Multifunctional methane chloride production system

Abstract

The invention discloses a multifunctional methane chloride production system which comprises a device for producing methane chloride by a methanol hydrochlorination method, a device for producing methane chloride by a methane chloride thermal chlorination method, a dichloromethane refining device, a trichloromethane refining device, a carbon tetrachloride refining device, a device for producing methane chloride by converting carbon tetrachloride and a hydrochloric acid deep analysis device. According to the invention, the proportion of the whole series of products can be freely adjusted in an ultra-large range, and besides the production of the methane chloride and the carbon tetrachloride, dichloromethane and trichloromethane can be produced in proportion, and only a dichloromethane product, or only trichloromethane or only carbon tetrachloride can be produced; and no by-product hydrochloric acid exists, the whole process is coupled and energy-saving, energy consumption is reduced, and energy conservation and emission reduction are effectively achieved. The process can meet the modern engineering requirements of high quality, low consumption, long period, high load, multiple functions, environmental protection and integration, the limit utilization of chlorine atoms is realized, and the utilization rate exceeds 99%.

Description

technical field [0001] The invention relates to the technical field of a multifunctional methane chloride production system and a process method, in particular to a multifunctional methane chloride production system for a full range of products and a multifunctional methane chloride production system for limit utilization of chlorine atoms. Background technique [0002] The ratio of dichloromethane to chloroform in the existing methane chloride plant is basically 1:1, and the adjustment range is small. One of the products cannot be produced independently, and only dichloromethane and chloroform can be produced in balance, or dichloromethane is mainly produced. The supporting production of chloroform and carbon tetrachloride, or the main production of chloroform supporting the production of dichloromethane and carbon tetrachloride. The amount of by-product hydrochloric acid is large, which restricts the development of methane chloride. The utilization rate of chlorine gas is...

AI Technical Summary

Problems solved by technology

The utilization rate of chlorine gas is low, only 85~87% based on methane chloride, and a large amount of chlorine gas is converted into hydrochloric acid

The reaction heat generated by the chemical reaction of the device has not been effectively utilized, and the energy consumption is relatively high

[0003] In the prior art, CN87103016B-methane thermal chlorination process discloses the production process of producing monochloromethane, methylene dichloride, trichloromethane and carbon tetrachloride by the thermal chlorination of methane. The gaseous product is returned to the reactor as a small cycle, and the relative ratio of the four methane chlorides in the gaseous product is adjusted, but the process can only produce one kind of substance, and the other three substances are by-products. The maximum ratio of the main dichloromethane is 60%, the maximum proportion of the main production of chloroform is 50%, the maximum proportion of the main production of carbon tetrachloride is 80%

When the existing methane chloride is produced, on the one hand, the purity of each product obtained is not enough. On the other hand, if only one product is required to be produced, redundant by-products will be brought out, such as hydrochloric acid by-products. The obtained hydrochloric acid by-products are due to impurities Many, can not be directly applied to other fields, will cause a waste of chlorine, can not meet the existing production needs of methane chloride

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