초록

The absorption capacity of a desulphurizing absorbent bed is increased by temporarily increasing the temperature of the absorbent bed by at least 50°C. from the normal operating temperature to a maximum temperature not in an excess of 500°C.

대표청구항 ▼

A method of removing hydrogen sulphide from a liquid or gaseous feedstock containing hydrogen sulphide as an impurity wherein the feedstock is passed through a bed of a desulphurising absorbent consisting essentially of zinc oxide and having a surface area above 20 m2g-1, at a temperature in the ran

A method of removing hydrogen sulphide from a liquid or gaseous feedstock containing hydrogen sulphide as an impurity wherein the feedstock is passed through a bed of a desulphurising absorbent consisting essentially of zinc oxide and having a surface area above 20 m2g-1, at a temperature in the range -10°to +200°C., and temporarily, for a period of 1 hour to 1 day, increasing the temperature of the absorbent bed from said temperature in the range -10°to +200°C. by at least 50°C. to a temperature not in an excess of 300°C.