Desulphurization
AssigneeImperial Chemical Industries PLC
InventorPatrick J. Denny
Life of this patent
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Abstract
Fluid streams, particularly natural gas, are desulphurized by passage over a bed of a particulate absorbent containing zinc oxide at below 120.degree. C. In order to increase the absorption capacity of the absorbent, the water and temperature of the fluid stream is controlled so that the stream both entering and leaving the absorbent bed has a degree of saturation of at least 30%, but does not contain a separate liquid aqueous phase.
Claims7
A process for the removal of hydrogen sulphide from a gaseous stream comprising passing the gaseous stream at a temperature below 120.degree. C. through a bed of a particulate zinc oxide-containing absorbent having a surface area above 50 m.sup.2.g.sup.-1, characterised by controlling the water content and the temperature of the gaseous stream such that the degree of saturation of the gaseous stream with water is at least 30%, both as it enters and leaves the bed, but is such that there is no separate liquid aqueous phase in the stream entering and leaving the bed.
Dependencies are inferred from the claim text.