Title :
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
Abstract :
The investigation of gas recovery from N 2/SF 6 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 CO 2/SF 6, He/SF 6 and even for ternary mixtures such as N 2/CO 2/SF 6 without any modification in the system, where we expect much better performance in comparison with N 2/SF 6.
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;
Journal_Title :
Electrical Insulation Magazine, IEEE
DOI :
10.1109/MEI.2002.1014965
