Preparation method of green and environment-friendly efficient de-inking agent

Abstract

The invention discloses a preparation method of a green and environment-friendly efficient de-inking agent and belongs to the technical field of wastepaper de-inking. The green and environment-friendly efficient de-inking agent prepared by the method does not contain an alkylphenol polyoxyethylene ether type component which has poor biodegradability and is not environmentally friendly. The de-inking agent disclosed by the invention is formed by compounding anacardol polyoxyethylene ether synthesized by a natural product anacardol, fatty alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether sulfate of natural fatty alcohol, linear-alkylbenzene sulfonate with good biodegradability and diatomite. The obtained de-inking agent has good biodegradability and is green and environmentally friendly, has good penetration, emulsification, washing and adsorption effects and has a good de-inking effect, so that the de-inking agent is one green and efficient environment-friendly type de-inking agent.

Description

technical field [0001] The invention relates to a preparation method of a green, environment-friendly and high-efficiency deinking agent, belonging to the technical field of waste paper deinking. Background technique [0002] In recent years, with the continuous reduction of the earth's forest resources and people's increasing emphasis on environmental protection, secondary fiber has become an important fiber source in the paper industry worldwide. It has become more and more common behavior to use waste paper as an important papermaking raw material and improve the recycling rate of waste paper. [0003] Waste paper pulping has a series of advantages, such as reducing pollution and saving resources. However, in the process of deinking and recycling waste paper, there are also a series of problems such as poor product quality and certain impact on the ecological environment. Therefore, it is particularly important to develop a green and efficient waste paper deinking agent ...

AI Technical Summary

Problems solved by technology

Most of the commonly used deinking agents on the market now only consider the deinking effect, and use substances with poor biodegradability, which are not easy to be disposed of after use, and form long-term residues in the environment, affecting the ecological environment

Although the materials used in some patents have better biodegradability, the deinking effect is not very satisfactory.

[0005] The existing alkylphenol polyoxyethylene ether is one of the non-ionic surfactants commonly used in deinking products, but it is highly irritating and remains in the environment for a long time, causing environmental pollution, so it is explicitly ordered in many developed countries Prohibited Products

Chinese patent document CN104710853.A discloses a kind of high-efficiency deinking agent for mixed waste paper; Chinese patent CN105062190A discloses a kind of waste paper pulping deinking agent and its preparation method; Chinese patent document CN104804513A discloses a kind of deinking agent; these All deinking agents contain substances with poor biodegradability such as alkylphenol polyoxyethylene ethers, which do not meet the requirements of contemporary green environmental protection

Chinese patent CN105295509A discloses a biological deinking agent; Chinese patent CN104789033A discloses an energy-saving and environment-friendly deinking agent; although these deinking agents are green and environmentally friendly and have good biodegradability, the deinking effect is general