Patent ID: 11918970
Assignee: ENERGY AND ENVIRONMENTAL RESEARCH CENTER FOUNDATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A method of regenerating a used CO2-capture sorbent, the method comprising:
hydrolyzing a metal halide salt to form a hydrohalic acid and a hydroxide salt of the metal in the metal halide salt, the metal comprising an alkaline earth metal or an alkali metal;
reacting the used CO2-capture sorbent with the hydroxide salt, to form a carbonate salt of the metal in the metal halide salt; and
reacting the hydrohalic acid with the carbonate salt, to form CO2 and the metal halide salt, wherein at least some of the metal halide salt formed from the reacting of the hydrohalic acid with the carbonate salt is recycled as at least some of the metal halide salt in the hydrolyzing of the metal halide salt to form the hydrohalic acid and the hydroxide salt.