Method for producing fatty acid amide defoaming agent for papermaking

Abstract

The invention provides a method for producing a fatty acid amide defoaming agent for papermaking. The produced product is a fatty acid amide synthetic defoaming agent and has the characteristics of no toxicity, good fluidity and low price. The defoaming agent is mainly used for alkaline pulping and papermaking processes in the papermaking industry. The use conditions in recent years show that the fatty acid amide defoaming agent has good defoaming and foam inhibiting effects, is simple and convenient to operate and has high pulp yield and quality in the alkaline pulping and papermaking processes. The following raw materials are used for producing the product: ethylene distearamide, diethylene glycol mono-oleate, mineral oil, silica, sodium carbonate, oxidized polyethylene and calcium stearate.

Description

Technical field: [0001] The product of the invention belongs to the field of chemical papermaking. Background technique: [0002] In the pulp and paper industry, foam handling is a difficult problem in production. From the operation of the pulping unit after steaming ball discharge to the coating process (washing, filtering, bleaching, dehydration, papermaking, sizing, coating, etc.), there are different degrees of foam, which seriously affects Normal production and paper quality. Therefore, people adopt many methods to eliminate the foam of the pulp system, such as chemical method, physical method, mechanical method, etc. Among them, the chemical method is the most widely used in the paper industry. Special surfactants, namely defoamers, are used to control foam. This type of substance has strong surface activity, which can replace or destroy the foaming agent in the production system, reduce the surface tension, and make it impossible to form a strong foam film, resultin...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of traditional mineral oil, sulfonated vegetable oil, alcohol and other defoaming agents with poor surface activity, low defoaming efficiency, narrow application range, and unsuitability for mo...