Method of operating an unsaturated gas plant

Details Method of operating an unsaturated gas plant Method of operating an unsaturated gas plant

C - Chemistry, Metallurgy

10

G

196/207

C10G 17/00 (2006.01) C10G 53/02 (2006.01)

Patent

CA 2040763

F-5394 METHOD OF OPERATING AN UNSATURATED GAS PLANT ABSTRACT A method is disclosed for operating a refinery gas plant such as the unsaturated gas plant (USGP) of a catalytic hydrocarbon conversion process that results in a reduction of the corrosive effect of acid gases on the gas plant vessels and equipment. The method comprises contacting acidic hydrocarbon feedstreams to an unsaturated gas plant separator zone with lean acid gas absorbing absorbent in an absorbtion zone comprising at least one liquid absorber bed and one vapor absorber bed. The liquid and vapor absorber beds are located upstream of the separator zone. The feedstreams to the gas plant comprise unstabilized, or wild, liquid gasoline and liquid and vapor output streams from the liquid-vapor separator for inter stage wet gas compressor of the conversion process main fractionator. Accordingly, these feed streams are deacidified before separation in the USGP deethanizer- absorber, sponge absorber, and debutanizer. This also eliminates the need for deacidification of the gas plant product stream.

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