Apparatus for the diacritic cracking of hydrocarbon feeds for th

Details Apparatus for the diacritic cracking of hydrocarbon feeds for th Apparatus for the diacritic cracking of hydrocarbon feeds for th

1978-07-07

1981-09-08

Marcus, Michael

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

208 48Q, 422194, 422207, 422202, 422151, 422156, B01J 700, B01J 1000

Patent

active

042884080

ABSTRACT:
Apparatus for the diacritic cracking of heavy hydrocarbon feeds includes a combustor for burning a fuel, to provide the hot combustion products to the reactor. The combustor is water cooled and includes gas filming with an appropriate gas such as N.sub.2 or CO.sub.2 to avoid coking in the combustor by preventing impingement of the fuel and combustion products on the combustor walls. The reactor is of reduced cross-section, also preferably utilizing gas filming to avoid coking on the reactor walls. Feed stock injectors are provided adjacent the reactor inlet. Adjacent the outlet end of the reactor is a quench section designed for the rapid injection of a quench fluid to reduce the stream temperature below that at which further cracking will take place, with the quench injectors also being gas filmed to avoid the coking thereof. Thereafter a tubular heat exchanger is provided to remove additional heat from the primary flow stream from the reactor for recovery purposes, the heat exchanger again using gas filming to minimize the build-up of coking and tar build-up, particularly encouraged by the rapidly decreasing temperatures. The gaseous products are then further quenched and cooled for processing by conventional means.

REFERENCES:
patent: 2781246 (1957-02-01), Goldtrap
patent: 2781247 (1957-02-01), Krejci
patent: 2905731 (1959-09-01), Seed
patent: 3018309 (1962-01-01), Krejci
patent: 3055957 (1962-09-01), Braconier et al.
patent: 3073875 (1963-01-01), Braconier et al.
patent: 3565968 (1971-02-01), Hicks, Jr.
patent: 3897217 (1975-07-01), Cheng
patent: 4036181 (1977-07-01), Matovich
patent: 4134824 (1979-01-01), Kanin et al.
patent: 4134966 (1979-01-01), Austin

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