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High-efficiency chlorination method for producing chlorocyclohexane

A chlorocyclohexane, chlorination reaction technology, applied in chemical instruments and methods, organic chemistry, halogenated hydrocarbon preparation, etc. problems such as low rate, to achieve the effect of improving project scalability, improving safety, and high reaction utilization efficiency

Active Publication Date: 2018-09-04
BEIJING SUN SILVER SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Disclosed in CN 1291957C is a method for batch production of chlorocyclohexane using a composite catalyst, the catalyst increases the cost, the batch reaction efficiency is low and it is not easy to carry out engineering amplification
[0004] Disclosed in CN 1274651C is a method for producing chlorocyclohexane by light initiation combined with rectification in the tower still. The method cannot solve the problem that cyclohexane chlorination is easy to explode, and is only suitable for pilot or small scale
[0005] CN 101367708B discloses a method for continuously producing chlorocyclohexane with light initiation and fixed reaction volume. The method uses nitrogen to dilute chlorine to ensure the safety of the chlorination reaction, but the reaction efficiency cannot be improved, and cyclohexane must Excessive, the utilization rate of cyclohexane in a single reaction is low, and the subsequent separation consumes a lot of energy

Method used

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  • High-efficiency chlorination method for producing chlorocyclohexane
  • High-efficiency chlorination method for producing chlorocyclohexane
  • High-efficiency chlorination method for producing chlorocyclohexane

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Embodiment 1

[0039] In the process of producing chlorocyclohexane by chlorination reaction in a single-stage reactor, chlorine gas and cyclohexane liquid are sprayed into the cavity of the high-efficiency chlorination reactor through the feed port of the high-efficiency chlorination reactor, and along the process High-efficiency mixing under the shearing action of the light-induced and high-speed rotating rotor, and moves to the shell under the action of centrifugal force. During this process, the mixed material is affected by the centrifugal force field and disturbed by the high-speed shearing of the layer-by-layer stator and rotor, resulting in multiple efficient mixing and redistribution and substitution reactions. The temperature of the reaction system is controlled by the temperature control of the end cover and the shell. Controlled by the device, the temperature of the reaction system is 25°C at the initial start-up, the amount of chlorine gas is 15kg / h, and the feed amount of cycloh...

Embodiment 2

[0045]In the process of producing chlorinated cyclohexane by using two-stage series reactors for chlorination reaction, chlorine gas and cyclohexane liquid are sprayed into the cavity of the high-efficiency chlorination reactor through the feed port of the high-efficiency chlorination reactor respectively. High-efficiency mixing under the shearing action of the high-speed rotating rotor triggered by the process light and moving to the shell under the action of centrifugal force. During this process, the mixed material is affected by the centrifugal force field and disturbed by the high-speed shearing of the layer-by-layer stator and rotor, resulting in multiple efficient mixing and redistribution and substitution reactions. The temperature of the reaction system is controlled by the temperature control of the end cover and the shell. The temperature of the reaction system is 25°C at the initial start-up, the amount of chlorine gas is 37.5kg / h, and the feed amount of cyclohexane...

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Abstract

The invention relates to a high-efficiency chlorination method for producing chlorocyclohexane, in particular to a high-efficiency synthetic complete device for producing the chlorocyclohexane and anequipped operation process. Compared with the existing chlorocyclohexane production method, the chlorination method has the characteristics of short reaction time, high reaction efficiency and high selectivity, overcomes the concentration gradient and temperature gradient problems which are difficult to solve by the traditional mixing apparatus, greatly increases the safety and amplifying propertyof the chlorination and can simultaneously achieve an object of significantly increasing the industrial yield and decreasing the production cost.

Description

technical field [0001] The invention provides a high-efficiency chlorination reaction process method for producing chlorocyclohexane, specifically including a complete set of high-efficiency synthesis equipment for producing chlorocyclohexane and its supporting operation process, belonging to the field of organic chemical industry. Background technique [0002] The production process of chlorocyclohexane is classified into three main types according to the initiation method: initiator initiation, thermal initiation and photoinitiation. According to the reaction operation mode, it can be divided into batch type and continuous type. [0003] CN 1291957C discloses a method for intermittent production of chlorocyclohexane using a composite catalyst, but the catalyst increases the cost, the efficiency of the batch reaction is low, and it is not easy to carry out engineering amplification. [0004] CN 1274651C discloses a method for producing chlorocyclohexane by photoinitiation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/10C07C23/10
CPCC07C17/10C07C2601/14C07C23/10
Inventor 宋云华刘宝永刘欣牛晓红魏玉胜李正林郝高峰陈建铭
Owner BEIJING SUN SILVER SCI & TECH
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