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Method for producing fatty acid amide defoaming agent for papermaking

A fatty acid amide defoamer and production method technology, applied in the direction of defoamer, papermaking, textiles and papermaking, etc., can solve the problems of low defoaming efficiency, poor surface activity, narrow application area, etc., and achieve low price and good fluidity Good, easy to use effect

Inactive Publication Date: 2011-08-24
殷邗清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 modern papermaking, the invention provides a new type of defoaming agent for papermaking. Foaming agent: fatty acid amide defoaming agent, the defoaming agent has good defoaming inhibition effect, easy operation, high pulp output and quality

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0006] Step 1: Add 65 parts of mineral oil into the reaction vessel, increase the temperature to 45°C, start the agitator to stir at a speed of 30 rpm, slowly add 20 parts of distearyl ethylenediamine, stir evenly, add Condensate 5 parts of diethylene glycol oleic acid monoester, continue to stir and keep warm for 1 hour.

[0007] Step 2: Add 3 parts of silicon dioxide, 1 part of sodium carbonate, and 2 parts of oxidized polyethylene, and continue to stir and keep warm for 1.5 hours.

[0008] The third step: cool down to normal temperature, add 4 parts of calcium stearate, continue to stir and react for 20 minutes to obtain the finished product.

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): D21H21/12D21H17/14
Inventor 殷邗清
Owner 殷邗清
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