thread rolling is delivered to reaction warehouse and is left standstill 40min, sends in press master again and wash after reacting and leaving standstill.
(3) second segment twin-screw thread rolling machine sent into by the material that step (2) obtains, and by over dry weight of material in the thread rolling machine of this section, adds 3.5% NaOH, 6% H
2o
2, 0.4% PAM and 1% MgSO
4; Material after thread rolling is sent into reaction warehouse and is left standstill 50min, after reacting and leaving standstill, carry out inverse formula washing through two sections of press masters.
(4) material that step (3) obtains is sent into high-density paste mill and is carried out high consistency refining (slurry concentration 25-30wt%), thick slurry after mill is sent in hydrabrusher to carry out disappearing and latently (is starched concentration 4-5wt% when disappearing latent, time 10-15min), namely obtain mulberry shoot bleached chemi-mechanical pulp.
Unless otherwise indicated, device therefor of the present invention is conventional equipment.
Adopt the yield of the inventive method mulberry shoot bleached chemi-mechanical pulp to reach 75-80%, whiteness can reach 78-82 degree, and copy paper bulk is good.
In addition, industrial chemicals consumption of the present invention is less, and lignin stripping is few, and water wasting process is more simpler than traditional handicraft, and expense is little.
Claims (3)
1. the preparation technology of mulberry shoot bleached chemi-mechanical pulp, step is as follows:
(1) mulberry shoot is cut into the section material of 35-50mm, washing impurity-removing, and dehydration after removal of impurities, gas are steamed;
(2) first paragraph thread rolling machine sent into by the material that step (1) obtains, and leaves standstill 40-50min, then wash, wherein, by over dry weight of material in first paragraph thread rolling machine, add 3-5% NaOH, 2-3% H after thread rolling
2o
2with 0.05-0.15% EDTA;
(3) second segment thread rolling machine sent into by the material that step (2) obtains, and leaves standstill 40-50min, then wash, wherein, by over dry weight of material in second segment thread rolling machine, add 2-4% NaOH, 4-6% H after thread rolling
2o
2, 0.2-0.4% polyacrylamide and 0.5-1.5% MgSO
4;
(4) material that step (3) obtains carries out high consistency refining, latenter through disappearing, and namely obtains mulberry shoot bleached chemi-mechanical pulp.
2. the preparation technology of mulberry shoot bleached chemi-mechanical pulp according to claim 1, is characterized in that, the gas condition of steaming of step (1) is: normal pressure, temperature 90-95 DEG C, time 30-50min.
3. the preparation technology of mulberry shoot bleached chemi-mechanical pulp according to claim 1, it is characterized in that, during step (4) described high consistency refining, slurry concentration is 25-30wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097445.0A CN104746370B (en) | 2015-03-05 | 2015-03-05 | The preparation technology of mulberry shoot bleached chemi-mechanical pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097445.0A CN104746370B (en) | 2015-03-05 | 2015-03-05 | The preparation technology of mulberry shoot bleached chemi-mechanical pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104746370A true CN104746370A (en) | 2015-07-01 |
| CN104746370B CN104746370B (en) | 2016-10-19 |
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| CN201510097445.0A Active CN104746370B (en) | 2015-03-05 | 2015-03-05 | The preparation technology of mulberry shoot bleached chemi-mechanical pulp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200838A (en) * | 2015-09-18 | 2015-12-30 | 新疆国力源投资有限公司 | Method of preparing bamboo willow bleaching pulp |
| CN105256625A (en) * | 2015-09-18 | 2016-01-20 | 新疆国力源投资有限公司 | Method for preparing bleached bamboo pulp |
| CN108999007A (en) * | 2018-08-02 | 2018-12-14 | 南京高新工大生物技术研究院有限公司 | A kind of component deletion form plant long fibre and the preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101205690A (en) * | 2006-12-21 | 2008-06-25 | 廉书平 | Sea-buckthorn pulping method and sea-buckthorn pulp thereof |
| US20090288789A1 (en) * | 2008-03-12 | 2009-11-26 | Andritz Inc. | Medium consistency refining method of pulp and system |
| CN101613976A (en) * | 2009-07-17 | 2009-12-30 | 中国林业科学研究院林产化学工业研究所 | Utilize the method for whole straw of mulberry tree branch preparing bleached chemi-mechanical pulp |
-
2015
- 2015-03-05 CN CN201510097445.0A patent/CN104746370B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101205690A (en) * | 2006-12-21 | 2008-06-25 | 廉书平 | Sea-buckthorn pulping method and sea-buckthorn pulp thereof |
| US20090288789A1 (en) * | 2008-03-12 | 2009-11-26 | Andritz Inc. | Medium consistency refining method of pulp and system |
| CN101613976A (en) * | 2009-07-17 | 2009-12-30 | 中国林业科学研究院林产化学工业研究所 | Utilize the method for whole straw of mulberry tree branch preparing bleached chemi-mechanical pulp |
Non-Patent Citations (1)
| Title |
|---|
| 陈瑜等: "漂白棉秆机械浆的生产实践", 《纸和造纸》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200838A (en) * | 2015-09-18 | 2015-12-30 | 新疆国力源投资有限公司 | Method of preparing bamboo willow bleaching pulp |
| CN105256625A (en) * | 2015-09-18 | 2016-01-20 | 新疆国力源投资有限公司 | Method for preparing bleached bamboo pulp |
| CN108999007A (en) * | 2018-08-02 | 2018-12-14 | 南京高新工大生物技术研究院有限公司 | A kind of component deletion form plant long fibre and the preparation method and application thereof |
Also Published As
| Publication number | Publication date |
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| CN104746370B (en) | 2016-10-19 |
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Effective date of registration: 20161021 Address after: 830000, No. 2, building 6, Nanshan New District office building, the Xinjiang Uygur Autonomous Region, Shihezi Patentee after: Xinjiang Guoliyuan Investment Co., Ltd. Address before: 830000, the Xinjiang Uygur Autonomous Region, Urumqi hi tech Development Zone, 21, Yu Xin District, Guilin Road, 3, 4, 2, 402 Patentee before: Xinjiang Power Eco Japan Co., Ltd. of state |
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Inventor after: Teng Tiesheng Inventor after: Zhang Yueping Inventor before: Teng Tiesheng Inventor before: Zhang Yueping |
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Effective date of registration: 20190517 Address after: No. 19 Maqiao District, Shihutan Town, Shihezi City, Xinjiang Uygur Autonomous Region, 832000 Patentee after: Shihezi Guoliyuan Environmental Protection Pulping Co., Ltd. Address before: 830000 No. 6, 2nd floor, Nanshan New District Office Building, Shihezi City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Guoliyuan Investment Co., Ltd. |
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