Graft polymer solution prepared by pulping waste liquor and preparation method

A technology of grafting polymers and pulping waste liquid, which is applied in the field of pulping waste liquid treatment, can solve the problems of high product cost and difficulty in large-scale promotion, and achieve the effects of low cost, pollution reduction and reuse

Inactive Publication Date: 2012-10-31
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some studies have made lignin sand-fixing materials that have a good control effect on desertified land, but because the purified industrial lignin is used, the product cost is high, and it is difficult to promote it on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of graft polymer solution prepared by pulping waste liquid of the present invention is made from the following components and raw materials in parts by weight: 0.5 parts of ethylene glycol diacrylate, 8 parts of montmorillonite, 30 parts of acrylic acid and mechanical 100 parts of slurry waste liquid.

[0025] Ammonium cerium nitrate is also added, and ammonium cerium nitrate accounts for 1% of the mass of acrylic acid.

[0026] The preparation method is:

[0027] 1) Add 3mol / L hydrochloric acid to the mechanical pulp waste liquid to adjust the pH of the waste liquid to 9;

[0028] 2) Add acrylic acid, ammonium cerium nitrate and montmorillonite in proportion to the above solution, and stir evenly;

[0029] 3) Add ethylene glycol diacrylate in proportion to the solution obtained in step 2), and stir for 3 hours to obtain a polymer solution.

Embodiment 2

[0031] A kind of graft polymer solution prepared by pulping waste liquid of the present invention is made from the following components and raw materials in parts by weight: 0.8 parts of ethylene glycol diacrylate, 15 parts of montmorillonite, 20 parts of acrylic acid and chemical 100 parts of mechanical pulp waste liquid.

[0032] Ammonium cerium nitrate is also added, and ammonium cerium nitrate accounts for 0.4% of the mass of acrylic acid.

[0033] The preparation method is:

[0034] 1) Add 2mol / L hydrochloric acid to the chemical-mechanical pulp waste liquid to adjust the pH of the waste liquid to 8;

[0035] 2) Add acrylic acid, ammonium cerium nitrate and montmorillonite in proportion to the above solution, and stir evenly;

[0036] 3) Add ethylene glycol diacrylate in proportion to the solution obtained in step 2), and stir for 2 hours to obtain a polymer solution.

Embodiment 3

[0038] A kind of graft polymer solution prepared by the pulping waste liquid of the present invention is made from the following components and raw materials in parts by weight: 0.5 parts of ethylene glycol diacrylate, 20 parts of montmorillonite, 45 parts of acrylamide and 100 parts of chemical pulp waste liquid.

[0039] Cerium ammonium nitrate is also added, and cerium ammonium nitrate accounts for 0.1% of the mass of acrylamide.

[0040] The preparation method is:

[0041] 1) Add 4mol / L hydrochloric acid to the chemical pulp waste liquid to adjust the pH of the waste liquid to 9.5;

[0042] 2) Add acrylamide, ammonium cerium nitrate and montmorillonite in proportion to the above solution, and stir evenly;

[0043] 3) Add ethylene glycol diacrylate in proportion to the solution obtained in step 2), and stir for 3.5 hours to obtain a polymer solution.

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Abstract

The invention belongs to the field of the processing of pulping waste liquor, and particularly relates to a graft polymer solution prepared by pulping waste liquor and a preparation method of the graft polymer solution. The graft polymer solution prepared from the pulping waste liquor is prepared from the following components in parts by weight: 0.2-1 part of diacrylate gylcol ester, 2-20 parts of imvite, 10-45 parts of crylic acid or acrylamide and 100 parts of pulping waste liquor, and also comprises ceric ammonium nitrate accounting for 0.1-1.5% of crylic acid or acrylamide. The preparation method has the steps of the pulping waste liquor, the diacrylate gylcol ester, the imvite and the crylic acid or acrylamide conforming to the proportion are subjected to graft polymerization reaction under the action of the ceric ammonium nitrate to obtain the graft polymer solution. According to the graft polymer solution and the preparation method, the pollution on the environment is reduced, the reutilization of the papermaking waste liquor is realized, the wastes are turned into wealth, the cost is low, and the economical benefits are generated.

Description

technical field [0001] The invention belongs to the field of pulping waste liquid treatment, in particular to a graft polymer solution prepared from pulping waste liquid and a preparation method. Background technique [0002] my country is short of wood fiber resources and mainly relies on imports, while my country is rich in grass straw resources. At present, many small and medium-sized enterprises still use grass fiber as an important papermaking raw material. Due to small scale and backward technology, the consumption of raw materials and energy is large, causing pollution. Difficult to control, the papermaking waste liquid of most enterprises has not been well treated and utilized, causing serious pollution to the ecological environment. Grass pulping waste liquid treatment is the top priority in the prevention and control of papermaking water pollution in my country. [0003] To control the pollution of straw pulp waste liquid, in addition to the alkali recovery measure...

Claims

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Application Information

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IPC IPC(8): C08F291/00C08F220/06C08F222/14C08H7/00C08B37/14
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