Dehydration device and dehydration method for aqueous vinyl chloride monomer

Abstract

The invention relates to the technical field of dehydration devices, and relates to a dehydration device and a dehydration method for aqueous vinyl chloride monomers; the dehydration device for aqueous vinyl chloride monomers includes a first spherical tank and a steam-water separator; A first water storage bag communicating with the cavity of the first spherical tank is fixed, there is a water outlet port at the bottom of the first water storage bag, and a vinyl chloride recovery port and a first water inlet port are respectively arranged at the top of the steam-water separator The water outlet end of the first accumulated water bag and the first water inlet end of the steam-water separator are fixedly connected together through the first water outlet pipe, and a vinyl chloride recovery pipe is fixedly installed on the vinyl chloride recovery port end of the steam-water separator. The invention has a reasonable and compact structure and is easy to use. Through the cooperative use of the first spherical tank, the second spherical tank, the steam-water separator and the solid alkali dryer, the purpose of dehydrating the hydrous vinyl chloride monomer is realized, and it is safe, reliable and has a good dehydration effect. The characteristics are convenient for operation, improve work efficiency and reduce production cost.

Description

technical field [0001] The invention relates to the technical field of dehydration devices, and relates to a dehydration device and a dehydration method for vinyl chloride monomer containing water. Background technique [0002] During the production of vinyl chloride monomer by calcium carbide method, water is inevitably brought into the system. The presence of water will lead to the hydrolysis reaction of vinyl chloride peroxide to produce acidic substances such as hydrogen chloride (which becomes hydrochloric acid when it meets water), formic acid, formaldehyde, etc., which will corrode steel equipment, and the generated iron ions will directly affect the quality of PVC resin. The presence of iron ions promotes the reaction of oxygen in the system with vinyl chloride monomer to form peroxide. The latter can not only hydrolyze repeatedly, but also trigger the polymerization of vinyl chloride monomer to produce PVC with a low degree of polymerization, which will cause self-...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a dehydration device and dehydration method for vinyl chloride monomer containing water, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of existing dehydration devices. The problem of high production costs

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