Clean Technology – Harnessing Opportunities
SF6 Recycling Plant
ABB Australia Pty Limited, NSW
ABB Australia Pty Limited, in conjunction with SN2 Pty Ltd has developed a patented technology for the comprehensive recycling of contaminated sulphur hexafluoride (SF6) gas, based on a new energy-efficient cryogenic process. The new technology has been successfully commercialised at a dedicated SF6 recycling plant ABB has established in Sydney, with international applications to commence shortly. The purity of recycled SF6 gas using the newly developed technology is about 99.99 percent and is in accordance with technical grade IEC 60376 (the standard for new gas), which enables SF6 to be reused again and again. Using recycled SF6 gas will help reduce carbon emissions and could result in a cost savings potential of up to 30 percent. In addition, a focus on delivering world best practice gas management of SF6, a high potential global warming gas, also delivers beneficial environmental outcomes. The technology closes the lifecycle of SF6 ensuring a minimal environmental footprint for this gas that is vital for the efficient, safe and reliable transmission of electricity.
Comments from Judges
This technology provides an effective means of recycling SF6. The quality of the recycled SF6 meets that required for the gas insulated switchgear, enabling it to be used without further purification. The new technology has been successfully commercialised at a dedicated SF6 recycling plant that ABB has established in Sydney, with international applications to commence shortly. Using recycled SF6 gas will help reduce carbon emissions and could result in cost savings. The five tonnes of SF6 that has been processed so far has saved nearly 60 million kg of CO2e. The judges commended ABB on a highly skilled technical solution to a problem material that provides environmental and economic benefits.