Production process of high-quality fatty alcohol polyoxyethylene ether sulfate

Abstract

The invention belongs to the technical field of fine chemicals. The invention aims at providing a production process of a high-quality fatty alcohol polyoxyethylene ether sulfate with high content ofactive matters, light color and low dioxane residues; and simultaneously, the process flow is simple and can be conveniently realized on an existing production device of the fatty alcohol polyoxyethylene ether sulfate without changing sulfonation equipment. The technical scheme is as follows: the production process of the high-quality fatty alcohol polyoxyethylene ether sulfate comprises the following steps: 1) pre-dissolving an appropriate amount of sulfonation stabilizer in fatty alcohol polyoxyethylene ether; 2) sulfonating the fatty alcohol polyoxyethylene ether pre-dissolved with the sulfonation stabilizer on an existing vapor phase SO3 film type sulfonation device according to an existing sulfonation production process of the fatty alcohol polyoxyethylene ether sulfate; and 3) enabling an sulfonated acid ester to directly enter a neutralization system without aging and producing the fatty alcohol polyoxyethylene ether sulfate according to an existing neutralization process.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a production process for producing fatty alcohol polyoxyethylene ether sodium sulfate with low dioxane content, high active substance content and light color. Background technique [0002] Fatty alcohol polyoxyethylene ether sulfate has excellent wetting, decontamination, emulsification and foaming properties, good thickening effect, wide compatibility and good biodegradability, and is widely used in liquid detergents, such as dish washing and shampooing Shampoo, bath liquid, etc., also used as wetting agent, dyeing aid, foaming agent, degreasing agent, etc. in textile printing and dyeing, petroleum, leather, building materials and other industries. [0003] Fatty alcohol polyoxyethylene ether sulfate is an anionic surfactant product obtained by sulfonating and neutralizing fatty alcohol polyoxyethylene ether (AEO). At present, most sulfonation processes use g...

AI Technical Summary

Problems solved by technology

At present, most sulfonation processes use gaseous SO 3 In the membrane sulfonation method, as the reaction progresses during the sulfonation process, the initial viscosity of the reaction system rises sharply from 0.1Pa.s to 1.2Pa.s. The viscosity problem causes great resistance to the gas-liquid sulfonation reaction, and also is SO 3 Gas dissolution in the liquid phase interface is hindered, making the sulfonation reaction unstable, resulting in a high content of unreacted AEO in the product, and at the same time causing product decomposition, resulting in a high content of dioxane in the product

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