Chloroethane refining method

Abstract

The invention discloses a chloroethane refining method. The chloroethane refining method comprises the following steps: 1, introducing crude chloroethane in a gas holder into a heavy component removaltower through a compressor, and carrying out pressurized heavy component removal; 2, enabling gas obtained from the tower top of the heavy component removal tower to sequentially enter a heavy component removal primary condenser and a heavy component removal secondary condenser to be condensed; 3, enabling part of the obtained condensate to flow back into the heavy component removal tower througha pipeline, cooling the other part of the condensate through a heavy component removal cooler, and enabling the cooled condensate to enter a heavy component removal liquid tank for cooling, standingand layering; 4, conveying an oil layer obtained after cooling, standing and layering of the heavy liquid removal tank into a dehydration tower through a pipeline for heating dehydration; 5, conveyinganhydrous chloroethane obtained at the bottom of the dehydrating tower into a product tank through a pipeline; further condensing gas obtained from the top of the dehydrating tower and performing standing to obtain an oil layer which flows back into the dehydrating tower through a pipeline for further dehydration. The method can effectively purify chloroethane, is simple in purification method and low in production cost, and is beneficial to industrial production and application.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for refining ethyl chloride. Background technique [0002] The obtained purity of ethyl chloride after the preparation is completed is relatively low, and it requires high purity in order to improve the application effect when it is applied in most places, so generally ethyl chloride needs to be refined after the crude preparation is completed to improve its Purity, the conventional method used in the prior art for the purification and purification of ethyl chloride is generally carried out through gasification separation and adsorption separation with adsorbents. Although such a separation method can improve the purity of ethyl chloride, it is still in use. When the adsorbent cannot be recycled, the overall purification cost of ethyl chloride is relatively high, which cannot meet the needs of large-scale industrial production. Contents of the invention [0...

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Problems solved by technology

[0002] The obtained purity of ethyl chloride after the preparation is completed is relatively low, and it requires high purity in order to improve the application effect when it is applied in most places, so generally ethyl chloride needs to be refined after the crude preparation is completed to improve its Purity, conventionally used methods for the purification and purification of ethyl chloride in the prior art are generally carried out through gasification separation combined with adsorbent adsorption separation. Although such a separation method can improve the purity of ethyl chloride, it is When the adsorbent cannot be recycled, the overall purification cost of ethyl chloride is relatively high, which cannot meet the needs of mass industrial production

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