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Clean pulping catalyst and application technology thereof

A technology for cleaning pulping and catalysts, which is applied in the fields of cellulose raw material pulping, pulp beating/refining method, non-woody plant/crop pulp, etc., can solve the problems of wheat straw pulping pollution, economic loss, and wheat straw waste, etc. Achieve the effect of simple components, convenient drinking and short soaking time

Inactive Publication Date: 2018-06-08
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, due to the serious pollution of wheat straw pulping in my country, 90% of the wheat straw pulping production lines have been shut down, a large number of pulping equipment have been left idle, and wheat straw has been wasted, causing huge economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] The pulping raw materials include the following raw materials and parts by weight: 35 parts of wood, 15 parts of wheat straw, 20 parts of rice straw, 5 parts of reeds, and 10 parts of bamboo; 9 parts of the catalytic solvent; 5 parts of the solid catalyst agent; 1 part of said preservative.

[0026] The production process steps are as follows:

[0027] a. Weigh the above raw materials according to the weight in grams;

[0028] b. Drying and crushing of the pulping raw materials: the said raw materials are sent into the roasting machine in batches, and the roasting time is controlled at about 7-15 minutes according to the humidity of the different components, and the roasting is complete. Yes; raw material crushing: the roasted raw materials are sent to the grinder in batches, using 60-100 mesh screens for crushing;

[0029] c. Pour the catalytic solvent into step b sequentially, and mix and stir after immersing for 12 to 18 hours, and control the temperature to 65°C and the ti...

Embodiment 2

[0038] The pulping raw materials include the following raw materials and parts by weight: 20 parts of wood, 35 parts of wheat straw, 15 parts of rice straw, 10 parts of reeds, 5 parts of bamboo; 9 parts of the catalytic solvent; 5 parts of the solid catalyst agent; 1 part of said preservative.

[0039] The production process steps are as follows:

[0040] a. Weigh the above raw materials according to the weight in grams;

[0041] b. Drying and crushing of the pulping raw materials: the said raw materials are sent into the roasting machine in batches, and the roasting time is controlled at about 7-15 minutes according to the humidity of the different components, and the roasting is complete. Yes; raw material crushing: the roasted raw materials are sent to the grinder in batches, using 60-100 mesh screens for crushing;

[0042] c. Pour the catalytic solvent into step b sequentially, and mix and stir after immersing for 12 to 18 hours, and control the temperature to 65°C and the time w...

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Abstract

The invention discloses a clean pulping catalyst and an application technology thereof. The clean pulping catalyst comprises 85% of pulping raw materials, 9% of catalytic solvent, 5% of solid catalyzer and 1% of preservative. The catalytic solvent is a mixed solution by mixing one aqueous solution of NaOH, KOH, Ca(OH)2, Na2CO3, K2CO3, NaHCO3, KHCO3 and Na2SiO3, of which the weight percentage concentration is 5-30% with an EDTA aqueous solution with the weight percentage concentration of 1-10% according to the weight ratio of 1:1; the solid catalyzer comprises an oxygen stabilizer and an additive, and the oxygen stabilizer comprises a mixture of one or two or more kinds of DMD, hydrogen peroxide, performic acid, peracetic acid, perpropionic acid, ozone, MgSO4 and MgC12 according to a randomproportion; the additive comprises ferrous sulfate and sodium sulfite. According to the technology, no waste medicine liquid is discharged, no waste water is discharged, and the technology is beneficial to environmental protection and has high innovation value in the papermaking industry.

Description

Technical field [0001] The invention relates to the technical field of pulping and papermaking, in particular to a clean pulping catalyst and its application process. Background technique [0002] At present, due to serious pollution in wheat straw pulping in our country, 90% of wheat straw pulping production lines have been shut down, a large number of pulping equipment has been idled, and wheat straw has been wasted, causing huge economic losses. my country is rich in resources of gramineous plants, which are good raw materials for papermaking and an indispensable papermaking fiber. Gramineous plants include wheat straw, rice straw, cotton stalk, reed, bamboo and so on. Before the 20th century, wheat straw was the main fiber source for papermaking in my country. After entering the 21st century, the use of wheat straw fiber became less and less, mainly caused by the pollution of wheat straw pulping. As a result, my country imports a large amount of waste paper as a source of f...

Claims

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Application Information

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IPC IPC(8): D21B1/06D21C3/22D21D1/20D21D5/02D21H11/12
CPCD21B1/06D21C3/222D21D1/20D21D5/02D21H11/12
Inventor 王守娟刘忠明孔凡功赵鑫夏南南陈洪雷刘玉
Owner QILU UNIV OF TECH
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