Coking of bituminous solids with hot solids recycle

Details Coking of bituminous solids with hot solids recycle Coking of bituminous solids with hot solids recycle

1977-06-17

1978-04-04

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

201 12, 201 16, C10G 102

Patent

active

040826465

ABSTRACT:
Coked solids, produced by coking of tar sands, are contacted in a first zone with air and the minimum amount of supplemental fuel needed to burn all the coke. Part of the hot clean mineral solids produced is then discarded; the balance is moved into a second zone. Here supplemental fuel is burned to increase the temperature of the solids. The hot solids from the second zone are recycled to the coking stage.
Only part of the solids is heated with supplemental fuel, thereby reducing consumption of the latter. In addition, the flue gas from the second zone is relatively clean and can be vented directly to the atmosphere in the flue gas from the first zone.

REFERENCES:
patent: 2905595 (1959-09-01), Berg
patent: 3261775 (1966-07-01), Blaser
patent: 3267019 (1966-08-01), Fitch
patent: 3320152 (1967-05-01), Nathan et al.
patent: 3518181 (1970-06-01), Tse
patent: 4054492 (1977-10-01), Rammler et al.

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