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Preparation process of flax natural-color semi-chemimechanical pulp

A technology of chemical machinery and preparation technology, which is applied in textiles and papermaking, fiber raw material treatment, fiber raw material, etc., and can solve problems such as low pulp yield and large pollution load

Inactive Publication Date: 2015-07-01
XINJIANG GUOLIYUAN INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main method of producing flax pulp is chemical method, such as sulfite method, but the disadvantage of this method is that the pulp yield is low and the pollution load is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Cut the flax into 35-50mm material section, then send it to the double-drum washing machine for washing and removing impurities, and then send it to the steam chamber by the screw dehydrator, under normal pressure, temperature 90-95°C, pretreatment for 30min , to fully impregnate;

[0014] (2) The material obtained in step (1) is sent to the twin-screw thread rolling machine by the screw conveyor, and 5% NaOH and 1% AQ are added in the thread rolling machine according to the absolute dry material weight, and then sent to the reaction after rolling Stand in the warehouse for 40 minutes;

[0015] (3) After the standing reaction, the material is reverse-washed with a two-stage pulping machine, washed and sent to a high-consistency refiner for high-consistency refining (pulp concentration 25-30wt%), and then sent to Put it into a hydropulper for latent elimination (the pulp concentration is 4-5wt%, and the time is about 10 minutes), and the natural color semi-chemical ...

Embodiment 2

[0017] (1) Cut the flax into 35-50mm material section, then send it to the double-drum washing machine for washing and removing impurities, and then send it to the steam chamber by the screw dehydrator, under normal pressure, temperature 90-95℃, pretreatment for 50min , to fully impregnate;

[0018] (2) The material obtained in step (1) is sent to the twin-screw thread rolling machine by the screw conveyor, and 4.5% NaOH and 1.5% AQ are added to the thread rolling machine according to the absolute dry material weight, and then sent to the reaction after rolling Stand in the warehouse for 45 minutes;

[0019] (3) After the standing reaction, the material is reverse-washed with a two-stage pulping machine, washed and sent to a high-consistency refiner for high-consistency refining (pulp concentration 25-30wt%), and then sent to Put it into a hydropulper for latent elimination (the pulp concentration is 4-5wt%, and the time is about 15 minutes), and the natural color semi-chemic...

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PUM

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Abstract

The invention discloses a preparation process of flax natural-color semi-chemimechanical pulp. The process comprises the following steps: (1) cutting a flax into sections with the length of 35-50mm, washing and removing impurities, feeding into a vapor steaming bin for performing pretreatment for 30-50 minutes at the temperature of 90-95 DEG C under constant pressure; (2) feeding the materials obtained in the step (1) into a thread rolling machine, and after thread rolling, standing for 30-50 minutes, wherein according to the weight of over-dry materials in the thread rolling machine, 4-6 percent of NaOH and 1-1.5 percent of anthraquinone are added; and (3) sequentially performing pulp washing, high-concentration pulp grinding and latency on the materials obtained in the step (2) to obtain the flax natural-color semi-chemimechanical pulp. Compared with an existing flax pulp preparation process, the preparation process provided by the invention has the advantages of high yield rate and small pollution load.

Description

technical field [0001] The invention belongs to the field of papermaking, and in particular relates to a preparation process of flax natural color semi-chemical mechanical pulp. Background technique [0002] Flax raw material is an ideal raw material for producing cigarette paper. The cigarette paper produced with it has the characteristics of high air permeability, good combustibility, soft and delicate paper, gray and white, and no peculiar smell. [0003] At present, the main method of producing flax pulp is chemical method, such as sulfite method, but the disadvantage of this method is that the pulp yield is low and the pollution load is large. Contents of the invention [0004] The purpose of the present invention is to overcome the existing shortcomings in the preparation of the existing flax pulp, and to provide a preparation process of the natural color semi-chemical mechanical pulp of flax. [0005] The technical scheme that the present invention adopts for reali...

Claims

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Application Information

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IPC IPC(8): D21C1/02D21B1/16
CPCD21C1/02D21B1/16
Inventor 腾铁生张跃平
Owner XINJIANG GUOLIYUAN INVESTMENT