Most ammonia production is synthesized from nitrogen and hydrogen at high pressure, high temperature and in the presence of catalyst. Nitrogen mainly comes from air; Hydrogen mainly comes from synthesis gas containing hydrogen and carbon monoxide (pure hydrogen also comes from electrolysis of water). The mixed gas consisting of nitrogen and hydrogen is synthetic ammonia feed gas.
ammonia
Ammonia is an inorganic compound with chemical formula of NH3 and molecular weight of 17.05438+0. Colorless, with a strong pungent smell. The density is 0.77 10g/l and the relative density is 0.597 1 (air = 1.00). Easily liquefied into colorless liquid. It can be liquefied under normal pressure (critical temperature 132.4℃, critical pressure 1 1.2 MPa, i.e. 1 12.2 atmospheric pressure).
Boiling point -33.5℃. It is also easy to be solidified into a snow-like solid. Melting point -77.75℃. Soluble in water, ethanol and ether. It will be decomposed into nitrogen and hydrogen at high temperature, which has a reducing effect. It can be oxidized to nitric oxide in the presence of a catalyst. Used to make liquid nitrogen, ammonia water, nitric acid, ammonium salt and amine. It can be directly synthesized by nitrogen and hydrogen, and can burn the mucosa of skin, eyes and respiratory organs.
Refer to the above content: Baidu Encyclopedia-Ammonia