Liquefied chlorine flash evaporation purification preparation technique

Abstract

The invention discloses a chlorine liquid flash vaporization purification production process; a flash vaporization purification tank is arranged to enable the flash vaporization purification tank to connect with a high pressure chlorine liquid storage tank through the high pressure chlorine liquid pipeline; meanwhile, the flash vaporization purification tank is connected with a chlorine presser through a mixture gas pipeline; the high pressure chlorine liquid in the high pressure chlorine liquid storage tank is fed to the flash vaporization purification tank; the pressure in the flash vaporization purification tank is more than 0.7 Mpa; the mixture gas in the flash vaporization purification tank is extracted by the chlorine presser to enable the pressure in the flash vaporization purification tank is reduced to be less than or equal to 0.4 Mpa; in this time, the high concentration chlorine liquid is produced in the flash vaporization purification tank; the high pressure chlorine liquid in the high pressure chlorine liquid storage tank is fed to the flash vaporization purification tank continuously; the high concentration chlorine liquid produced in the flash vaporization purification tank is directly fed into the user pressure tank. The chlorine liquid flash vaporization purification production can increase the concentration of the chlorine liquid obtained by the chlorine liquid high pressure method to be 99.75% through the process, be applicable to the production of the downstream products and have the advantages of reasonable design, easy operation, high production safety and low production cost.

Description

technical field [0001] The invention relates to the liquefaction of chlorine gas, which is a production process for liquid chlorine flash distillation purification. Background technique [0002] Since chlorine gas is the raw material of inorganic chemical industry, it has a wide range of uses. At present, the method for producing chlorine gas is mainly salt water electrolysis. Although this method is simple and easy to operate and has low production cost, the purity of chlorine gas produced by this method is low and cannot be directly used in some organic chemical products. Therefore, it is necessary to The chlorine gas is liquefied and then vaporized to obtain higher purity chlorine gas. Generally, low-pressure method and high-pressure method are used in this field to liquefy chlorine gas. Although the liquefaction of chlorine gas by low-pressure method can obtain chlorine gas with higher purity, it has high energy consumption, complicated process and high production cost...

AI Technical Summary

Problems solved by technology

Although the liquefaction of chlorine gas by low-pressure method can obtain chlorine gas with higher purity, it has high energy consumption, complicated process and high production cost.

The high-pressure method is used to liquefy chlorine gas. Although the energy consumption is low, the process is relatively simple and easy to operate, the purity of the obtained chlorine gas is low. When this chlorine gas is used in downstream products, it will directly affect the quality and output of downstream products.

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