Method of producing chlorobenzyl by photochlorination

A technology of photochlorination and benzyl chloride, which is applied in the field of photochlorination induced by ultraviolet photocatalysis to produce benzyl chloride, can solve the problems of high power consumption of light source, low calorific value of light source, low utilization rate of light energy, etc., and achieve the goal of increasing light energy The effect of high utilization rate, low calorific value and low comprehensive energy consumption
CN1948245AActive Publication Date: 2007-04-18ZHEJIANG WEIHUA NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG WEIHUA NEW MATERIAL CO LTD
Publication Date
2007-04-18

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Abstract

The present invention relates to a method for producing chlorobenzyl by utilizing photochlorination process. Said method includes the following steps: using LED as light source, making chlorine gas be contacted with the material from the bottom portion of the chlorination equipment by means of distributor, under the reaction temperature of 90 deg.C-150 deg.C making chlorine gas and aromatic compound produce side-chain chlorination reaction, firstly forming monochlorobenzyl, continuously introducing chlorine gas to obtain dichlorobenzyl, finally forming trichlorobenzyl, namely the invented product.
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Description

technical field

[0001] The present invention relates to a kind of chemical process technology using photochemical reaction, in particular to a method for producing benzyl chloride by photochlorination process, especially a kind of photochlorination induced by ultraviolet photocatalysis in the side chain chlorination process of aromatic hydrocarbons A method for producing benzyl chloride by reaction. Background technique

[0002] The chlorination of aromatic hydrocarbon side chains in the presence of light, heat or initiators is a type of free radical reaction, which can be technically divided into two types, one is catalytic chlorination with peroxide as the initiator, and the commonly used peroxide Catalysts include: dibenzoyl peroxide, azobisisobutyronitrile, etc.; the other is to use ultraviolet light to catalyze and initiate chlorination reactions. Chlorination reactors are mainly glass-lined tank reactors. The side chain chlorination of aromatic hydrocarbons is mainly...

Claims

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