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Siemens Energy has received orders for the compressor trains for three LNG (liquefied natural gas) plants in China for liquefying synthetic natural gas. The customer is the Hangzhou Zhongtai Cryogenic Technology Corporation. This marks the fifth follow-up order for Siemens from this company. The Houma Tongsheng Yitong Natural Gas Company will operate one of the plants. These plants have a capacity of half a million standard cubic meters of gas per day. The machines will be handed over to the customer in June 2014, after a delivery period of only 12 months.

The compressor trains in the three plants each consists of a six-stage vertically-split compressor (barrel-type compressor) and a Siemens constant speed electric motor. This type of drive and control using inlet guide vane assemblies provides more efficient and reliable operation than conventional compressor solutions with throttle valve or speed control. The Siemens compressor trains compress the mixed refrigerant that cools the natural gas. The compressor trains will be entirely fabricated, assembled and packaged with the drives in Huludao, China. This enables Siemens to provide nearly the complete value-added for small LNG compressors based on international standards from China.

“Our worldwide compressor business profits from local engineering and production expertise. This also benefits our customers, who receive the same standards wherever they may be in the world. This allows us to flexibly and promptly serve the important LNG market for small and medium-size plants”, declared Lennart Nilsson, head of the Business Unit Compression within the Siemens Energy Sector. For plant capacities between 300,000 and 1.2 million standard cubic meters of gas per day, Siemens has developed and put into operation a pre-engineered compression concept.

“Excellent cooperation and the quality of the compressors fabricated in Huludao are what convinced us to order more machines from Siemens”, explained Zhang Youhu, General Manager of Hangzhou Zhongtai Cryogenic.