Method for preparing dichloropropanol

A technology of dichloropropanol and chloropropene, applied in chemical instruments and methods, catalyst activation/preparation, introduction of hydroxyl and halogen preparation, etc., can solve the problems of intensified side reactions, large waste water discharge, high energy consumption, etc., and achieve the goal of reaction The effect of mild conditions, safe and efficient process, and high conversion rate of raw materials
CN107954835AActive Publication Date: 2018-04-24CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-04-24

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Abstract

The invention discloses a method for preparing dichloropropanol. The method comprises the steps of performing a contact reaction on allyl chloride, hydrogen chloride and an oxidant in the presence ofa catalyst, wherein the catalyst contains a titanium silicate molecular sieve subjected to activation treatment and the activation treatment comprises the step of contacting a titanium silicate molecular sieve with an aqueous solution containing an acid and a selectable peroxide. The method has the characteristics of no use of toxic chlorine, simple operation process, mild reaction conditions, high raw material conversion rate, high selectivity of dichloropropanol, and easy separation of the catalyst.
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Description

technical field

[0001] The present invention relates to a method for preparing dichloropropanol. Background technique

[0002] Dichloropropanol is a raw material for the synthesis of various chemical products such as dichloroacetone, cellulose acetate, water treatment agent, etc. It is also an important intermediate for the synthesis of epichlorohydrin, epoxy resin, ion exchange resin and other substances, and its market demand is very high. big. The preparation methods of dichloropropanol in the prior art mainly include chloropropene chlorohydrin method, allyl alcohol chlorination method, glycerol chlorination method and the like. Among them, the chloropropene chlorohydrin method developed earlier, its technological process is simple and mature, and has a large market share.

[0003] To prepare dichloropropanol by the traditional chloropropene chlorohydrin method, firstly, chlorine gas is dissolved in water to generate hypochlorous acid, and then hypochlorous acid and chl...

Claims

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