Special heat exchange for coal liquefaction system

Details Special heat exchange for coal liquefaction system Special heat exchange for coal liquefaction system

1981-11-30

1984-04-24

Cline, William R.

Gas and liquid contact apparatus

With external supply or removal of heat

Heat exchange means at or downstream of contact zone

261161, F02M 3100

Patent

active

044446985

ABSTRACT:
Apparatus for heating a flowable mixture of particulate coal and a liquid hydrocarbon stream at high pressure by heat exchange with reaction products of a coal hydrogenation and liquefaction process which are obtained in the gaseous phase under reaction conditions, comprising direct heat exchange means and indirect heat exchange means combined into a single structural unit, and being devoid of liquid spray means, said single structural unit containing an upper zone separated from a lower zone and being housed in a pressure vessel, and further comprising feed means for viscous material connected to the bottom part of the housing, said indirect heat-exchange means being equipped with a feed means and a discharge means for a heat exchange fluid, said direct heat-exchange means arranged above said direct heat exchange means and being provided with discharge means for heated viscous material, feed means for heat exchange fluid for said direct heat exchange, and discharge means for the latter heat exchange fluid communicating with said indirect heat-exchange means, thereby resulting in apparatus wherein essentially the same fluid is employed for heat exchange purposes for both the indirect an direct heat exchange means.

REFERENCES:
patent: 1284080 (1918-11-01), Fischer
patent: 1562827 (1925-11-01), Fothergill
patent: 1669673 (1928-05-01), Price
patent: 2311512 (1943-02-01), Backstrom et al.
patent: 2414135 (1947-01-01), Berlowitz
patent: 2689018 (1954-09-01), Kittredge
patent: 3499734 (1970-03-01), Newman et al.

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