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Pulping method for waste Renminbi

A RMB and pulping technology, which is applied in the field of papermaking and pulping, can solve the problems of pulp fibers that are difficult to disperse, cannot be well utilized, and the smoothness of the paper surface is low, and achieve low cost, stable cooking quality, uniformity and high yield. The effect of high slurry rate

Inactive Publication Date: 2013-05-15
MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, most of the waste RMB is used after mechanical beating. The pulp fibers obtained in this way are difficult to loosen and contain a large number of fiber bundles, resulting in low smoothness of the paper surface and many blisters, which cannot be well utilized.

Method used

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  • Pulping method for waste Renminbi

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Effect test

Embodiment Construction

[0021] The invention uses waste RMB as raw material, adopts caustic soda anthraquinone method to make pulp, and selects equipment as steaming balls. Cooking and bleaching process parameters are as follows in the method:

[0022]

[0023] When cooking liquid configuration

[0024] 1. According to the amount of alkali used for cooking, the liquid ratio, and the concentration and volume of the cooking liquid.

[0025] 2. After determining the concentration and volume, use the white liquor produced by alkali recovery and purchased caustic soda in a ratio of 7:3 for preparation.

[0026] 3. The temperature of the cooking liquid must be heated to 80-85°C.

[0027] 4. Add the prepared cooking liquid to the spiral prepreg and stir evenly with the waste RMB before loading.

[0028] 5. Before heating up, it must be idling before heating up, and the temperature can be raised rapidly according to the heating time and steam pressure.

[0029] 6. After bleaching, the whiteness of the...

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Abstract

The invention relates to a pulping method for waste Renminbi. The method adopts a caustic soda-anthraquinone pulping method. The process comprises stewing and bleaching, wherein alkali charge is controlled between 18% to 20% in the stewing, liquor ratio is 1:3.5-4.5, the stewing liquor temperature is 80 DEG C to 85 DEG C, and before the temperature rises, idling for 30 min, then rising temperature, and rising the temperature according to the temperature rising time and vapor pressure. By the adoption of the caustic soda-anthraquinone pulping method, the waste Renminbi is carried out by pulping, and the waste Renminbi can be fully resolved through controlling the stewing parameters, so that the pulping method for the waste Renminbi can be effectively used in papermaking system. Evenness of pulp got and full stuff efficiency are high, stewing quality is stable, and meanwhile usage amount of chemical materials is small and various energy consumptions are low, process investment is small, and the cost is low. The pulping method for the waste Renminbi achieves the recycle of waste resource, and meanwhile provides a novel pulp to the paper technology. The pulp of the process can be used for manufacturing specialty paper, and the pulping method for the waste Renminbi has a certain promotional value.

Description

technical field [0001] The invention relates to the technical field of papermaking and pulping, in particular to a pulping method for waste and old RMB. Background technique [0002] In the prior art, waste and old RMB are mostly used after mechanical beating. The pulp fibers obtained in this way are difficult to loosen and contain a large number of fiber bundles, resulting in low smoothness of the paper surface and many blisters, which cannot be well utilized. Contents of the invention [0003] The object of the present invention is to overcome the defects of the above-mentioned prior art, and provide a pulping method for waste RMB that can fully decompose the waste RMB and effectively utilize it in the papermaking system. [0004] The technical scheme adopted for realizing the above-mentioned purpose of the invention is: [0005] A pulping method for waste RMB, which is characterized in that the caustic soda-anthraquinone pulping method is adopted, and the process inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/32D21C5/02
CPCY02W30/64
Inventor 张军张永峰李清阳裴刚段成兵董学荣
Owner MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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