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| Prevention of
global warming: Recovery and recycling of SF6 |
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Sulfur hexafluoride
(SF6) gas became a substance to be regulated at the Kyoto
Conference for Preventing Global Warming, and it will no
longer be possible to discharge this substance into the
atmosphere.
Tomoe Shokai has developed recovery and processing business
for SF6 gas such as removal of gas insulation equipment to
prepare for the banning of SF6 gas discharge into the atmosphere.
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Feature |
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Removal of gas insulation equipment ® 0.005
MPa×abs (more than 99% recovery ratio) |
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Gas equipment maintenance ® 0.015
MPa×abs (more than 97% recovery ratio) |
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Gas disposal method ® Infusing gas
into a refinery line to recycle it after it is carried
in by gas companies |
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Gas recovery and processing for equipment,
including other manufactures’ GIS/GCB, using
SF6 gas insulation (example: ion accelerator, electron
microscope etc.) |
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Flow of SF6
gas recovery and processing |
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Processing of
recovered gas |
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As for the recovered
gas processing method employed at a gas manufacturer, a complete
recycle processing is carried out by, first, confirming impurities
with gas analysis. Then, after oil, solid and air contents
and so on are removed, recovered gas is send to a SF6 gas
production line.
The processing flow for recovered gas is as follows: |
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| Decomposed gas existing |
Recovered gas is inserted to a production
line after decomposed gas is removed with a decomposed
gas removing equipment. |
| Purity less than 90% |
Recovered gas is inserted into a production
line after air content and so on are removed in liquefied
condition. |
| Purity greater than 90% |
Recovered gas is inserted into a production
line as is and refined in the line. |
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Business development
with gas processing |
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Recycle
processing realized by tie-ups among HESCO, Tomoe Shokai
and Kanto Denka Kogyo |
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Inquiries should
be directed to: |
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Abe or Aitani (personnel in charge)
TEL 029-295-2571
FAX 029-295-2843
E-mail sf6@tomoeshokai.co.jp |
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