Deinking agent

A technology of deinking agent and surfactant, applied in the field of papermaking, can solve the problems of insufficient deinking agent performance, aggravating environmental pollution, poor deinking agent ability, etc., and achieves excellent operability, reduced pollution, and low residual ink amount. Effect

Inactive Publication Date: 2008-05-14
SHANDONG TAIYANGZHIYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional deinking agent only considers the deinking performance, and uses difficult-to-biodegrade surfactants containing benzene rings such as nonylphenol polyoxyethylene ether, which aggravates the pollution to the environment
[0005] Although the compounds used in some patents have excellent biodegradability, their performance as a deinking agent itself is very insufficient
[0006] On the other hand, with

Method used

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  • Deinking agent

Examples

Experimental program
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Effect test

Embodiment 1

[0031] To prepare 1 kg of this deinking agent, you need:

[0032] water 400g

[0033] Polyoxyethylene polyol ester 100g

[0034] Stearate 300g

[0035] Lauryl Sulfate 50g

[0036] Sodium Lignosulfonate 20g

[0037] Sodium silicate 20g

[0038] Sodium hydroxide 10g

[0039] Polyoxyethylene alkyl ether 100g

[0040] The above-mentioned chemicals are all purchased from the market, wherein polyoxyethylene polyol ester and polyoxyethylene alkyl ether are commercially available nonionic surfactants, and their consumption is calculated as 100%.

[0041] Start the mixer, and add the above-mentioned medicines into the mixer one by one, with an interval of 15 minutes after each raw material is cast, and the medicine will be in a slurry form after being completely dissolved. Stir for 20 minutes after all the medicines are dispensed and then discharge.

[0042] The formulated deinking agent remained stable within 6 months without delamination and had a pH of 9.

[0043] In the de...

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PUM

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Abstract

The invention relates to a special deinking agent for old newspaper (ONP), containing polyoxyethylene alkyl ether, polyoxyethylene polyol ester, fatty salt, lauryl sulfate, sodium lignosulfonate and inorganic matter; the deinking agent has good biodegradability, which greatly reduces environment pollution. As appropriate amount of foam can be maintained during processing, the deinking agent provides good practicability. High quality reclaimed pulp with high whiteness and low amount of residual printing ink can be obtained when the deinking agent is used. The deinking agent is liquid, usage and storage is convenient, and cost for deinking is low, thereby reducing processing cost.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a formula of a special deinking agent for old newspapers. Background technique [0002] Waste paper deinking is a new direction for the development of the paper industry in recent years. From the perspective of effective use of natural resources and environmental protection, the reuse of waste paper has become more important. Especially the deinked pulp of old newspapers is widely used in the production of newsprint, super calendered paper and other fields. [0003] In the production process of papermaking using secondary fiber, it is generally mixed with the following reagents for treatment: adding alkaline reagents such as sodium hydroxide, sodium silicate, etc., adding bleaching agents such as hydrogen peroxide, and chelating agents such as EDTA, and then adding as a dehydrating agent. One or more surfactants of the ink. There are two types of deinking agents: flotation ...

Claims

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Application Information

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IPC IPC(8): C09D9/04
Inventor 管全红李洪信
Owner SHANDONG TAIYANGZHIYE
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