Process for the manufacture of vinyl chloride by the thermal cra

Details Process for the manufacture of vinyl chloride by the thermal cra Process for the manufacture of vinyl chloride by the thermal cra

1980-07-17

1982-04-13

Doll, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 2106

Patent

active

043249329

ABSTRACT:
The description covers a process for the manufacture of vinyl chloride by thermal cracking of 1,2-dichloroethane. The hot gas leaving the reaction furnace is cooled to the inlet temperature of the column in which the hydrogen chloride is separated from the products of thermal cracking of the 1,2-dichloroethane. Within the range of 560.degree. to 480.degree. C. and of 220.degree. to 120.degree. C., one or more cooling stages are applied through which the reaction gas mixture passes at high flow velocity, the cooling device being preferably a single-tube cooler. Starting from about 220.degree. C., a liquid substantially consisting of 1,2-dichloroethane may be added intermittently. The heat transferred to the coolant in the stages of indirect cooling is preferably reused within the vinyl chloride manufacturing process.

REFERENCES:
patent: 2762850 (1956-09-01), Lenz
patent: 3689579 (1972-09-01), Baader et al.
patent: 3732322 (1973-05-01), Kawaguchi et al.
patent: 3920761 (1975-11-01), Krome

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