The present disclosure is directed to a process that allows dry sorbents to remove a target constituent, such as carbon dioxide (CO.sub.2), from a gas stream. A staged fluidized bed separator enables gas and sorbent to move in opposite directions. The sorbent is loaded with target constituent in the separator. It is then transferred to a regenerator where the target constituent is stripped. The temperature of the separator and regenerator are controlled. After it is removed from the regenerator, the sorbent is then transferred back to the separator.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
A portion of the project under which this invention was developed was supported by the Department of Energy (DOE) under Award number DE-FE0004343. This project was funded by the DOE National Energy Technology Laboratory's Innovations for Existing Plants (IEP) Program.