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Chlorination reaction device and chlorination reaction technology for preparing cyanogen chloride

A chlorination reaction and cyanogen chloride technology, applied in the direction of cyanogen halide, cyanide, inorganic chemistry, etc., can solve the problem of no increase in the yield of raw materials, and achieve the effects of reducing residence time, reducing the probability of occurrence, and reducing energy consumption

Active Publication Date: 2015-09-23
营创三征(营口)精细化工有限公司
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  • Abstract
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Problems solved by technology

Therefore, on the whole, compared with the traditional chlorination reaction technology, the raw material yield of this technology does not increase, and sometimes it is lower

Method used

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  • Chlorination reaction device and chlorination reaction technology for preparing cyanogen chloride

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Embodiment Construction

[0019] Such as figure 1 Shown a kind of chlorination reaction device that is used to prepare cyanogen chloride, comprises prereactor 1, intermediate reaction tank 2 and rear reaction tower 3, and prereactor 1 is connected with the tank bottom of intermediate reaction tank 2, and intermediate reaction tank 2 and post-reaction tower 3 are vertically connected, and pre-reactor 1 is provided with raw material inlet, and post-reaction tower 3 is provided with packing layer, and is provided with the outlet of gas phase product at its top; In addition, The intermediate reaction tank 2 is connected to the liquid phase inlet on the top of the rear reaction tower 3 through the external circulation system provided outside it. The external circulation system is provided with a cooler 4, and a distributor 10 is provided at the liquid phase entrance. An overflow pipe 8 is also provided on the tank wall of the reaction tank 2, and the overflow pipe 8 is connected with the collection tank 7. ...

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Abstract

The invention provides a chlorination reaction device and a chlorination reaction technology for preparing cyanogen chloride. Chlorination reaction is carried out at a relatively low temperature in the divided three steps of pre-reaction, intermediate reaction and post-reaction. Cyanide is almost completely consumed, and the product residence time is shortened by the technology, so that unnecessary side reactions can be removed, and the raw material yield is maximized.

Description

technical field [0001] The invention relates to a chlorination reaction device and a chlorination reaction process for preparing cyanogen chloride, and belongs to the technical field of cyanogen chloride preparation. Background technique [0002] Cyanogen chloride is an important chemical intermediate, which can be used to prepare a series of chemical products, including cyanuric chloride and pharmaceutical intermediates. The traditional process of preparing cyanogen chloride by using sodium cyanide and chlorine as raw materials is to let sodium cyanide and chlorine directly contact, and instantly react to generate cyanogen chloride: NaCN + Cl2 = CNCl + NaCl. Due to the heat of reaction released during the chlorination reaction process, the traditional chlorination reaction process dilutes NaCN into an aqueous solution of about 15% to ensure that the material does not boil due to excessive temperature during the reaction process, and the temperature of the entire reaction sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C3/00
CPCC01C3/004
Inventor 刘至寻王瑞民张佳兴吴英琦李文跃王国华张纯峰刘文双姜龙陈光强吴丹鲍泽栾浩华亮
Owner 营创三征(营口)精细化工有限公司
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