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Trichloroethylene gas phase catalysis production method

A kind of technology of trichloroethylene and production method, which is applied in the field of gas-phase catalytic production of trichloroethylene and achieves the effect of simple process

Inactive Publication Date: 2012-11-14
HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG
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Problems solved by technology

[0004] In order to overcome the defect of existing trichlorethylene production method, the present invention proposes trichlorethylene gas phase catalytic production method

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  • Trichloroethylene gas phase catalysis production method

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Embodiment Construction

[0009] according to figure 1 As shown, after acetylene and chlorine pass through the drying process, they are sent to the acetylene chlorination tower respectively, and acetylene and chlorine are chlorinated, then vaporized through the tetrachloroethane tower and refined tetrachloroethane vaporizer, and then reacted through the cracking reactor Finally, after passing through the desorption tower and low boiling tower, it reaches the trichlorethylene tower to form a trichlorethylene product. After being treated in an intermediate tower, the material after the removal of trichlorethylene is passed into the tetrachlorethylene tower to form a tetrachlorethylene product. The mother liquor after separation of tetrachlorethylene is returned to the back of the tetrachloroethane tower to continue to participate in the reaction, and the material after the desorption tower is absorbed by the adsorption tower to absorb hydrogen chloride, and the remainder is sent to the soda plant to be us...

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Abstract

The invention provides a trichloroethylene gas phase catalysis production method. Acetylene and chlorine are dried to be respectively sent to an acetylene chlorination tower, are subjected to chlorination reaction, then are gasified through a tetrachloroethane tower and a refined tetrachloroethane vaporizer, react through a splitting reactor, and are led in a desorber and a low boiling tower to reach a trichloroethylene tower to form trichloroethylene products, and matters produced after trichloroethylene is separated are processed through an inter-chamber tower to be led in another tetrachloroethylene tower to form tetrachloroethylene products. Mother liquor produced after the tetrachloroethylene is separated returns the back part of the tetrachloroethane tower to continuously participate in the reaction, materials passing through the desorber pass through an adsorption tower to adsorb hydrogen chloride, and residual materials are delivered to a soda plant for producing polyvinyl chloride raw materials. According to the trichloroethylene gas phase catalysis production method, the tetrachloroethylene products are obtained while trichloroethylene is produced, and by-products can be used for producing raw materials of polyvinyl chloride products. The trichloroethylene gas phase catalysis production method is applicable to application of production of the trichloroethylene products by using acetylene and chlorine.

Description

technical field [0001] The present invention proposes a production method for products in the chemical industry, specifically a gas-phase catalytic production method for trichlorethylene. Background technique [0002] The existing preparation method of trichlorethylene: Chloroacetic acid was first discovered in 1841, and chloroacetic acid was obtained by chlorinating acetic acid under direct sunlight in an experiment in 1857. At present, the production methods of chloroacetic acid include vinyl chloride, chloroacetyl chloride hydrolysis, trichloroethylene hydrolysis, chloroacetylene method, tetrachloroethylene method, glycerol method, dichloroacetic acid method, trichloroacetaldehyde method, and chloroethanol method. There are more than ten kinds of oxidation methods, ketene oxidation methods and acetic acid catalytic chlorination methods. The industrial production methods mainly include trichlorethylene hydrolysis method, chloroacetyl chloride method and acetic acid cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/25C07C21/10C07C21/12
Inventor 张成武张宏利陆井珍
Owner HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG
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