화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.21, No.1, 22-32, March, 2015
Export Citation
음이온교환수지를 이용한 CO2 흡수 공정시 발생하는 열안정성염 처리 특성
Characteristics of Heat Stable Salts Treatment Using Anion Exchange Resins in CO2 Absorption Process
박경빈, 조준형, 전수빈1, 임유영, 오광중†
  • 부산대학교 사회환경시스템공학부 환경공학과, 609-836 부산광역시 금정구 부산대학로 63번길 2
  • 1부산대학교 하이브리드소재 솔루션 국가핵심연구센터, 609-836 부산광역시 금정구 부산대학로 63번길 2
Kyung-Bin Park, Jun-Hyoung Cho, Soo-Bin Jeon1, You-Young Lim, and Kwang-Joong OH†
  • Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-836, Korea
  • 1National Core Research Center for Hybrid Materials Solution, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-836, Korea
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초록
본 연구에서는 CO2를 흡수하는 아민용액에서 성능 저하의 원인이 되는 HSS를 제거하기 위해 음이온교환수지를 이용한 HSS의 처리특성을 제시하고자 한다. 최적 HSS 제거효율은 수지 SAR10을 0.05 g/mL 사용할 때 316 K, pH 12에서 96.1%로 나타났다. 또한 최적 수지 재생효율은 NaOH 농도 3 M, 316 K에서 78.8%로 나타났다. HSS의 흡착은 Freundlich 모델에 가장 잘 부합하였으며 흡착 동력 크기를 보았을 때 수지를 이용한 HSS의 제거가 용이한 것으로 나타났다. 흡착 선택계수의 경우 전자가, 원자가가 클수록 높게 나타났고 탈착 선택계수는 이와 반대의 경향을 나타냈다. 연속식 HSS 처리시 오염시료 13.3 BV를 최적으로 처리할 수 있었으며, 5.2 BV가 최적 NaOH 소모량으로 나타났다.
In this study, we studied the characteristics of ion exchange for treatment of HSS (heat stable salts) which cause performance reduction in CO2 gas capture amine solution using anion exchange resins. The optimum HSS removal efficiency, 96.1% was obtained when using strong base anion exchange resin SAR10 at dosage 0.05 g/mL, 316 K, pH 12 and the best resin regeneration efficiency, 78.8% was obtained using NaOH solution of 3 M at 316 K. The adsorption data were described well by the Freundlich model and the sorption intensity(n) was 2.0951 lying within the range of favorable adsorption. The adsorption selectivity coefficients were increased by increasing valences and size of ion and desorption selectivity coefficients showed a contradictory tendency to adsorption selectivity coefficients. By continuous HSS removal experiments, 13.3 BV of HSS contaminated solution was effectively treated and the optimum NaOH solution consumption was 5.2 BV to regenerate resins.
Keywords:CO2 adsorption process;Heat stable salts;Anion exchange resin
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