Patent ID: 8419828

Claim:
A process for the removal of gaseous acidic contaminants from a gaseous hydrocarbonaceous feedstream comprising such gaseous acidic contaminants, the process comprising: 1) providing the hydrocarbonaceous feedstream at a pressure between 30 and 120 bara, 2) contacting the hydrocarbonaceous feedstream with a membrane to obtain a hydrocarbon rich retentate and an acidic contaminants rich permeate, 3) contacting the hydrocarbon rich retentate obtained in step 2) with a second membrane to obtain a hydrocarbon rich retentate and an acidic contaminants rich permeate, 4) compressing the acidic contaminants rich permeate obtained in step 3) up till a pressure between 30 and 120 bara, and 5) mixing the compressed permeate obtained in step 4) with the feedstream of step 1) further comprising obtaining the hydrocarbonaceous feedstream from a gaseous feed comprising hydrocarbons and acidic contaminants by contacting the gaseous feed with a membrane to obtain the hydrocarboneous feedstream and an acidic contaminants rich permeate.