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Unbleached pulp, and preparation process, application and preparation device of unbleached pulp

A preparation process, a technology for uncolored pulp, applied in multi-stage pulping process, non-woody plant/crop pulp, textiles and papermaking, etc., can solve the problems of high cost, comprehensive utilization rate of less than 40%, complex auxiliary ingredients, etc. Achieve high pulp yield, significant pulping effect, and save heating costs.

Inactive Publication Date: 2017-10-20
北京泽鑫荣创秸秆科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] On the other hand, the annual output of crop straw and waste wood in my country is as high as 100 million tons, but the comprehensive utilization rate is less than 40%.
[0016] However, it is worth noting that in the production process of pulping with additives, the additives are complex, not only costly, but also cannot be applied to food packaging or tableware, which will significantly affect the quality of pulping. And the cost of slurry treatment in the later stage is higher

Method used

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  • Unbleached pulp, and preparation process, application and preparation device of unbleached pulp
  • Unbleached pulp, and preparation process, application and preparation device of unbleached pulp
  • Unbleached pulp, and preparation process, application and preparation device of unbleached pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Example 1 A natural color paste and its pulping process

[0091] A kind of natural color paste is made by wheat straw, and the production scale is 10,000 tons of annual output slurry, and the beating degree of gained natural color paste is the beating of 55-70 ° SR, and the preparation process is as follows:

[0092] (1) Raw material crushing: the wheat straw is preliminarily crushed, the crushing rate is 3t / h, and the length after the primary crushing is 2cm.

[0093] (2) Iron removal treatment: the pulverized raw material in step (1) is subjected to iron removal treatment;

[0094] The iron removal treatment is two-stage. The crushed raw materials are firstly subjected to one-stage iron removal to remove iron-containing impurities close to the surface of the belt in the raw materials, and then undergo a second-stage iron removal to remove iron-containing impurities inside the raw materials; iron removal treatment steps and raw materials The raw material processing ra...

Embodiment 2

[0102] Example 2 A natural color paste and its pulping process

[0103] A kind of natural color paste, made of straw, the production scale is 10,000 tons of annual output of slurry, the beating degree of gained natural color paste is the beating of 55-70 ° SR, and the preparation process is as follows:

[0104] (1) Raw material crushing: the rice straw is preliminarily crushed, the crushing rate is 2t / h, and the length after the primary crushing is 1cm.

[0105] (2) Iron removal treatment: the pulverized raw material in step (1) is subjected to iron removal treatment;

[0106] The iron removal treatment is two-stage. The crushed raw materials are firstly subjected to one-stage iron removal to remove iron-containing impurities close to the surface of the belt in the raw materials, and then undergo a second-stage iron removal to remove iron-containing impurities inside the raw materials; iron removal treatment steps and raw materials The raw material processing rate ratio for t...

Embodiment 3

[0114] Example 3 A natural color paste and its pulping process

[0115] A kind of natural color pulp is made by waste wood chips, and the production scale is 10,000 tons of annual output of slurry, and the beating degree of gained natural color pulp is the beating of 60°SR, and the preparation process is as follows:

[0116] (1) Raw material crushing: Preliminary crushing of waste wood chips, the crushing rate is 4t / h, and the length after primary crushing is 3cm.

[0117] (2) Iron removal treatment: the pulverized raw material in step (1) is subjected to iron removal treatment;

[0118] The iron removal treatment is two-stage. The crushed raw materials are firstly subjected to one-stage iron removal to remove iron-containing impurities close to the surface of the belt in the raw materials, and then undergo a second-stage iron removal to remove iron-containing impurities inside the raw materials; iron removal treatment steps and raw materials The raw material processing rate ...

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Abstract

The invention provides an unbleached pulp, and a preparation process, an application and a preparation device of the unbleached pulp, and relates to the technical field of pulping by utilizing a straw. The choices for the raw material of the unbleached pulp are wide, a wheat straw, a rice straw, a reed straw or a waste wood chip are used efficiently as the pulping raw material, so that the pulping cost is obviously lowered. The preparation process of the unbleached pulp uses the new technique to replace steam heating to soften the raw material, the problem of a pulp black liquor existing in the pulping process is solved while the heating cost is obviously reduced. The flow of the production process is simplified, the electricity and the water are efficiently saved, the resource utilization rate is effectively increased, and the production of no wastewater or waste materials is guaranteed in the production process. The special production process is used to pulp, the beating degree is high, the quality is better, the performance of a pulp product is stable, the pulp product is widely applied to the functional degradable material, and the functional applicability and the material quality are obviously strengthened in the application fields of preparation of corrugated paper, industrial packaging materials, preparation of plates, and preparation of tableware.

Description

technical field [0001] The invention relates to the technical field of straw pulping, in particular to a natural color pulp and its preparation process, application and preparation device. technical background [0002] Natural color pulp is due to the requirements of paper varieties, especially some cardboard and industrial technical papers do not need high whiteness, so as long as the pulp obtained by cooking is washed clean, the pulp that maintains its own color is natural color pulp. [0003] Natural pulp is mainly divided into natural straw pulp, natural bamboo pulp and natural wood pulp. Among them, natural straw pulp mainly uses various annual crop straws, such as corn straw, wheat straw, etc., as the main raw materials, which are convenient, environmentally friendly, low-carbon, and have a short raw material cycle. Natural bamboo pulp mainly uses bamboo as the main raw material, but due to the influence of growth period and transportation conditions, bamboo pulp cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/10D21H11/12D21C1/06D21B1/16D21B1/02D21C3/26D21C3/22
CPCD21H15/10D21B1/02D21B1/16D21C1/06D21C3/222D21C3/26D21H11/12
Inventor 宋美如闫文田
Owner 北京泽鑫荣创秸秆科技开发有限公司
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