Assistant specially used in papermaking digesting technology

Abstract

The invention discloses an assistant specially used in a papermaking digesting technology. The assistant comprises, by mass, 50-100 parts of trifluoromethanesulfonic acid, 50-100 parts of paratoluenesulfonic acid, 20-30 parts of polyoxyethylene nonyl phenyl ether, 30-40 parts of a nonionic surfactant, 10-15 parts of styrylphenol polyoxyethylene ether, 10-15 parts of phenylethylphenol polyoxyethylene ether, 1-5 parts of an alpha-alkynol anthraquinone derivative, 2-5 parts of menadione, 5-10 parts of nonylphenyl polyoxyethylene ether, 5-8 parts of dodecyl polyoxyethylene ether, 5-10 parts of polyethylene glycol dodecyl phosphate, 3-5 parts of dioctadecyl phosphate, 5-10 parts of sodium silicate, 5-10 parts of 1,5-naphthalenedisulfonic acid disodium salt, 3-5 parts of sodium tripolyphosphate, 3-5 parts of sodium metaphosphate and 150-250 parts of water. The assistant specially used in a papermaking digesting technology shortens the digesting time of a pulp, obviously improves the drainability, improves the dispersion state of fibers, and improves the single stage bleaching degree.

Description

technical field [0001] The invention relates to the technical field of auxiliary agents used in the papermaking industry, in particular to a special auxiliary agent in the cooking process of papermaking. Background technique [0002] The existing commonly used papermaking cooking methods include caustic soda method, sulfate method, alkaline, neutral, sodium sulfite method, etc. Among them, sulfate method cooking is widely used because of its high pulp strength, but sulfate method Pulping has the disadvantages of serious corrosion of equipment, serious environmental pollution, difficult bleaching of slurry, and high cost of pulping. In the cooking process of pulp, in order to accelerate the de-lignification rate and protect cellulose and hemicellulose from degradation, papermakers have developed a variety of paper cooking aids. At present, soda sulfide, anthraquinone and their derivatives are generally used as pulp cooking aids in the paper industry, but because these cookin...

AI Technical Summary

Problems solved by technology

At present, soda sulfide, anthraquinone and their derivatives are generally used as pulp cooking aids in the paper industry, but because these cooking aids penetrate slowly into raw materials, the decomposition and dissolution of lignin take a long time, and the removed gum , lignin and resin are easily re-adsorbed by fibers, thus affecting the quality and yield of pulp

And these slurry cooking aids are all additives that will seriously pollute the environment, especially anthraquinone and its derivatives, which will cause serious harm to human health and easily cause teratogenicity, and these slurry cooking aids The cost is higher, which increases the production cost accordingly.