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Continuous physical biological cleaning pulping method and pulping equipment

A technology for clean pulping and biological pulping, which is applied in pulp dewatering, fiber raw material treatment, washing/replacement of pulp treatment liquid, etc., and can solve the problems of high investment, high pollution, high consumption, etc.

Active Publication Date: 2021-01-05
王国忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Provide a continuous physical and biological cleaning pulping method and equipment, the purpose is to solve the problems of high investment, high consumption and high pollution in the existing chemical pulping process, improve pulp yield, and improve economic benefits

Method used

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  • Continuous physical biological cleaning pulping method and pulping equipment
  • Continuous physical biological cleaning pulping method and pulping equipment
  • Continuous physical biological cleaning pulping method and pulping equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The continuous physical biological cleaning pulping method and equipment, the method comprises the following steps:

[0030] Step 1: Raw material preparation includes: raw material crushing, moistening, corn stalks, reeds, cotton stalks, wheat straw, rice straw, asparagus, using a hammer crusher, crushing into strands, 5-50 mm long; tree branches Bud material raw materials are peeled, using a chipper, chipping, 3-5 mm thick, 5-45 mm long; moistening is to improve the quality of physical pulp made by the continuous pyrolysis cellulose pretreatment device, the moistening temperature is 50-60 ℃, moisten for 10-20 minutes, make it contain 30-35% water, and transport it to the feed port of ZL 2016 2 0821021.4 continuous pyrolysis cellulose pretreatment device.

[0031] Step 2: Use ZL 2016 2 0821021.4 continuous pyrolysis cellulose pretreatment device to make physical pulp, realize pulping without chemical additives and water boiling process, low energy consumption, continuou...

Embodiment 2

[0036] According to the continuous physical and biological cleaning pulping method and equipment device described in Embodiment 1, the biogas generated in Steps 3 and 5 is used for combined heat and power generation after desulfurization to meet the surplus of pulping production.

Embodiment 3

[0038] According to the continuous physical and biological cleaning pulping method and equipment device described in embodiment 1 or 2, the waste solids in step 4 and step 5 are made into organic fertilizer through aerobic fermentation, and high-temperature aerobic composting is adopted, with a heap height of 1.5 -2 meters, width 3-5 meters, water content 40-50%, fermentation temperature 50-59 ℃, oxygen content 8-15%, turn over every 3-5 days, fermentation cycle 15 days, carbon-nitrogen ratio reaches 5- The compost is mature at 6:1.

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Abstract

The invention discloses a continuous physical and biological cleaning pulping method and equipment, and overcomes the problems of high investment, high consumption and high pollution of the traditional chemical pulping process. The method includes the following steps: step I. raw material preparation: crushing and water wetting a raw material; step II. preparing physical pulp by adopting a continuous pyrolysis cellulose pretreatment device; step III. adopting a solid continuous anaerobic digester to anaerobically digest the physical pulp at one time; step IV. displacing and slurry washing; step V. secondary digesting the mixed biogas slurry by an IC anaerobic digester. The pulping method adopts the advanced continuous pyrolytic cellulose pretreatment device for pulping, does not use a chemical agent, and invents the solid continuous anaerobic digester, and thus the problem of continuous solid digestion of organic matters is solved, and the continuous physical and biological cleaning pulping method by continuously replacing an anaerobic tank with innovative equipment, continuously squeezing pulp with the innovative equipment by spiral pressing, and the IC anaerobic digester is formed.

Description

Technical field: [0001] The invention relates to the technical field of papermaking and pulping, in particular to a continuous physical and biological cleaning pulping method and equipment. Background technique: [0002] Pulping is the process of dispersing pulping raw materials into single fibers. The product obtained is called pulp, which is an indispensable raw material for papermaking. my country's paper industry is developing rapidly. Due to the lack of forest resources in our country, we are facing "resources, environment, The three major bottlenecks of "structure" have become an indisputable fact that affects the development of my country's paper industry. The supply of papermaking fiber raw materials is insufficient. In the next period of time, eliminating or breaking the situation that papermaking raw materials are heavily dependent on imports, improving the papermaking industry's ability to resist risks, developing alternative resources for wood pulp, and fully pulp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00D21C9/18D21C9/02
CPCD21C5/00D21C9/02D21C9/18
Inventor 王国忠王立来
Owner 王国忠