SF6 가스 회수 공정들의 특성 연구

조훈; 우대식; 최유미; 한명완; Hoon Cho; Daesik Woo; Yumi Choi; Myungwan Han

Clean Technology, Vol.17, No.4, 329-335, December, 2011

Export Citation

SF6 가스 회수 공정들의 특성 연구

Characteristics of SF6 Gas Recycling Processes

조훈, 우대식, 최유미, 한명완 ^†

충남대학교 공과대학 화학공학과, 305-764 대전광역시 유성구 궁동 220번지

Hoon Cho, Daesik Woo, Yumi Choi, and Myungwan Han^†

Department of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea

E-mail:

초록

SF6가스는 지구 온난화 가스로 알려져 있다. SF6가스의 지구온난화 기능은 이산화탄소에 비하여 22,000배 이다. SF6가스 회수기술은 환경 및 경제적 측면에서 주요한 기술이다. 본 연구에서는 SF6가스를 현장에서 용이하게 회수할 수 있는 여러 공정들로서 액화공정, 결정화 공정, 증류 공정에 대하여 연구하였다. 이들 공정들을 Aspen plus를 이용하여 공정 모사 및 최적화를 행하였다. 제품의 규격과 회수율을 만족하면서 에너지 소모량을 최소화하도록 최적화 문제를 구성하였다. 이 최적화 결과들을 바탕으로 공정성능들을 비교하였다. 각 공정변수들이 공정 성능에 미치는 영향을 조사하였고, 제품의 순도와 회수율의 변화에 따른 최적 조업조건의 변화를 살펴보았다.

SF6 gas is well known as a global warming gas. Global warming potential of SF6 gas is 22,000 times higher than that of CO2. Recycling of SF6 gas is an essential technology for the sake of the environment and the economy. The recovery processes of SF6 gas studied in this work were liquefaction, distillation, and crystallization processes because these processes were thought to be easily carried to the fields for recycling waste SF6 gas. The processes were simulated and optimized using Aspen plus. The optimization problems were formulated to minimize energy consumption with satisfying product specification and desired recovery. The performance of the processes was compared based on the optimization results. Effects of major process variables on the recovery performance were investigated and optimal operation guide for changing product specification and product recovery was provided.

Keywords:SF6;Liquefaction process;Distillation process;Crystallization process

[References]

Timofeev VV, Lunin BS, Mordkovich NY, Zhitnev YN, Laser Chem., 10, 159 (1989)
Jannick P, “A Novel Purification Process for Used SF6 from Electrical Installations,” International Conference on SF6 and the Environment, December 1-3 (2004)
Lee SH, Park NK, Yoon SH, Chang WC, Lee TJ, Clean Technol., 15(4), 273 (2009)
Bartos B, Marks J, Kantamaneni R, Laush C, “Measured SF6 Emissions from Magnesium Die Casting Operations,” Presented at the 132ND TMS Annual Meeting, March 2-6 (2003)
Lee JY, Yeo YK, Moon HM, Park DS, Korean J. Chem. Eng., 17(2), 252 (2000)

[Related Articles]

[1] Timofeev VV, Lunin BS, Mordkovich NY, Zhitnev YN, Laser Chem., 10, 159 (1989)

[2] Jannick P, “A Novel Purification Process for Used SF6 from Electrical Installations,” International Conference on SF6 and the Environment, December 1-3 (2004)

[3] Lee SH, Park NK, Yoon SH, Chang WC, Lee TJ, Clean Technol., 15(4), 273 (2009)

[4] Bartos B, Marks J, Kantamaneni R, Laush C, “Measured SF6 Emissions from Magnesium Die Casting Operations,” Presented at the 132ND TMS Annual Meeting, March 2-6 (2003)

[5] Lee JY, Yeo YK, Moon HM, Park DS, Korean J. Chem. Eng., 17(2), 252 (2000)