Device for photo-catalytic bromination reaction

Abstract

The invention discloses a device for photo-catalytic bromination reaction. The device comprises a first reaction kettle, a second reaction kettle, a front phase separation tank, a rear phase separation tank, a first circulating pump, a first flow meter, a second circulating pump, a second flow meter, static mixers and illumination towers, wherein each illumination tower comprises a jacket of which the wall is provided with a brine inlet and a brine outlet, a brine cooling cavity is formed between the jacket and an enamel glass interlayer container, a reaction chamber is formed between a quartz glass tube in the enamel glass interlayer container and the enamel glass interlayer container, a light emitting diode (LED) lamp is arranged in the quartz glass tube and connected with a power wire, and a material inlet is made on the lower part of the enamel glass container and connected with a connecting port in the static mixers; and the illumination towers and the static mixers form at least three groups of reactors which are connected in series, in parallel or in series parallel, and each group is connected by a pipe.

Description

technical field [0001] The invention relates to a device for photocatalytic bromination reaction, which belongs to the field of chemical equipment. Background technique [0002] Bromine is one of the important chemical raw materials, widely used in fields such as pharmaceutical intermediates, intermediates for dyestuff industry, brominated flame retardants and brominated pesticides. In the pharmaceutical industry, photocatalytic bromination reaction is a common process. In the prior art, photocatalytic bromination reaction cooling is carried out in the same container, that is, a light tower is set in the reactor, and materials are directly dropped into the reactor. Therefore, This type of reaction has the disadvantages of difficult control of the feed ratio of the reaction solution, low light efficiency, long reaction time, insufficient reaction, poor selectivity, and many side reactions. Contents of the invention [0003] The object of the present invention is to overcom...

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Problems solved by technology

In the pharmaceutical industry, photocatalytic bromination reaction is a common process. In the prior art, photocatalytic bromination reaction cooling is carried out in the same container, that is, a light tower is set in the reactor, and materials are directly dropped into the reactor. Therefore, This type of reaction has the disadvantages of difficult control of the feed ratio of the reaction solution, low light efficiency, long reaction time, insufficient reaction, poor selectivity, and many side reactions.

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