CN1384241A - Low pressure herbal material blasting pulp making process - Google Patents
Low pressure herbal material blasting pulp making process Download PDFInfo
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- CN1384241A CN1384241A CN 02115319 CN02115319A CN1384241A CN 1384241 A CN1384241 A CN 1384241A CN 02115319 CN02115319 CN 02115319 CN 02115319 A CN02115319 A CN 02115319A CN 1384241 A CN1384241 A CN 1384241A
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- mesolow
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Abstract
The low pressure herbal raw material blasting and pulp making process includes raw material pre-treatment of adding alkali, sodium sulfide and assistant to herbal raw material with stirring at normal temperature to 90 deg.c high temperature and high pressure treatment of the material in a blast tank at 110-210 deg.c and 0.5-1.9 MPa for 1-15 min; and blowing to blast the material instantaneously to a receiving container. The herbal pulp thus produced has strength equivalent to that of chemical pulp and the present invention has high yield, low power consumption, low cost and high pulp whiteness.
Description
Technical field
The present invention relates to the pulping technique of field of papermaking.Grass as raw material mesolow blast pulping method in more detail.
Background technology
Grass as raw material is the important fibre resources of China.Straw pulp is the main raw material of present China paper pulp.But because chemical method is mostly adopted in grass as raw material slurrying, a large amount of pollutants of annual discharge.Grass as raw material chemical pulping treating waste liquid all has very large difficulty technically and economically, therefore closes owing to a large amount of grass as raw material paper mill of the reason of requirement on environmental protection and profit aspect has been closed or has been on the verge of.
Paper industry faces very how-do-you-do at present.Consume a large amount of foreign exchanges on the one hand and buy import pulpboard and waste paper; Be dense smoke gathering in season everywhere in the field on the other hand, valuable fibre resources is burnt till atmosphere pollution in vain.
Summary of the invention
The objective of the invention is to the shortcoming that exists at prior art, a kind of grass as raw material mesolow blast pulping method be provided, the intensity that makes careless plasmoid near or be equivalent to chemical pulp, the yield height, the whiteness height, refining energy consumption is low, cost is low.
Grass as raw material mesolow blast pulping method of the present invention comprises the steps:
---pretreatment of raw material: the medicine (drug dosage is that relative raw material oven dry weight calculates) that in grass as raw material, adds following consumption: alkali 0-6%
Sodium-sulphur compound 0-16%
Auxiliary agent 0-1% stirred 0-24 hour under normal temperature-90 ℃ temperature;
---high temperature high pressure process: pretreated material is packed in the cavity charge containers, under 110-210 ℃, 0.5mpa-1.9mpa pressure, handled 1-15 minute;
---spurt: raw material moment explosion is spurted to receiving vessel.
Described alkali refers to wherein one or more mixtures of NaOH, sodium carbonate, lime.
Described sodium-sulphur compound refers to wherein one or more mixtures of sodium thiosulfate, dithionate, polysulfide, sodium sulfite, vulcanized sodium.
Described auxiliary agent refers to surface reactive material one or more mixtures wherein of high temperature resistant, the anti-highly basic of nonionic or anionic.
The present invention can require to select refining process according to last slurry, but can single hop also multistage defibrination.
The present invention compared with prior art has following advantage:
1, operation pressure of the present invention is little, temperature is low, the processing time is short, dosage is little.Therefore little to the damage of fiber itself, thus the yield height, the whiteness height, the intensity height pollutes and lacks, and cost is low.And this technology is simple, easily realizes industrialization.
2, process equipment of the present invention is simple, adopts low pressure explosion, and refining energy consumption is low, the yield height of slurry, and whiteness is higher, and intensity can match in excellence or beauty with chemical pulp, pollutes few.Can make cultural papers such as high-strength cardboard, corrugated paper, writing paper, copy paper.
3, this technology can make the raw fiber intercellular layer division of explosion rear section, S
1Layer segment destroys, S
1And S
2Slabbing is opened.And apparent material is not separated into fiber fully.Can make like this and reduce in the blasting process, reduce the stripping of lignin and hemicellulose cellulosic destruction.But owing in blasting process, have considerable part fiber S
1Destroyed or and S
2The combination of layer weakens, and makes slurry that high yield is arranged like this, but making beating easily, and the adhesion that is similar to chemical pulp is arranged between the fiber.Overcome the contradiction between the combination and yield between the fiber to a great extent.Therefore this plasmoid has the intensity of chemical pulp, is similar to the yield of chemi-mechanical pulp, and higher whiteness is arranged.
The specific embodiment
With the sisal hemp is example:
---pretreatment of raw material: the medicine (drug dosage is that relative raw material oven dry weight calculates) that in grass as raw material, adds following consumption: NaOH 5%
Sodium sulfite consumption 6%
JFC bleeding agent 0.1% stirred 2 hours at normal temperatures;
---high temperature high pressure process: pretreated material is packed in the cavity charge containers, under 200 ℃, 1.8mpa pressure, handled 3 minutes;
---spurt: raw material moment explosion is spurted to receiving vessel;
---2 sections defibrinations
---making beating: it is as follows that 50 ° of SR of beating degree obtain pulp property: fracture length 7.5KM, yield 90%, whiteness 45%, tear index 7.26mN.m
2/ g, burst index 3.17kPa.m
2/ g.
With the waste material that this method uses sisal hemp to process, its paper pulp can be used for production high-performance paper or cardboard.Adopt the yield 65-70% of sulfate or caustic soda-anthraquinone method chemical pulping, fracture length 7-8KM, whiteness 30-35%, tear index 7.5-8mN.m
2/ g, burst index 3.5-4.5kPam
2/ g.
As seen explosion pulp yield height, the whiteness height, cost is low.And this technology makes bast-fibre modulus height, and the superiority that intensity is big is not fully exerted.Paper pulp wastewater adopts flocculation, filters, and can be recycled then.
Claims (6)
1, a kind of grass as raw material mesolow blast pulping method is characterized in that comprising the steps:
---pretreatment of raw material: the medicine (drug dosage is that relative raw material oven dry weight calculates) that in grass as raw material, adds following consumption: alkali 0-6%
Sodium-sulphur compound 0-16%
Auxiliary agent 0-1% stirred 0-24 hour under normal temperature-90 ℃ temperature;
---high temperature high pressure process: pretreated material is packed in the cavity charge containers, under 110-210 ℃, 0.5mpa-1.9mpa pressure, handled 1-15 minute;
---spurt: raw material moment explosion is spurted to receiving vessel.
2, grass as raw material mesolow blast pulping method according to claim 1 is characterized in that also comprising follow-up defibrination step.
3, grass as raw material mesolow blast pulping method according to claim 1 and 2 is characterized in that described alkali refers to wherein one or more mixtures of NaOH, sodium carbonate, lime.
4, grass as raw material mesolow blast pulping method according to claim 1 and 2 is characterized in that described sodium-sulphur compound refers to wherein one or more mixtures of sodium thiosulfate, dithionate, polysulfide, sodium sulfite, vulcanized sodium.
5, grass as raw material mesolow blast pulping method according to claim 1 and 2 is characterized in that described auxiliary agent refers to surface reactive material one or more mixtures wherein of high temperature resistant, the anti-highly basic of nonionic or anionic.
6, grass as raw material mesolow blast pulping method according to claim 1 and 2 is characterized in that described alkali refers to wherein one or more mixtures of NaOH, sodium carbonate, lime; Described sodium-sulphur compound refers to wherein one or more mixtures of sodium thiosulfate, dithionate, polysulfide, sodium sulfite, vulcanized sodium; Described auxiliary agent refers to surface reactive material one or more mixtures wherein of high temperature resistant, the anti-highly basic of nonionic or anionic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021153191A CN1195118C (en) | 2002-06-03 | 2002-06-03 | Low pressure herbal material blasting pulp making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021153191A CN1195118C (en) | 2002-06-03 | 2002-06-03 | Low pressure herbal material blasting pulp making process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1384241A true CN1384241A (en) | 2002-12-11 |
| CN1195118C CN1195118C (en) | 2005-03-30 |
Family
ID=4743578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021153191A Expired - Fee Related CN1195118C (en) | 2002-06-03 | 2002-06-03 | Low pressure herbal material blasting pulp making process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195118C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410036A (en) * | 2013-08-15 | 2013-11-27 | 齐鲁工业大学 | Production method for high-yield hardwood pulp |
| CN103422380A (en) * | 2013-08-15 | 2013-12-04 | 齐鲁工业大学 | Needlebush high-yield slurrying method |
| CN107618210A (en) * | 2017-09-21 | 2018-01-23 | 安吉志达包装厂 | A kind of manufacturing process of high-strength corrugated board |
-
2002
- 2002-06-03 CN CNB021153191A patent/CN1195118C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410036A (en) * | 2013-08-15 | 2013-11-27 | 齐鲁工业大学 | Production method for high-yield hardwood pulp |
| CN103422380A (en) * | 2013-08-15 | 2013-12-04 | 齐鲁工业大学 | Needlebush high-yield slurrying method |
| CN103422380B (en) * | 2013-08-15 | 2015-11-18 | 齐鲁工业大学 | A kind of method of needlebush high yield cooking |
| CN103410036B (en) * | 2013-08-15 | 2015-11-18 | 齐鲁工业大学 | A kind of production method of high-yield hardwood pulp |
| CN107618210A (en) * | 2017-09-21 | 2018-01-23 | 安吉志达包装厂 | A kind of manufacturing process of high-strength corrugated board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1195118C (en) | 2005-03-30 |
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Granted publication date: 20050330 Termination date: 20120603 |