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US 4,247,387 AGranted
Process for the continuous thermal cracking of hydrocarbon oils
AssigneeShell Oil Company
InventorMohammed Akbar
Life of this patent
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Abstract
A continuous process for thermal cracking of heavy hydrocarbon oil feed to residual products having improved stability comprises passing the feed under specified conditions through a thermal conversion zone having at least two mixing stages.
Claims9
A process for the continuous thermal cracking of residual hydrocarbon oils, which comprises
- heating the residual hydrocarbon oil feed and
- passing the total hot feed at a temperature in the range from 400.degree. to 500.degree. C. upwardly through an upright thermal conversion zone having at least 2 mixing stages, said zone comprising an unheated soaking vessel containing at least one of:
- (a) from 1 to 20 horizontal perforated plates, and (b) vertical sections with a hydraulic diameter in the range from 5 to 100 mm in which conversion zone the feed has an average residence time of between 5 to 60 minutes, and
- withdrawing cracked product from said conversion zone.
1 more element
Dependencies are inferred from the claim text.