Fluids purification
AssigneeImperial Chemical Industries PLC
InventorAnthony Miles Robert Difford
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Abstract
A process fluid is purified of strongly acidic impurities, preparatory to treatment over a catalyst or over a hydrogen sulphide absorbing material, by contact with one or more alkali metal aluminates, preferably a beta alumi aluminate. Such aluminates have a high capacity for absorbing hydrogen halides. The process fluid is especially a naphtha hydrocarbon to be reacted with steam to give a gas of high methane content.
Claims9
In a process for treating a gaseous process fluid over a solid catalytic material, solid hydrogen sulphide absorbing material, or both, the improvement which comprises contacting said gaseous process fluid at a temperature up to 500.degree.C with discrete pieces of one or more alkali metal aluminates in the beta form, prior or simultaneous to treatment with said catalytic or absorbing material whereby the access of strongly acidic impurities in the fluid to said catalytic or absorbing material is diminished or prevented.
Dependencies are inferred from the claim text.