Method for controlling with 100aste newsprint paper deinked pulp esterase

A technology of newsprint and ink pulp ester, which is applied in the field of environment and resources, can solve the problems of complex components of stickies and not necessarily obvious effects of chemical fixatives, etc., and achieve the effect of increasing vehicle speed and output, and enhancing operating performance

Inactive Publication Date: 2008-07-16
GUANGDONG IND TECHN COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The chemical fixing agent method can passivate the adhesive, but the composition of the adhesive is more complicated, and the effect of the chemical fixing agent often added is not necessarily obvious

Method used

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  • Method for controlling with 100aste newsprint paper deinked pulp esterase
  • Method for controlling with 100aste newsprint paper deinked pulp esterase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Adopt Optimyze525 enzyme product of Buckman company to produce 45g / mm in 100% ONP (waste newsprint) deinking pulp 2 Control of newsprint stickies.

[0028] (1) Waste newsprint (8# American waste paper 55%, waste forest paper 8%, European waste paper 13%, domestic waste paper 16%, 10# American waste paper 8%) mix evenly, then crush in a beater Pulp, control pulp concentration 15%, get 100% waste newsprint deinking pulp, then add NaOH 0.6%, NaOH 2 SiO 3 2.0%, H 2 o 2 0.4%, industrial soap 0.5%, deinking agent GOD1230 (Kunshan Zhongxuan Chemical Factory) 0.035%, adjust the pH value to 6.5, control the temperature at 50°C, and grind for 30 minutes to obtain a pulp solution.

[0029](2) above-mentioned pulping solution controls pulp concentration 12% in high concentration desander successively; Control pulp concentration in coarse stock pool is 3.5%; Control pulp concentration in coarse screen is 3.5%, inlet pressure is 250kPa, outlet pressure 110kPa; control the pulp...

Embodiment 2

[0043] (1) waste newsprint (55% of 8# American waste paper, 8% of waste forest paper, 13% of European waste paper, 16% of domestic waste paper, 8% of 10# American waste paper) mix well, and pulp in the beater , pulp concentration 16%, get 100% waste newsprint deinking pulp, then add NaOH 0.7%, NaOH 2 SiO 3 2.2%, H 2 o 2 0.6%, industrial soap 0.55%, deinking agent GOD1230 (Kunshan Zhongxuan Chemical Factory) 0.035%, the pH range is 10, the temperature is controlled at 60° C., and the pulping time is 45 minutes; a pulping solution is obtained.

[0044] (2) above-mentioned pulping solution controls pulp concentration 15% in high concentration desander successively; Control pulp concentration in coarse stock pool is 5%; Control pulp concentration in coarse screen is 3.0%, inlet pressure is 280kPa, outlet pressure 120kPa; control the pulp concentration to 1.2% in the front flotation tank, add industrial soap 0.09%; control the pulp concentration to 1.2% in the heavy slag remov...

Embodiment 3

[0052] (1) waste newsprint (55% of 8# American waste paper, 8% of waste forest paper, 13% of European waste paper, 16% of domestic waste paper, 8% of 10# American waste paper) mix well, and pulp in the beater , pulp concentration 18%, get 100% waste newsprint deinking pulp, then add NaOH 0.75%, NaOH 2 SiO 3 2.5%, H 2 o 2 1.0%, industrial soap 0.6%, deinking agent GOD1230 (Kunshan Zhongxuan Chemical Factory) 0.035%, the pH range is 8, the temperature is controlled at 55° C., and the pulping time is 40 minutes; a pulping solution is obtained.

[0053] (2) above-mentioned pulping solution controls pulp concentration 13% in the high-concentration desander successively; Control pulp concentration in coarse stock pool is 4%; Control pulp concentration in coarse screen is 5.0%, inlet pressure is 260 kPa, The outlet pressure is 115kPa; the pulp concentration is controlled at 1.5% in the front flotation tank, and 0.1% of industrial soap is added; the pulp concentration is controll...

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Abstract

The invention discloses a method that uses esterase obtained by 100 percent deinking and desizing of wasted newspaper controls sticky which mainly aims at producing the low fixed amount newspaper by using the 100 percent deinking and desizing of the wasted newspaper, adopts Optimyze 525 esterase control sticky and produces the newspaper with 45g/mm<2> fixed amount. The invention has the advantages of reducing the dosage of the sticky in the paper pulp, leading the sticky removing rate to be about 20 percent to 40 percent, reinforcing the operating performance of a paper machine, and helping to improve the speed and the output of the paper machine; by adopting deinking and desizing of 100 percent wasted newspaper to make 45g/m<2> lowing amount offset newsprint, the obtained products have good quality, chemical pulp and groundwood pulp which are high in pollution and high consumption are eliminated, the manufactory cost of the pulp material and the processing cost of the water are reduced, and the discharged waste water and the pollutants are reduced.

Description

technical field [0001] The invention belongs to the technical field of environment and resources, and particularly relates to a method for controlling stickies by biological enzyme method of 100% waste newsprint deinked pulp. Background technique [0002] Stickies are generally divided into two categories, one is natural stickies such as resins; the other is recycled stickies, which are viscous substances mainly derived from recycled fibers, and most of them have negative charges. Recycled stickies are generally composed of adhesives in paper stock, hot melt adhesives, labels, bookbinding glue, tape, latex, ink adhesives, wet strength resins and other polymers. According to particle size, it can be divided into large stickies and fine stickies. Large stickies can be removed by selection, purification and flotation. Fine stickies are mainly substances that exist in the system in a dissolved or colloidal state (Dissolved and Colloidal Substances referred to as DCS). With the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/02D21B1/34D21H17/64D21H17/66D21H17/63D21D5/00D21C9/18C12S3/08
CPCY02W30/64
Inventor 张赣霞郭纬李小玲林润惠李小红陈坤亭曾丽美龙治军吴敏仪
Owner GUANGDONG IND TECHN COLLEGE
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