Process for the gentle flash distillation of residual oils

Details Process for the gentle flash distillation of residual oils Process for the gentle flash distillation of residual oils

2005-01-11

2005-01-11

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Fractionation

Distillation

C208S365000

Reexamination Certificate

active

06841064

ABSTRACT:
Residual oil from the processing of crude oil, natural bitumen or oil sand is mixed in a mixer with granular, hot coke as heat carrier (heat carrier coke) in a weight ratio of 1:3 to 1:30, where on the granules of the heat carrier coke there is first of all formed a liquid residue film which partly evaporates in the mixer. Gases and vapors and moist, sticky coke are withdrawn from the mixer. The mixture of coke and residual oil is introduced into a subsequently connected stirred tank in which the mixture slowly moves downwards while being stirred mechanically at a temperature of 450 to 600° C. and preferably at 480 to 550° C. Dry, flowable coke is withdrawn from the stirred tank. Usually, the dwell time of the heat carrier coke in the stirred tank is 1 to 30 minutes.

REFERENCES:
patent: 3962043 (1976-06-01), Schmalfeld et al.
patent: 4054492 (1977-10-01), Rammler et al.
patent: 6413415 (2002-07-01), Weiss et al.
patent: 197 24 074 (1998-12-01), None
Abstract—DE 197 24 074A—Publication Date Dec. 10, 1998.

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