Pressure controlled membrane gas separation system with permeate recirculation

Abstract

System for membrane separation of a gas mixture, characterized in that it comprises:- at least one flow control device (1) for introducing the gas mixture to be separated, which is in flow connection with a gas separation recirculation circuit, where the gas separation recirculation circuit comprises in order:- a tank (2) connected to the flow control device (1) for statically mixing gases,- a pressure control element (3) connected to the tank (2),- a gas separation membrane (4) connected to the pressure control element (3),- a control valve (5) located on the gas separation membrane (4) for discharging the retentate,- a compressor (6) connected to the gas separation membrane (4), and- a distribution system (7) located between the compressor (6) and the tank (2), which has an overpressure control valve for discharging permeate.