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
synthetic fuel device needs 10 to 20 sets of parallel installed oxygen plant with the capacity of 58400`73000m3/h.
(source:http://www.airseparation-plant.cn/application-of-gas-oxygen-in-coal-gasification-and-liquefaction-industry-2/)
