Gas oil purification
AssigneeBritish Gas Corporation
InventorsHaydn S. Davies, James H. Garstang, Cyril Timmins
Life of this patent
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Abstract
Hydrocarbon oils, particularly oils which have a high boiling temperature, are treated to remove organic sulphur compounds by subjecting a mixture of a hydrogenating gas, e.g. a gas containing at least 90% v/v hydrogen and is substantially free from carbon oxides, and partially vaporized oil to a hydrogenation reaction over a known hydrogenation catalyst and thereafter passing the resulting liquid/vapor mixture which also contains hydrogen sulphide over zinc oxide, thereby to remove the hydrogen sulphide.
Claims7
A process for the removal of organic sulphur compounds from hydrocarbon oils having a final boiling point within the range of 200.degree.-550.degree. C., which process comprises the steps of:
- (i) partly vaporising the oil,
- (ii) contacting the resulting mixture of partly vaporised oil and unvaporized liquid oil, and a hydrogen-containing gas with a hydrogenation catalyst at a temperature within the range of 300.degree.-420.degree. C., thereby to hydrogenate the organic sulphur compounds to hydrogen sulphide, and
- (iii) absorbing the hydrogen sulphide thus produced by passing the vaporized oil, liquid oil, hydrogen-containing gas and hydrogen sulphide over zinc oxide, said steps (i), (ii), and (iii) being conducted under conditions which maintain part of the hydrocarbon oil in the liquid phase.
Dependencies are inferred from the claim text.