Acidic gas removal from a post combustion process stream
AssigneesPetroliam Nasional Berhad (Petronas), Dalian Institute of Chemical Physics, Chinese Academy of Sciences
InventorsSiti Hajar Bt KHALIT, Ven Chian QUEK, Khairul B ROSTANI, Yiming CAO, Guodong KANG
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Abstract
A method for removing acidic gases from a post combustion process stream, the method comprising the steps of: receiving the post combustion process stream into hollow fibres of at least one MBC cell, each hollow fibre gas permeable, liquid impermeable; passing a lean solvent in contact with an external surface of said hollow fibres; exchanging said acidic gas into the solvent through the hollow fibre; venting a treated lean gas stream; exiting an acidic gas rich solvent.
Claims9
A method for removing acidic gases from a post combustion process stream, the method comprising the steps of:
- receiving the post combustion process stream into hollow fibres of at least one MBC cell, each hollow fibre gas permeable, liquid impermeable;
- passing a lean solvent in contact with an external surface of said hollow fibres;
- exchanging said acidic gas into the solvent through the hollow fibre;
- venting a treated gas lean stream;
- exiting an acidic gas rich solvent.
A gas exchange system, said system comprising:
- at least one membrane contactor cell;
- said at least one membrane contactor cell having a bore in which is placed a gas permeable, liquid impermeable, hollow fibre or opposite configuration where liquid is placed in the bore;
- each hollow fibre having a membrane inlet arranged to receive a gas from an inlet chamber and a membrane outlet for venting said gas;
- said bore is arranged to flow a lean solvent in contact with an external surface of the hollow fibre so as to permit the exchange of gas through said gas permeable, liquid impermeable membrane, and;
- a pressure differential control system, said pressure differential control system arranged to monitor a pressure of the post combustion process stream and the lean solvent;
- wherein said pressure differential control system is arranged to control the solvent and process stream, and maintain a pressure differential whereby the lean solvent pressure is greater than the gas pressure.
Dependencies are inferred from the claim text.