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Waste paper deinking agent

A waste paper deinking and active agent technology, which is applied in processing waste paper, chemical paint/ink remover, paper making, etc., can solve the problem of unsatisfactory waste paper deinking technology, uneven product performance, waste paper pulping ash Advanced problems, to achieve the effect of strong reusability, rich ingredients, and low pollution

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 waste paper deinking agent is made up of the following raw materials in parts by weight:

[0021] Non-ionic surfactant 42%, lipase microcapsule 36%, excipient 22%.

[0022] A kind of preparation method of waste paper deinking agent, preparation process comprises the following steps:

[0023] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2%, add lipase at a mass concentration of 10%, and stir evenly;

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

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

[0026] (4) Prepare lipase microcapsules by emulsification method, collect lipase microcapsul...

Embodiment 2

[0031] A waste paper deinking agent is made up of the following raw materials in parts by weight:

[0032] Non-ionic surfactant 41%, lipase microcapsule 37%, excipient 22%.

[0033] A kind of preparation method of waste paper deinking agent, preparation process comprises the following steps:

[0034] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2.3%, add lipase at a mass concentration of 13%, and stir evenly;

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

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

[0037] (4) Prepare lipase microcapsules by emulsification method, collect lipase microcapsules, an...

Embodiment 3

[0042] A waste paper deinking agent is made up of the following raw materials in parts by weight:

[0043] Non-ionic surfactant 40%, lipase microcapsule 37%, excipient 23%.

[0044] A kind of preparation method of waste paper deinking agent, preparation process comprises the following steps:

[0045] (1) Prepare sodium alginate into an aqueous solution with a mass concentration of 2.5%, add lipase at a mass concentration of 15%, and stir evenly;

[0046] (2) Dissolve chitosan in 1% acetic acid solution, prepare a mass concentration of 0.8%, adjust the pH to 5.6, stir to completely dissolve the chitosan, and add calcium chloride to the chitosan solution to make the chlorine The mass concentration of calcium chloride is 2%, stir until completely dissolved;

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

[0048] (4) Prepare lipase microcapsules by emulsification method, collect lipase microcapsul...

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PUM

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Abstract

The invention discloses a waste paper deinking agent. The waste paper deinking agent is composed of, by weight, 40%-50% of a non-ionic surface active agent, 35%-40% of lipase microcapsules and 20%-30% of auxiliary materials. The waste paper deinking agent is suitable for deinking treatment of waste corrugated paper, waste newsprint, colored offset newsprint, paper of waste books and magazines, office waste paper and laser and electrostatic copying paper. Microencapsulation is conducted on lipase, preparation is easy, the stability is strong, when the microcapisulazed lipase is added in a chemical deinking agent, the activity of the lipase is maintained, the chemical deinking agent is rich in components, and dosing is scientific; after waste paper pulp is added, the lipase is slowly released, deinking can be conducted by using a chemical method and a biological method simultaneously, the waste paper deinking effect is good, the whiteness is high, the dirt count is small, fibers are soft, the reutilization performance is strong, the degree of contamination of sewage in the later period is small, the treatment is easy, the cost is reduced, and the environment is protected.

Description

technical field [0001] The invention mainly relates to a 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 shrinking of social resources, the recycling of waste paper has received unprecedented attention, and various waste paper recycling technologies have emerged in an endless stream. Among them, the use of waste paper to produce high-quality living and 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 treatment of waste paper is a key link in the pulping process of waste paper. [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...

Claims

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Application Information

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IPC IPC(8): C09D9/04D21C5/02
CPCY02W30/64
Inventor 林悦敏
Owner HEFEI LONGFA PACKING CO LTD
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