Linde brings 6 air separation units onstream in China

Linde brings 6 air separation units onstream in China

7:52 AM, 4th January 2017
Linde logo
Air separation units near Yinchuan City, China.

MUNICH, GERMANY: The Linde Group has brought six major air separation units (ASU) onstream for its customer, Shenhua Ningxia Coal Industry Group Co Ltd in Lingwu in Northwest China.

Shenhua Ningxia is a member of Shenhua Group Co Ltd, the largest coal-producing company in China, whose activities include the production of coal-derived chemicals. Linde was awarded the contract to build the units in February 2013.

Each of the six air separation units has a production capacity of around 100,000 standard cubic metres of gaseous oxygen per hour (Nm3/h). Shenhua Ningxia requires the oxygen for its coal-to-liquid (CTL) complex at the Ningdong Energy Chemical Base to produce four million tonnes of CTL products – mainly liquid fuel derived from coal – per year. This makes it one of the largest coal-to-liquid projects worldwide.

To realise this project, Linde’s engineering centres in Pullach (Germany) and Hangzhou (China) collaborated with its Schalchen (Germany) and Dalian (China) production locations. Collaboration with local contractors ran equally smoothly. It took just four months to assemble all six rectification coldboxes with their 2,000-plus tonnes of steel structures and various vessels.

In addition to the 6 plants started up by Linde, a further six ASUs are set to be soon completed in Lingwu. This will make it the world’s largest connected air separation complex with an overall oxygen production capacity of approximately 1.2 million Nm3/h. 

 “CTL complexes on this scale require air separation units that can similarly offer benchmark capacity and efficiency performance. Our wealth of experience in large-scale plant engineering and our network of global and local partners, we were able to successfully complete this project on time. These performance capabilities provide further proof of our leading market position in the ASU segment,” said John van der Velden, a member of the board of directors of Linde Engineering Division.

© Worldofchemicals News 



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