| 摘要 |
In a process for producing ammonia (3) on the basis of a mixture (4) essentially comprising nitrogen and hydrogen obtained from natural gas (5), said natural gas (5) is subjected to a partial oxidation reaction with an oxygenrich gas (6) in presence of steam obtaining a crude synthesis gas (7) comprising hydrogen and carbon monoxide, said crude synthesis gas (7) being treated in at least one catalytic reaction step (shift) to convert part of the carbon monoxide into carbon dioxide obtaining a converted synthesis gas (8) comprising hydrogen, carbon dioxide and carbon monoxide, said converted synthesis gas (8) being subjected to at least one decarbonation step to at least partially remove the carbon dioxide and to at least one purification step to at least partially remove the carbon monoxide. |
