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U.S. Department of Energy
Office of Scientific and Technical Information

Method for treating heavy hydrocarbon oils. [distillation]

Patent ·
OSTI ID:5416167
A method for the transformation of heavy hydrocarbons comprises a preheating stage for vaporizing the raw hydrocarbon and a main heating stage which consists in heating, in a very regular and gradual manner, the vapors formed during the preheating stage the gaseous hydrocarbons produced during the main heating stage being successively submitted to the action of catalyzers. The maximum temperature during heating is maintained between 500/sup 0/C and 700/sup 0/C. A number of successive cooling stages are included to which the mixture of gases and vapors issuing from the main heating stage are subjected. The cooling medium used in the first cooling stage is boiling water at a predetermined superatmospheric pressure so that the sudden drop in the temperature of the gases and vapors through the first cooling stage is at least 250/sup 0/C. The condensate in each cooling stage, from the second stage on, is reheated and revaporized and then again submitted to the action of the previous cooling stage.
Assignee:
TIC; EDB-78-030031
Patent Number(s):
US 1779829
OSTI ID:
5416167
Country of Publication:
United States
Language:
English