Oxygen is used as pulverized coal or heavy oil gasifier, heavy oil high temperature cracking is also inseparable from oxygen. The consumption index (equivalent to about 10t/h of ammonia production) of medium-sized ammonia plant switch from heavy oil as raw material to coal as raw material, in which oxygen consumption is: Coal water slurry pressurized gasification (conventional furnace) is 9264m3/h; water coal pressurized gasification (two-zone double-furnace) is 7333m3/ h; dry powder pressurized gasification is 7179m3/h; Smoke-free lump coal atmospheric pressure enriched oxygen continuous gasification, China Shenhua coal liquefaction demonstration project will be the world’s first coal direct liquefaction technology to achieve large-scale synthetic oil. To use heavy oil for gasification, per ton of synthetic ammonia consumption is 250~700m3; to use slag oil for gasification, per ton of synthetic ammonia consumption is 850~940m3.
