Recovery of SF/sub 6/ from N/sub 2//SF/sub 6/ gas mixtures by using a polymer membrane

Author

Yamamoto, Osamu ; Takuma, Tadasu ; Kinouchi, Masayuki

Author_Institution

Kyoto Univ., Japan

Volume

18

Issue

3

fYear

2002

Firstpage

32

Lastpage

37

Abstract

The investigation of gas recovery from N₂/SF₆ gas mixtures using a polymer membrane has been reported. It has been shown that the purity of recovered gas, the recovery loss, and the gas handling speed depend on various parameters such as original gas mixing ratio, gas feeding pressure, gas flow rate, and temperature of the membrane. A gas recovering system with two membrane separators connected in cascade has proved to be very efficient in attaining high purity in a recovered gas, with negligibly small recovery loss and high handling speed for practical use. Furthermore, this system could be applied for CO₂/SF₆, He/SF₆ and even for ternary mixtures such as N₂/CO₂/SF₆ without any modification in the system, where we expect much better performance in comparison with N₂/SF₆.

Keywords

SF/sub 6/ insulation; gas mixtures; membranes; nitrogen; recycling; separation; sulphur compounds; CO/sub 2/; CO/sub 2/-SF/sub 6/; He; He-SF/sub 6/; N/sub 2/; N/sub 2/-CO/sub 2/-SF/sub 6/; N/sub 2/-SF/sub 6/; N/sub 2//SF/sub 6/ gas mixtures; SF/sub 6/; SF/sub 6/ gas recovery; binary mixtures; cascade-connected membrane separators; electric power apparatus; electronegative gas; gas flow rate; handling speed; membrane feeding pressure; membrane separation method; membrane temperature; polymer membrane; pressurized gas mixture; recovery loss; ternary mixtures; Biomembranes; Electronics industry; Fluid flow; Gas industry; Gas insulation; Global warming; Magnesium; Plastics industry; Polymers; Temperature;

fLanguage

English

Journal_Title

Electrical Insulation Magazine, IEEE

Publisher

ieee

ISSN

0883-7554

Type

jour

DOI

10.1109/MEI.2002.1014965

Filename

1014965