Cryogenic process recycles SF6 gas

Power and automation technology group ABB has developed a patented technology for the comprehensive recycling of contaminated SF6 (sulfur hexafluoride) gas, based on a new energy-efficient cryogenic process. The new technology, announced in December 2011 and developed by an Australian team at ABB’s Moorebank, New South Wales facility, will be implemented at a dedicated SF6 gas-recycling centre at Moorebank. Australia will be the first country in a global rollout of this new technology.

Purity of recycled SF6 gas using the newly developed technology is ~99.99 per cent. According to ABB, this exceeds the purity that can be achieved using traditional methods and removes the need for costly and energy intensive gas destruction. Using recycled SF6 gas will help reduce carbon emissions and could result in a cost saving potential of up to 30 per cent.

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