摘要:
Disclosed is a dry CO 2 capturing device with improved energy efficiency, which utilizes a difference in temperature between a regeneration operation of isolating CO 2 from an sorbent containing CO 2 absorbed therein and a pre-treatment operation of allowing H 2 O to be adsorbed to CO 2 . The dry carbon dioxide (CO 2 ) capturing device, includes a recovery reactor for recovering CO 2 , a recovery cyclone for discharging a gas while separating the CO 2 -captured solid sorbent only, a regenerator for receiving the CO 2 -captured solid sorbent and separating CO 2 captured in the solid sorbent, and a pre-treatment reactor for cooling the solid sorbent free from CO 2 , wherein a first heat exchanger is provided between the recovery cyclone and the regenerator to pass the CO 2 -captured solid sorbent therethrough, and a second heat exchanger is provided between the pre-treatment reactor and the regenerator to pass the solid sorbent free from CO 2 therethrough. The first and second heat exchanger include a first and second heat exchange jacket mounted thereon which are connected to each other in a closed loop state.
摘要:
Disclosed are an exhaust gas treating apparatus and a treating method for a carbon dioxide capture process, in which harmful substances remaining in the exhaust gas discharged from the conventional flue-gas desulfurization process are additionally removed for efficient performance of the carbon dioxide capture process. According to the exhaust gas treating apparatus for a carbon dioxide capture process, it has the effects of minimizing the installation space of desulfurization equipment and reducing the process cost. In addition, by keeping the contaminants contained in the gas introduced in the carbon dioxide capture equipment below a proper level, absorption performance can be improved as degradation of the absorbent used in the carbon dioxide capture process is prevented. After all, it has an advantage of preventing the pollution by the exhaust gas discharged into the atmosphere.