Anionic trash catcher

Abstract

The invention relates to an anionic trash catcher which is composed of following components, by weight, 0.4-6 parts of polyacrylamide, 0.3-6 parts of aluminum sulfate, 0.3-8 parts of polyethyleneimine, 0.1-0.8 parts of polydiallyldimethylammonium chloride and 0.4-7 parts of N-carboxymethylmethacrylamide. A high-molecular-weight high-positive-charge-density modified polyacrylamide-polyethyleneimine crosslinked copolymer novel anionic trash catcher can be employed in a situation that anionic trash accumulation and concentration is higher and higher since wet-end chemistry is quite complex due to increased closed circulating degree in paper machine white water and can reduce or eliminate interference by colloid solutes.

Description

technical field [0001] The invention relates to the technical field of papermaking auxiliary agents, in particular to an anionic garbage catcher. Background technique [0002] At present, with the change of papermaking raw materials and the shortage of raw pulp, a large number of recycled paper pulps are used, which makes the high-yield pulp of fine particles and hemicellulose and deinked waste paper pulp and a large number of applications of broken paper from paper machines, as well as the maintenance of paper machine systems. The white water is fully closed and recycled, and the accumulation of interfering anion garbage impurities in the wet part of the paper machine will increase the concentration of impurities and the concentration of white water, and the harm to the paper machine will become greater and greater, especially in the papermaking process. The additives are lost into the system, and the accumulation of anion garbage is more serious. The increase of white wat...

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Problems solved by technology

Although there is a good improvement in the adsorption balance of cationic garbag

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