Continuous process for cracking 1,2-dichloroethane
AssigneeAtochem
InventorsClaude Demaiziere, Jean Lesparre, Yves Correia
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Abstract
A thermal process for cracking 1,2-dichloroethane to form vinyl chloride comprising heating 1,2-dichloroethane in a reaction zone at a temperature between 300.degree. and 650.degree. C. under an absolute pressure between 1 and 40 bars; said heating being conducted in the presence of hydrochloric acid.
Claims11
A process for the preparation of vinyl chloride from 1,2-dichloroethane, comprising (a) continuously introducing a feedstream of 1,2-dichloroethane and HCl into an empty reactor thus obtaining a reactor containing said feedstream, wherein such feedstream the molar ratio of HCl to 1,2-dichloroethane ranges from 0.1 to 1.8, (b) continuously noncatalytically thermally cracking said feedstream into vinyl chloride within said reactor containing said feedstream, in vapor phase, at a temperature ranging from about 300.degree. to 650.degree. C. and under an absolute pressure ranging from 1 to 40 bars, and (c) continuously recovering vinyl chloride, as it is formed, from said reactor containing said feedstream,
- wherein said process is carried out at a conversion rate of 95% or higher and without carbonaceous build-up.
A process for thermally cracking 1,2-dichloroethane to produce vinyl chloride, said process comprising the steps of:
- (a) feeding 1,2-dichloroethane and hydrogen chloride into an empty reactor;
- and
- (b) thermally cracking said 1,2-dichloroethane in the presence of said hydrogen chloride to form vinyl chloride.
A process for cracking 1,2-dichloroethane to produce vinyl chloride, said process comprising the steps of:
- (a) feeding 1,2-dichloroethane and hydrogen chloride into a reactor;
- and
- (b) heating said 1,2-dichloroethane in the presence of said hydrogen chloride and in the absence of a solid catalyst at conditions effective to crack said 1,2-dichloroethane to vinyl chloride.
A process for the preparation of vinyl chloride from 1,2-dichloroethane, consisting essentially of (a) continuously introducing a feedstream of 1,2-dichloroethane and HCl into an empty reactor thus obtaining a reactor containing said feedstream, (b) continuously thermally cracking said feedstream into vinyl chloride within said reactor containing said feedstream, in vapor phase, at a temperature ranging from about 300.degree. to 650.degree. C. and under an absolute pressure ranging from 1 to 40 bars, and (c) continuously recovering vinyl chloride, as it is formed, from said reactor containing said feedstream,
- wherein said process is carried out at a conversion rate of 95% or higher and without carbonaceous build-up.
A process for the preparation of vinyl chloride from 1,2-dichloroethane, comprising (a) introducing feedstream of 1,2-dichloroethane and HCl into an empty reactor thus obtaining a reactor containing said feedstream, (b) thermally cracking said feedstream into vinyl chloride within said reactor containing said feedstream, in vapor phase, at a temperature ranging from about 300.degree. to 650.degree. C. and under an absolute pressure ranging from 1 to 40 bars, and (c) recovering vinyl chloride, as it is formed, from said reactor containing said feedstream,
- wherein said process is carried out at a conversion rate of 95% or higher and without carbonaceous build-up.
Dependencies are inferred from the claim text.