이산화탄소 분리용 세라믹 중공사 접촉막 모듈 기술 개발 (Development of Ceramic Hollow Fiber Membrane Contactor Modulesfor Carbon Dioxide Separation)

서지정보

· 발행기관 : 한국기후변화학회
· 수록지 정보 : 한국기후변화학회지 / 7권 / 3호 / 249 ~ 256페이지
· 저자명 : 박정훈, 이홍주, 채진웅

초록

Porous Al2O3 hollow fiber membranes were successfully prepared by dry-wet spinning/sintering method. The SEM image shows that the Al2O3 hollow fiber membrane consists mostly of sponge pore structure. The contact angle and the breakthrough pressure were 126 ° and 1.91 bar, respectively. This results indicate that the Al2O3 hollow fiber membranes were successfully modified to hydrophobic surface. The hydrophobic modified Al2O3 hollow fiber membranes were assembled into a membrane contactor system to separate CO2 from a model gas mixture of the flue gas at elevated gas velocity. The CO2 absorption flux was enhanced when the gas velocity increased from 1× 10—3 to 6×10—3 m/s. Whereas the CO2 absorption flux was decreased with the number of hollow fiber membrane of a module because of the concentration polarization. Furthermore, we developed an lab-scale Al2O3 hollow fiber membrane contactor modules and their system (i.e., CO2 absorption using the Al2O3 membrane and monoethanolamine (MEA)) that could dispose of over 0.02 Nm3/h mixture gas (15% CO2) with the removal efficiency higher than 95%. The results can be useful in a field of the membrane contactor for CO2 separation, helping to design and extend a equipment.

영어초록

Porous Al2O3 hollow fiber membranes were successfully prepared by dry-wet spinning/sintering method. The SEM image shows that the Al2O3 hollow fiber membrane consists mostly of sponge pore structure. The contact angle and the breakthrough pressure were 126 ° and 1.91 bar, respectively. This results indicate that the Al2O3 hollow fiber membranes were successfully modified to hydrophobic surface. The hydrophobic modified Al2O3 hollow fiber membranes were assembled into a membrane contactor system to separate CO2 from a model gas mixture of the flue gas at elevated gas velocity. The CO2 absorption flux was enhanced when the gas velocity increased from 1× 10—3 to 6×10—3 m/s. Whereas the CO2 absorption flux was decreased with the number of hollow fiber membrane of a module because of the concentration polarization. Furthermore, we developed an lab-scale Al2O3 hollow fiber membrane contactor modules and their system (i.e., CO2 absorption using the Al2O3 membrane and monoethanolamine (MEA)) that could dispose of over 0.02 Nm3/h mixture gas (15% CO2) with the removal efficiency higher than 95%. The results can be useful in a field of the membrane contactor for CO2 separation, helping to design and extend a equipment.

참고자료

· 없음