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Modeling and Simulation of Sulfur Hexafluoride (SF6) Purification Process

Department of Chemical Engineering, Hanyang University, 17 Haengdang-dong, Sungdongku, Seoul 133-791, Korea 1Daesung Cryogenic Research Institute, Daesung Sanso Co., Ltd., Korea
Korean Journal of Chemical Engineering, March 2000, 17(2), 252-256(5), 10.1007/BF02707153
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Abstract

Liquid sulfur hexafluoride (SF6) contains carbon tetrachloride_x000D_ (CF4) and air as main impurities. It is very difficult to remove these impurities by_x000D_ using a catalyst column or an adsorption column. In this work a new purification method_x000D_ SF6 mixture based on batch distillation is proposed. Experimental study showed good_x000D_ purification performance, where SF6N50 was obtained from SF6N30 feed._x000D_ In the modeling of the batch purification process of SF2 mixture, the K-value was_x000D_ calculated based on the regular solution theory and a short cut method was employed. Results of_x000D_ simulations showed good agreement with thoes of experiments.

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