Dry carbon dioxide capturing device with improved energy efficiency

• Main Authors: LEE, SEUNG-YONG, LEE, DONG-HO, JIN, GYONG-TAE, PARK, JAEHYEON, PARK, YOUNGOL, JO, SUNG-HO, YI, CHANG-KEUN, SHUN, DOWON, BAE, DAL-HEE, MOON, JONG-HO, RYO, HO-JUNG
• Format: Patent
• Language: English; French; German
• Published: 17.04.2013
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

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.