Coal gasification industry is a large user of oxygen. Oxygen is used as gasification agent of pulverized coal in the process of coal gasification, such as the powder gasification, per ton of synthesis ammonia consumes 500~900m3 of oxygen; Oxygen is used as an oxidant to convert solid coal into a combustible gas mixture. In the process of coal liquefaction, oxygen is used as a vehicle for the conversion of coal from hydrogen-depleted solid hydrocarbons to hydrogen-rich liquid hydrocarbons. The consumption of oxygen required to produce 1 ton of coal is at least 0.3 tons of oxygen per ton of coal, and may also reach 1 ton per ton of coal. So the production of 10 million barrels per day of

Xinglu won the nitrogen air separation EPC project of Haerbin Nestle program for Messer group in 2012. The program is located in Shuangcheng City in Haerbin where its average temperature in Winter is lower than -30degC. During project design and equipment manufacturing, more factors should be thought about, such as influence of low ambient temperature to metal material, cold air influence on compressor mechanical performance, sandstorm environment to feed air filter of compressor and high extraction based in required compressor by customer. Organized by cryogenic separation technology research center of our company, the above problems are solved through analysis together with design institution and customer. The plant has been accepted successfully. In the beginning of 2013, when it is the most frozen season in Haerbin, the plant run steadily after commissioning, each parameter is better than