Systems and methods for treating carbon dioxide

摘要

A heat exchange assembly (12) for treating carbon dioxide (CO 2 is described. The heat exchange assembly includes a housing (68) that includes an inlet (72), an outlet (74), and an inner surface (76) that defines a cavity (78) extending between the inlet and the outlet. The housing is configured to receive solid CO 2 through the inlet. At least one heat exchange tube (70) extends through the housing. The heat exchange tube is oriented to contact solid CO 2 to facilitate transferring heat from solid CO 2 to a heat exchanger fluid being channeled through the heat exchange tube to facilitate converting at least a portion of solid CO 2 into liquid CO 2 . The heat exchange assembly is configured to recover a refrigeration value from the solid CO 2 and transfer at least a portion of the recovered refrigeration value to a flue gas.