Although affected by the global financial crisis, the price of international crude oil has dropped sharply, but due to the increasingly exhausted international oil resources, the cost of crude oil as chemical raw materials will eventually increase significantly. Therefore, the development of coal chemical industry can effectively alleviate the contradiction between supply and demand of domestic oil products and ensure the safety of national oil supply.

China is short of oil resources and relies on import to a great extent. Although several companies have built projects with an annual output of 4.2 million tons of methanol and 3 million tons of dimethyl ether in Ordos. It is estimated that the coal to liquid project will form a scale of 10-20 million tons in 2015, and 40 million to 50 million tons in 2025. As the key equipment of coal chemical project, modern coal chemical type air separation equipment will become a new performance growth point of air separation industry with the development of modern coal chemical industry.