A kind of method for preparing mortar auxiliary agent by sulfonated by-product organic acid

Abstract

The invention relates to a preparation method of building material additives. The purpose is to provide a method for preparing mortar additives with sulfonated by-product organic acids as raw materials; the mortar prepared by the mortar additives produced by the method has good fluidity, and relatively excellent consistency loss rate and compressive strength. The technical solution is: a method for preparing mortar additives with sulfonated by-product organic acid as raw material, comprising the following steps: 1) adding water and neutralizer to the reaction kettle and stirring evenly; 2) adding sulfonated by-product organic acid Into the reaction kettle, stir until the neutralization reaction is completed; the mass ratio of the water, neutralizing agent and sulfonated by-product organic acid is 0.3~0.5:0.2~0.4:1 and the mass ratio of the neutralizing agent is 0.2 ~0.4:1 mixture of liquid caustic soda and calcium oxide; the sulfonated by-product organic acid is a mixture of AES organic acid and AOS organic acid with a mass ratio of 0.2~0.4:1.

Description

technical field

[0001] The invention relates to a method for preparing building material additives, in particular to a method for preparing mortar additives by neutralizing sulfonated by-product organic acids.

[0002] technical background

[0003] Sulfonated by-product organic acids are all kinds of unqualified organic waste acids produced during the production of industrial cleaning agents by anionic surfactants and organic acids produced during tail gas treatment, specifically referring to SO in the gas phase 3 In sulfonation production, unqualified organic acids are produced when the product is started and stopped, and organic acids are produced when the sulfonation tail gas is purified by a high-voltage electrostatic demisting system. The main components are organic sulfonate (sulfuric acid ester), unreacted raw materials and sulfuric acid.

[0004] The amount of sulfonation by-product organic acid depends on the sulfonation equipment and process control, and is general...