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Air Products and CNOOC bring world-first ASU on-stream

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Air Products has announced that China’s first air separation unit (ASU) facility that uses liquefied natural gas (LNG) cold energy to produce industrial gases has been brought on-stream.

Located in Putian, the plant is a joint venture with CNOOC Energy Technology & Services Limitedand is capable of producing over 600 tons per day (tpd) of liquid oxygen, nitrogen and argon to supply the fast growing industrial gases market in Fujian Province – especially in the Xiamen, Putian, Fuzhou triangle.

Air Products formed the joint venture in 2007 with CNOOC Energy Technology & Services Limited, a wholly-owned subsidiary of China National Offshore Oil Corporation (CNOOC), one of the largest state-owned oil companies and a leading offshore oil and gas producer in the country.

The first of its kind in China, the ASU plant is designed to liquefy air at low temperatures by using cold energy released during the LNG re-gasification process to produce industrial gas products. The plant brings tremendous environmental and energy efficiency benefits compared to conventional processes as this ASU plant consumes approximately 50% less electricity by using the LNG cold energy to aid in liquefaction and to produce chilled glycol.

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