Technology for producing fatty alcohol polyethyleneglycol ether sulfate with low dioxane content by continuous vacuum tube type neutralization

An alcohol polyoxyethylene ether, vacuum tube type technology, applied in the direction of sulfuric acid ester preparation, transportation and packaging, chemical instruments and methods, etc., can solve the problems of poor system stability, increased energy consumption waste, large equipment investment, etc., to achieve easy system , stable operation, and the effect of reducing investment
CN101690875AActive Publication Date: 2010-04-07ZANYU TECH GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZANYU TECH GRP CO LTD
Publication Date
2010-04-07

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Abstract

The invention relates to a technology for producing an anionic surfactant, in particular to the technology for preparing fatty alcohol polyethyleneglycol ether sulfate with low content of 1,4-dioxane. The invention aims at providing a vacuum neutralization technology which can be used for producing the fatty alcohol polyethyleneglycol ether sulfate with low dioxane content; and the technology is characterized by high efficiency of removing the dioxane, easy control of a system, stable operation, low energy consumption and less investment. The technical scheme comprises the following steps: A. respectively metering fatty alcohol ether sulfate out of a sulfonator, base and water, and leading the three to enter into a neutralizer for carrying out neutralization together with recyclable materials out of a vacuum tube type spray remover; B. delivering the materials after the neutralization back to the vacuum tube type spray remover by using a delivery pump, and removing the 1,4-dioxane; and one part of finished products after removal re-enter into the neutralizer for carrying out neutralization and recycling as the recyclable materials, and the other part is directly discharged as the products.
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Description

technical field

[0001] The invention relates to a production process of anionic surfactants, in particular to a process for preparing fatty alcohol polyoxyethylene ether sulfate with low 1,4-dioxane content. Background technique

[0002] In the surfactant industry, anionic surfactants are the earliest developed, largest and most widely used products. Among them, fatty alcohol ether sulfate (AES) obtained by epoxy addition, sulfation, neutralization and other processes has excellent decontamination, emulsification, foaming, viscosity adjustment and good hard water resistance. , is a very important anionic surfactant, widely used in liquid detergents in contact with the human body, such as shampoo, shower liquid, hand sanitizer, dish detergent, laundry detergent, etc. In 2008, my country's anionic surfactant output was about 550,000 tons, and fatty alcohol ether sulfate exceeded 230,000 tons.

[0003] 1,4-dioxane, also known as 1,4-dioxane or dioxane, colorless liquid, molec...

Claims

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