Antifoam to achieve high conversion in hydroconversion of heavy oils
AssigneePetro-Canada Inc.
InventorsAnil K. Jain, Barry B. Pruden, Dennis Lambiris, Serge Rivard, Dirkson D. S. Liu
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Abstract
A process for the conversion of a heavy hydrocarbon oil in the presence of hydrogen and a catalyst or additive is described. It is shown that conversion can be increased by injecting an anti-foaming agent or a solution of anti-foaming agent in light oil into the reactor. Significantly better results are obtained when the anti-foam or the solution of anti-foam is injected directly into the top section of the reactor.
Claims11
In a process for hydrocracking heavy hydrocarbon oil wherein a slurry of said heavy oil and an additive or catalyst is subjected to hydroconversion conditions in the presence of hydrogen in a vertical hydroconversion column such that a liquid/gas interface is formed in an upper section of said column and foaming conditions are created in the column, said foaming conditions reducing the efficiency of the hydrocracking process, the improvement which comprises injecting an anti-foaming agent into a region within the upper 30% of the hydrocracking column height such that it is distributed to the liquid/gas interface whereby the formation of foaming conditions within the column is substantially reduced.
Dependencies are inferred from the claim text.