Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1987-10-08
1989-01-17
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
422200, C07C 1734, C07C 2106
Patent
active
047989149
ABSTRACT:
The hot, vinyl chloride-containing gases leaving the cracking furnace heat liquid 1,2-dichloroethane in a first container to the boiling point or to its immediate vicinity, and the 1,2-dichloroethane is transferred into a second container in which it is partly evaporated under a lower pressure than in the first container. The evaporated 1,2-dichloroethane is fed into the cracking furnace, and the nonevaporated 1,2-dichloroethane is fed back into the first container. By supplying fresh, optionally prewarmed 1,2-dichloroethane into the second container, the amount of product evaporated therein is replaced, the prewarming advantageously being regulated through the level of the liquid 1,2-dichloroethane in the second container. The prewarming of the 1,2-dichloroethane can take place in the convection zone of the cracking furnace or by means of a temperature-control medium, for example steam, which has been heated in the convection zone of the cracking furnace. Compared to processes according to the prior art, higher cracking conversions and a more favorable energy utilization are achieved.
REFERENCES:
patent: 3903182 (1975-09-01), Rechmeier et al.
Frohlich Walter
Krumbock Reinhard
Link Gerhard
Prantl Georg
Schaffelhofer Iwo
Hoechst Aktiengesellschaft
Mars Howard T.
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