CN1167857A - Method for making paper pulp from wood chip - Google Patents
Method for making paper pulp from wood chip Download PDFInfo
- Publication number
- CN1167857A CN1167857A CN 97107516 CN97107516A CN1167857A CN 1167857 A CN1167857 A CN 1167857A CN 97107516 CN97107516 CN 97107516 CN 97107516 A CN97107516 A CN 97107516A CN 1167857 A CN1167857 A CN 1167857A
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- China
- Prior art keywords
- wood chip
- paper pulp
- making paper
- alkali
- wood
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Abstract
A method for making paper pulp with wood refuse in which the content of saw dust is less than 30% includes preparing alkali and sulfide solution, addition of wood refuse, charging in reaction ball, rotating and then pressurizing. Obtained paper pulp has longer fibres, and can be used to make different kinds of paper.
Description
The present invention relates to make the method for paper pulp, particularly relate to method with making paper pulp from wood chip.
In a large number as the raw material of micro-organisms, this utilization is more extensive at wood chip, particularly sawmilling face on the market.Also do not find with wood chip and a certain proportion of sawmilling method of producing paper pulp of looking unfamiliar.
Purpose of the present invention just provides a kind of method with making paper pulp from wood chip.
The objective of the invention is to finish like this: the method with making paper pulp from wood chip comprises: in the preparation of alkali and sulphurizing salt solution, the adding of wood chip, the reaction sphere of packing into, be pressed into paper pulp through dallying, adding, the consumption of alkali and vulcanized sodium accounts for the 16-20% of wood chip dry gross weight, NaOH accounts for 82% in 16-20%, vulcanized sodium accounts for 18%, and the pressure in the reaction sphere is at 0-6Mpa.
Purpose of the present invention can be finished equally like this: the mixing of the same alkali of wood chip, vulcanized sodium salting liquid is joined and is turned to 1: 2.5-1: 3.0.
Purpose of the present invention can also be finished like this: the content of sawmilling face is lower than 30% in the wood chip.
The present invention has following advantage:
1, saves timber stands, protected the forest reserves.With the manufacturer of timber papermaking, adopt the lumbering trees at present, trees are cut the method for defibrination and made paper pulp.This had both wasted the forest reserves, had increased product cost again.The present invention then adopts leftover bits and pieces such as sawmilling face in the Wood Processing, wood shavings bits, dig slag makes paper pulp, has not only saved resource but also has reduced the cost of product.
2, the paper pulp fiber that adopts the inventive method to produce is long and even, can satisfy the quality requirement of the various paper of production and processing.
3, the method that adopts of the present invention need not screened the wood chip of various materials, has improved production efficiency and has widened availability to raw material.
4, the inventive method is applied to existing general papermaking enterprise, does not need increase equipment and increases any investment.
Further be illustrated below in conjunction with embodiment, but be not limited only to following examples.
For example produce paper pulp with one ton of wood chip of the inventive method processing, its technological process is: preparation alkali, salting liquid take by weighing NaoH and Na by 20% of wood chip weight
2Among the S20%, NaoH accounts for 82% and is 164 kilograms, Na
2S accounts for 18% and is 36 kilograms, and above alkali, salt are added water 2.5-3.0 ton; Wood chip (wherein sawmilling face is 300 kilograms, 700 kilograms of other wood chips) is added in alkali, the salting liquid, and wood chip dry and alkali, salting liquid proportioning are 1: 2.5-1: between 3.0; Wood chip alkali and sulphurizing salt solution are packed in the reaction sphere, through idle running pressurization in 30 minutes 30 minutes to 4Mpa10 minute, little venting, boost 30 minutes to 4Mpa keep 10 minutes, step-down power to zero, boost and kept whitewashing in 1 hour half to 6Mpa, 6Mpa in 1 hour.
The paper pulp fiber degree that adopts the inventive method to make is long and evenly, and the matter slag is less than 2%, and yield rate is at 40-45%, the manganese value 15 ±----20 ±.
Claims (3)
1, uses the method for making paper pulp from wood chip, it is characterized in that: this method comprises in the preparation of alkali and sulphurizing salt solution, the adding of wood chip, the reaction sphere of packing into, is pressed into paper pulp through dallying and adding, the consumption of alkali and vulcanized sodium accounts for the 16-20% of wood chip dry gross weight, wherein NaoH account for 82%, Na
2S accounts for 18%, and the pressure in the reaction sphere is at 0-6Mpa.
2, the method with making paper pulp from wood chip according to claim 1, it is characterized in that: wood chip is 1 with the mixing match of alkali and sulphurizing salt solution: 2.5-1: 3.0.
3, the method with making paper pulp from wood chip according to claim 1, it is characterized in that: the content of sawmilling face is less than 30% in the wood chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107516 CN1167857A (en) | 1997-05-22 | 1997-05-22 | Method for making paper pulp from wood chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107516 CN1167857A (en) | 1997-05-22 | 1997-05-22 | Method for making paper pulp from wood chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1167857A true CN1167857A (en) | 1997-12-17 |
Family
ID=5169628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97107516 Pending CN1167857A (en) | 1997-05-22 | 1997-05-22 | Method for making paper pulp from wood chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1167857A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669059A (en) * | 2013-12-11 | 2014-03-26 | 苏州谊恒印务有限公司 | Preparation method of wood chip printing paper pulp |
| CN104532655A (en) * | 2014-11-14 | 2015-04-22 | 阜南县腾祥工艺品有限公司 | Sawdust/cottonseed meal-based paper for knitting technology, and preparation method thereof |
-
1997
- 1997-05-22 CN CN 97107516 patent/CN1167857A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669059A (en) * | 2013-12-11 | 2014-03-26 | 苏州谊恒印务有限公司 | Preparation method of wood chip printing paper pulp |
| CN104532655A (en) * | 2014-11-14 | 2015-04-22 | 阜南县腾祥工艺品有限公司 | Sawdust/cottonseed meal-based paper for knitting technology, and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |