Effective waste paper deinking agent

A waste paper deinking and high-efficiency technology is applied in the field of papermaking, which can solve the problems that the waste paper deinking technology cannot be satisfied, the product performance is uneven, and the ink removal efficiency is low, so as to achieve strong reusability and good deinking effect. , the effect of rich ingredients

Inactive Publication Date: 2015-11-25
HEFEI LONGFA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing various deinking agents have different product performance due to different waste paper raw materials or their own production technology level, and the removal efficiency of ink is generally low, or some deinking agents are in production. Too much talcum powder and other inorganic fillers are added in the process, resulting in too high ash content of waste paper pulp after deinking treatment, which is not conducive to further bleaching treatment, or is not conducive to the improvement of pulp grade
At the same time, due to the continuous improvement of the quality of printing inks, many existing waste paper deinking agents can no longer meet the requirements of the existing waste paper deinking technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-efficiency waste paper deinking agent is composed of the following raw materials in parts by weight:

[0021] 40% of surfactants, 40% of enzymatic microcapsules, and 20% of excipients.

[0022] A preparation method of a high-efficiency waste paper deinking agent, the preparation process comprises the following steps:

[0023] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2%, add lipase and cellulase, the mass concentration is 12%, the weight ratio of lipase and cellulase is 1:2, and stir well;

[0024] (2) Dissolve chitosan in 1% acetic acid solution, prepare a mass concentration of 0.6%, adjust pH to 5.2, stir to completely dissolve chitosan, add calcium chloride to the chitosan solution to make chlorine The mass concentration of calcium chloride is 1.5%, stirring until completely dissolved;

[0025] (3) Add the emulsifier Span80 to the liquid paraffin, prepare the emulsifier with a mass concentration of 4%, and stir evenly;...

Embodiment 2

[0031] A high-efficiency waste paper deinking agent is composed of the following raw materials in parts by weight:

[0032] Surfactant 39%, enzymatic microcapsules 40%, excipients 21%.

[0033] A preparation method of a high-efficiency waste paper deinking agent, the preparation process comprises the following steps:

[0034] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2.3%, add lipase and cellulase, the mass concentration is 14%, the weight ratio of lipase and cellulase is 1:2, and stir well;

[0035] (2) Dissolve chitosan in 1% acetic acid solution, prepare a mass concentration of 0.7%, adjust pH to 5.4, stir to dissolve chitosan completely, add calcium chloride to the chitosan solution to make chlorine The mass concentration of calcium chloride is 1.7%, stirring until completely dissolved;

[0036] (3) Add the emulsifier Span80 to the liquid paraffin, prepare the emulsifier with a mass concentration of 4%, and stir evenly;

[0037] (...

Embodiment 3

[0042] A high-efficiency waste paper deinking agent is composed of the following raw materials in parts by weight:

[0043] 40% of surfactants, 39% of enzymatic microcapsules, and 21% of excipients.

[0044] A preparation method of a high-efficiency waste paper deinking agent, the preparation process comprises the following steps:

[0045] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2.5%, add lipase and cellulase, the mass concentration is 15%, the weight ratio of lipase and cellulase is 1:2, and stir well;

[0046] (2) Dissolve chitosan in 1% acetic acid solution, prepare a mass concentration of 0.8%, adjust pH to 4, stir to completely dissolve chitosan, add calcium chloride to the chitosan solution to make chlorine The mass concentration of calcium chloride is 2%, stir until completely melted;

[0047] (3) Add the emulsifier Span80 to the liquid paraffin, prepare the emulsifier with a mass concentration of 4%, and stir evenly;

[0048...

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PUM

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Abstract

The invention discloses an effective waste paper deinking agent. The effective waster paper deinking agent is composed of, by weight, 38%-45% of surfactant, 38%-45% of enzyme-coated microcapsules and 20%-30% of auxiliaries. The effective waste paper deinking agent is suitable for being used for conducting deinking treatment on waste corrugated paper, waste news paper, color offset printing news paper, waste book and magazine paper, waste office paper and laser and electrostatic printing paper; lipase and cellulase are prepared into microcapsules through an emulsifying method, the preparation process is simple, stability is high, the activity of enzyme can be kept for a long time by adding the microcapsules into the chemical deinking agent, the chemical deinking agent is rich in ingredients and scientific in matching, the lipase and the cellulase are released slowly after waste paper pulp is added, deinking can be conducted through a chemical method and a biological method, the deinking effect on waste paper is good, whiteness is high, speckiness is low, the fiber is soft, reusability is high, the pollution degree caused by sewage generated in the later period is low, processing is simple, the cost is saved, and pollution to the environment is avoided.

Description

technical field [0001] The invention mainly relates to a high-efficiency waste paper deinking agent, which belongs to the technical field of papermaking. Background technique [0002] With the enhancement of people's awareness of environmental protection and the tightening of social resources, the reuse of waste paper has received unprecedented attention, and various waste paper recycling technologies have emerged one after another. Among them, the use of waste paper to produce high-quality household production paper has always been the development direction of waste paper utilization technology. In the process of producing high-quality paper pulp from waste paper, necessary or sufficient deinking of waste paper is a key link in the process of waste paper pulping. [0003] Various existing deinking agents have different product performance due to different waste paper raw materials or their own production technology level and other factors, the removal efficiency of ink is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04
Inventor 林悦敏
Owner HEFEI LONGFA PACKING CO LTD
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