이기용 김홍곤 정광덕 김창수 2024-01-20T17:33:57Z 2024-01-20T17:33:57Z 2021-09-06 2011-02 1738-7264 https://pubs.kist.re.kr/handle/201004/130666 SO_2 has been absorbed and separated selectively by an ionic liquid from SO_2/O_2 mixture decomposed from sulfuric acid during the thermochemical SI cycle for the water splitting. In order to design and operate high pressure SO_2/O_2 separation system, the solubility of SO_2 in [EMIm]EtSO_4 (1-ethyl-3-methylimidazolium ethylsulfate) has been measured by Magnetic Suspension Balance at high pressure and temperature. Based on the measured solubility, a pressurized separation system was set up and operated. 194 L/h of SO_2(SO_2:O_2=0.65:1) has been separated with 99.85% of O_2 at the vent of absorption tower, which is 22.7% of the theoretically ideal capacity of the system. This discrepancy results from the reduced contact between the gaseous SO_2 and the ionic liquid. Increased SO_2 supply, scale-up of the absorption column, and a faster ionic liquid circulation speed were suggested to improve the separation capacity. Korean 한국수소및신에너지학회 물분해 수소제조를 위한 SI cycle에서의 EMIm[EtSO_4]를 이용한 SO_2/O_2 분리공정 SO_2/O_2 Separation Process with EMIm[EtSO_4] in SI Cycle for the Hydrogen Production by Water Splitting Article 2 한국수소및신에너지학회논문집, v.22, no.1, pp.13 - 20 한국수소및신에너지학회논문집 22 1 13 20 kci ART001532300 황-요오드 싸이클 SO2_/O_2 separation [EMIm]EtSO_4 Magnetic suspension balance Pressure/temperature swing absorption SI cycle SO_2/O_2 분리 에틸메틸이미다졸륨에틸설페이트 자기부상저울 압력/ 온도 왕복변화 흡수