Method and means for recovering heat in the pyrolysis of 1,2-dic

Details Method and means for recovering heat in the pyrolysis of 1,2-dic Method and means for recovering heat in the pyrolysis of 1,2-dic

1997-03-11

1998-03-17

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 2100

Patent

active

057289069

ABSTRACT:
A process for the pyrolysis of 1,2-dichloroethane (EDC) in a pyrolysis furnace (1) involves feeding liquid EDC into a convection heat transfer tube (2) for preheating, channeling an intermediate flow of preheated EDC into a radiation heat transfer tube (3) for further heating, thereby pyrolyzing a part of EDC into vinyl chloride monomer, and discharging a decomposition gas flow from the pyrolysis furnace. Potential heat is recovered from the decomposition gas by using a double tube type heat exchanger (10) consisting of outer and inner tubes, that is, by channeling the intermediate flow through the outer tube (11), channeling the decomposition gas through the inner tube (15) for heat exchange between the intermediate flow and the decomposition gas, and feeding the heat acquired intermediate flow into the radiation heat transfer tube (3).

REFERENCES:
patent: 3896182 (1975-07-01), Young
patent: 4014947 (1977-03-01), Volodin et al.
patent: 4225520 (1980-09-01), Riedl et al.
patent: 4590318 (1986-05-01), Longhini
patent: 4665243 (1987-05-01), Burks
patent: 4720599 (1988-01-01), Hebgen et al.
patent: 4746759 (1988-05-01), Dummer et al.

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