CO2 capture from pre-combustion processes—Strategies for membrane gas separation

Abstract

The application of membrane gas separation to CO2 capture from a coal gasification process is one potential solution to reduce greenhouse gas emissions. This review considers the potential for either H2-or CO2-selective membranes in an integrated gasification combined cycle (IGCC) process. In particular, the advantages and disadvantages of metallic, porous inorganic and polymeric membranes are considered. This analysis is extended to consider membrane technology as an enhancement to the water gas shift reaction, to drive the production of hydrogen above the thermodynamic limit. The review concludes with a brief overview of the economics of incorporating membrane gas separation into the IGCC process and gives an indication of the potential economic use of membrane gas separation technology in the IGCC process.

Plasticization and Swelling in Polymeric Membranes in CO2 Removal from Natural Gas

“…Zeolite membranes are porous and exhibit a good performance in gas separation due to their chemical resistance and hydrophobic behavior. Nonporous membranes are suitable for high-temperature applications [3,25,77]. Inorganic membranes demonstrate high resistance to deformation under harsh operating conditions.…”

Dynamic simulation of MEA absorption process for CO2 capture from power plants

“…Membranes with high selectivity and permeability for the component to be separated are more suitable for this technology. Gas separation membranes have been commercially used to remove CO 2 from natural gas streams which have high concentration of CO 2 and are commonly used for H 2 recovery in refineries (Scholes et al, 2010). There are many different types of membrane materials such as polymeric, metallic and ceramic that may find application in CO 2 capture systems.…”

Membrane-Cryogenic Post-Combustion Carbon Capture of Flue Gases from NGCC

“…Traditionally, membrane-based carbon capture has only been considered for natural gas sweetening before NGCC [3] and for pre-combustion capture before the IGCC process [4], while post-combustion capture has only been studied in depth using solvent absorption [5][6][7][8][9], or as a novel Integrated Gasification Combined Cycle (IGCC) process with flue gas recycling [10]. This is because for NGCC the flue gas has a low CO 2 partial pressure which has previously been seen as a limitation for membrane gas separation.…”