Asphaltene hydrodesulfurization with small catalyst particles disposed in a guard chamber-main reactor system
Abstract
Abstract A HYDRODESULFURIZATION OF A CRUDE OIL OR A REDUCED CRUDE CONTAINING THE ASPHALTENE FRACTION PROCEEDS AT UNEXPECTEDLY LOW TEMPERATURES BY UTILIZING A SUPPORTED GROUP VI AND GROUP VIII METAL-CONTAINING HYDRODESULFURIZATION CATALYST WHEN THE CATALYST PARTICLES ARE VERY SMALL AND HAVE A DIAMETER BETWEEN ABOUT 1/20 AND 1/40 INCH AND WHEN THE CATALYST IS DISPOSED IN A GUARD CHAMBER-MAIN REACTOR SYSTEM. THE APPORTIONING OF THE TOTAL CATALYST BETWEEN THE GUARD CHAMBER AND THE MAIN REACTOR AND THE FREQUENCY OF RENEWEL OF THE GUARD CHAMBER ARE ESTABLISHED ACCORDING TO THE DISCLOSED EQUATIONS TO MINIMIZE THE PRESSURE DROP ACROSS THE CATALYST BY MAINTAINING ON STREAM AT A GIVEN TIME A MINIMUM PROPORTION OF THE TOTAL CATALYST. THE EQUATIONS HAVE PARTICULAR APPLICABILITY TO THE HYDRODESULFURIZATION PROCESS BUT THEY CAN ALSO BE APPLIED TO OTHER PROCESSES.
Inventors
- 👤 Malcolm D Fraser
- 👤 Allen E Somers
Bibliographic Details
Claims Analysis
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