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Fast appraisement method for waste paper-pulp gummy substance control effect

A sticky matter control and evaluation method technology, applied in the field of rapid evaluation of waste paper pulp sticky matter control effect, can solve the problems of poor repeatability, complicated operation, expensive equipment, etc., and achieve the effect of fast measurement speed and simple operation

Inactive Publication Date: 2009-08-05
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quantitative analysis methods that have been developed or tried at present include the screening method for large stickies (stickies that cannot pass through a 150 μm sieve and are retained) and the hand-written sheet detection method, and the detection method for micro stickies (those that can pass through a 150 μm sieve). Sieve sticky matter) adsorption method, plate attachment method, extraction method, laser particle counting method, hemocytometer counting method, destabilizer precipitation method and press dehydration precipitation method, etc., but these methods exist or use large amount of slurry, or complex operation, or expensive equipment, or poor repeatability, etc.

Method used

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  • Fast appraisement method for waste paper-pulp gummy substance control effect
  • Fast appraisement method for waste paper-pulp gummy substance control effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Highly substituted cationic starch and high substituted cationic guar gum control waste paper deinking and bleaching pulp stickies

[0021] The waste paper pulp used in the experiment was taken from the pulp storage tank of a newsprint production line in a paper mill. The waste paper pulp had gone through processes such as pulping, flotation deinking, hydrogen peroxide bleaching, and heat dispersion, but no wet-end additives had been added. Predetermine its pulp concentration (generally 3%-5%), weigh 100g of this waste paper pulp, place it in a beaker, add high substitution cationic starch and high substitution cationic guar gum with substitution degrees of 0.94 and 0.30 respectively, After stirring for 3 minutes, dilute the waste paper pulp sample to 500g with distilled water, and then filter with a 200 mesh (74 μm) filter screen. The filtrate A is collected in a beaker, and then filtered with a solvent filter equipped with a glass fiber microfiltration membrane (microf...

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PUM

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Abstract

The invention belongs to the pulp and paper making field and particularly relates to a method for rapidly assessing the waste paper pulp adhesive substance control effect. The method for rapidly assessing the waste paper pulp adhesive substance control effect is characterized in that after the waste paper pulp is filtered and intercepted, the content of the intercepted substance, the cation demand, the turbidity and the chemical oxygen demand (COD) of waste paper pulp filtrate can be measured at the same time. The invention is suitable for selecting waste paper pulp adhesive substance control agent / system and assessing the effect thereof and has the advantages of easy operation, rapid measurement speed, and the like.

Description

technical field [0001] The invention belongs to the pulp and paper industry, in particular to a rapid evaluation method for the control effect of waste paper pulp stickies. Background technique [0002] Sticky matter control is a major difficulty in the process of waste paper recycling. Stickies refer to the viscous, soft and hydrophobic organic substances that appear in the process of waste paper recycling, mainly derived from tapes and label adhesives, hot melt adhesives, etc. Glue, wax, ink binder, latex, wet-strength resin and other polymers, the accumulation of which will have a great adverse effect on the continuous operation of the paper machine and paper quality, while adding other functional papermaking additives and process properties Consumption of papermaking aids. Solving the problem of the deposition of waste paper pulp stickies is an important direction of current wet-end chemical research. At present, there are many methods such as physical treatment, chem...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N27/60G01N15/06G01N31/22
Inventor 王立军罗灵芝查瑞涛
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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