Patent ID: 9067087
Filing Date: 2015-06-30
Classification: A62B,C25B,Y02E

Abstract:
1. A method using an electrochemical process to remove gaseous carbon dioxide (CO 2 ), water vapor, and heat from air and to generate a stream of oxygen (O 2 ) gas and a stream of concentrated CO 2 gas, comprising: circulating a hydroxide solution through a first gas-liquid contactor; contacting, in the first gas-liquid contactor, the hydroxide solution with air flowing through the first gas-liquid contactor to remove CO circulating the first carbonate solution through an electrochemical cell to convert the first carbonate solution into the hydroxide solution; recirculating the hydroxide solution from the electrochemical cell back through the first gas-liquid contactor; generating hydrogen (H circulating a bicarbonate solution through a second gas-liquid contactor, separate from the first gas-liquid contactor; contacting, in the second gas-liquid contactor, the bicarbonate solution with the H circulating the second carbonate solution through the electrochemical cell to convert the second carbonate solution into the bicarbonate solution; recirculating the bicarbonate solution from the electrochemical cell back through the second gas-liquid contactor; and generating the stream of O