Trichlorethylene industrial production plant

Abstract

The invention provides an industrial production apparatus for trichloroethylene. The apparatus is characterized in that: an acetylene air inlet pipeline and a chlorine gas air inlet pipeline are respectively connected with an inlet end of a chlorination tower; an outlet end of a crude tetrachloroethane tank is connected with an inlet of a tetrachloroethane tower; an outlet end of a material feeding preheater of a dehydrochlorination reactor is connected with an inlet end of a desorber; an outlet end of a desorption residue tank is connected with an inlet end of a low-boiler tower; an outlet end arranged on the lower portion of the low-boiler tower is respectively connected with an inlet end of a reboiler of the low-boiler tower and an inlet end of a trichloroethylene tower; an outlet end of a trichloroethylene residue tank is connected with an inlet end of a middle distillate tower; an outlet end arranged on the lower portion of the middle distillate tower is respectively connected with an inlet end of a reboiler of the middle distillate tower and an inlet end of a tetrachloroethylene tower; heat exchanging devices of each complete condenser and each end cooler adopt graphite parts dipped in modified phenol formaldehyde resin. The industrial production apparatus for the trichloroethylene has characteristics of reasonable structure, large production capacity, safe, stable and long-period operation, and the prepared trichloroethylene has high quality.

Description

technical field [0001] The present invention provides an improved trichlorethylene production device. Background technique [0002] At present, the vast majority of domestic trichlorethylene production enterprises adopt the "gas-phase catalytic dehydrochlorination method" for production. Its simple production process is: chlorine gas and acetylene gas generate crude tetrachloroethane in the chlorination tower, the crude tetrachloroethane is vaporized after rectification, hydrogen chloride is removed in the dehydrochlorination reactor to generate trichloroethylene, and then through a A series of rectification operations produce qualified trichlorethylene products. Since the "gas-phase catalytic dehydrochlorination method" trichlorethylene production device is a new production process in recent years, other domestic trichlorethylene production enterprises have encountered a series of defects and problems in the operation process, which is manifested in the relatively small pr...

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Problems solved by technology

Since the "gas-phase catalytic dehydrochlorination method" trichlorethylene production device is a new production process in recent years, other domestic trichlorethylene production enterprises have encountered a series of defects and problems in the operation process, which is manifested in the relatively small production capacity of the device , all about 10,000 tons / year, high energy consumption; small unit equipment load; poor comprehensive utilization of heat in the production device; difficult to solve the problem of medium corrosion in each process of the production device; the quality of trichlorethylene products is poor

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