Carbon capture and storage is one of the potential options for reducing CO2 emissions from coal-fired power plants while preserving their operation.Mathematical modeling was carried out for a one-stage membrane process of carbon dioxide capture from the flue gases of coal-fired power plants using commercial gas separation membranes.Our calculations show that highly CO2-permeable membranes provide similar characteristics with respect to the separation Inlet Hose process (e.g., a specific area of membrane and a specific level of electrical energy consumption) despite the significant variation in CO2/N2 and H2O/CO2 selectivity.
Regarding the development of processes for the recovery of CO2 Display Boards from flue gas using membrane technology, ensuring high CO2 permeance of a membrane is more important than ensuring high CO2/N2 selectivity.The presence of water vapor in flue gas provides a higher driving force of CO2 transfer through the membrane due to the dilution of CO2 in the permeate.A cross-flow membrane module operation provides better recovery of CO2 in the presence of water vapor than a counter-current operation.