Method for preparing dichlorohydrin and reaction device

A technology of dichloropropanol and a reaction device is applied in the field of a method for preparing dichloropropanol and a reaction device, and can solve the problems of serious environmental pollution, increased reaction process, difficult waste water treatment, etc., and achieves high reaction efficiency, improved reaction efficiency, The effect of improving industrial production efficiency
CN101774886AActive Publication Date: 2010-07-14江苏德纳化学股份有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
江苏德纳化学股份有限公司
Publication Date
2010-07-14

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Abstract

The invention relates to improvement on a method for preparing dichlorohydrin by chlorinating glycerin and a reaction device. The chlorinating reaction is the series reaction of a reaction kettle and a sprinkling reaction tower which is filled with filler. The sprinkling reaction tower is sequentially provided with a placing filter zone, a hollow built-in sprinkling device zone and a placing filter zone from top to bottom. After viscosity decrease by kettle type preaction, the sprinkling reaction is carried out, the reaction contact is sufficient, the reaction time is long, the reaction efficiency is greatly enhanced, the conversion rate of the glycerin achieves 100%, and the reaction time is short and only needs 6-8 hours. The dichlorohydrin yield can be enhanced to more than 96%, and the yield can be enhanced to more than 99.0% by adding kreatine and strong acid mixing catalyst. The invention has the advantages of simple process flow, convenient reaction operation and high reaction efficiency.
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Description

technical field

[0001] The present invention relates to the improvement of the preparation method and reaction device for the preparation of epichlorohydrin intermediate dichloropropanol by chlorination of glycerin, especially relates to a kind of dichloropropanol with high reaction efficiency and dichloropropanol yield and short reaction time Alcohol preparation method and reaction device. Background technique

[0002] Epichlorohydrin, also known as epichlorohydrin, is an important organic chemical raw material and fine chemical with a wide range of uses. For example, it is an important raw material for the preparation of epoxy resin, synthetic elastomer, and paper sizing agent. Traditional synthesis methods include propylene high-temperature chlorination method and propylene acetate method, and later developed a glycerin method to prepare epichlorohydrin. The reaction process is as follows:

[0003]

[0004] The reaction process is divided into two steps, (1) formula; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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