Title :
SF6 reclaimer from SF6/N2 mixtures by gas separation with molecular sieving effect
Author :
Toyoda, Mitsuru ; Murase, Hiroshi ; Imai, Takahiro ; Naotsuka, Hiromi ; Kobayashi, Akio ; Takano, Kazukiyo ; Ohkuma, Kouichi
Author_Institution :
High Voltage Switchgear Dept., TM T&D Corp., Kawasaki, Japan
fDate :
4/1/2003 12:00:00 AM
Abstract :
This paper discusses the various methods for sulfur hexafluoride (SF6) separation from a mixture of low concentrations of SF6 in N2 pressure swing adsorption (PSA) with a suitable kind of synthetic zeolite, which has the expected molecular sieving effect. This molecular sieving effect, derived from molecular size difference between SF6 and N2, is confirmed by the difference between two equivalent volumes filled with SF6 and N2. Prototype equipment of SF6 separation and liquefaction, that is about 1 m cube in size and 150 kg in weight, has been assembled and tested. The ability of gas mixture handling is 13 l/min on average, and the SF6 content is reduced to 0.0% (undetectable level) in separated N2 to exhaust into the atmosphere.
Keywords :
SF6 insulation; adsorption; gas mixtures; liquefaction; nitrogen; separation; 1 m; 150 kg; N2 pressure swing adsorption; SF6; SF6 reclaimer; SF6-N2; SF6/N2 mixtures; equivalent volumes; gas mixture handling; gas separation; liquefaction; molecular sieving effect; molecular size difference; synthetic zeolite; Assembly; Atmosphere; Biomembranes; Chemical industry; Insulation; Polymers; Power industry; Prototypes; Sulfur hexafluoride; Testing;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2002.803691