What are the main raw materials used to produce ammonia synthesis?

Ammonia synthesis refers to the direct synthesis of ammonia from nitrogen and hydrogen under high temperature and pressure and in the presence of a catalyst. Alias:Ammonia. Molecular formula NH3 the world's ammonia in addition to a small amount of coke oven gas from the recovery of by-products, the vast majority of ammonia is synthesized. Synthetic ammonia is mainly used as fertilizer, refrigerant and chemical raw materials, the main raw materials for the production of synthetic ammonia are natural gas, naphtha, heavy oil and coal (or coke).

Natural gas to ammonia. Natural gas first by desulfurization, and then through the secondary conversion, and then after carbon monoxide conversion, carbon dioxide removal and other processes, to get the nitrogen and hydrogen mixture, which still contains carbon monoxide and carbon dioxide about 0.1,,0.3, (volume), by the methanation to remove the role of the system to obtain hydrogen and nitrogen molar ratio of 3 of the pure gas, by the compressor compression and into the ammonia synthesis circuit.

Heavy oil ammonia production. Heavy oil, including a variety of deep processing of residual oil, can be part of the oxidation method of ammonia feedstock gas, the production process is simpler than the natural gas vapor conversion method, but need to have an air separation device. Oxygen produced by the air separation device for oil gasification, nitrogen as a raw material for ammonia synthesis, liquid nitrogen is also used as a detergent to remove carbon monoxide, methane and argon. Coal (coke) ammonia.

With the development of petrochemical and natural gas chemical industry, coal as raw material for ammonia. 

Ammonia is mainly used in the manufacture of nitrogen fertilizers and compound fertilizers, ammonia as an industrial raw material and ammonia feed, the amount of about 12 of the world's output. nitric acid, a variety of nitrogen-containing inorganic salts and organic intermediates, sulfonamides, polyurethanes, polyamide fibers and nitrile rubber, etc. need to be directly to ammonia as raw material. Liquid ammonia is often used as a refrigerant.