Verfahren und Anlage zur kombinierter Herstellung einer Ammoniak-Synthesemischung und Kohlenmonoxyd

摘要

Combined production of the two gases in a single installation uses the hydrogen byproduct from carbon monoxide production to produce the ammonia synthesis gas. An ammonia synthesis gas and carbon monoxide are produced from on one side hydrogen under high pressure purified in a final stage by washing in nitrogen in a scrubbing column and on the other side high pressure nitrogen. Part of the high pressure nitrogen or part of the carbon monoxide is used as the coolant in an open refrigeration cycle, used to feed reboilers at the base of the stripping (62) and distillation (63) columns and is expanded in a turbine (67) at low pressure to cool the top of the distillation column and the separator. The carbon monoxide produced has a purity of at least 98%. Installation for carrying out the above process.