Control apparatus for an ammonia manufacturing process

Details Control apparatus for an ammonia manufacturing process Control apparatus for an ammonia manufacturing process

1983-03-18

1984-11-27

Marcus, Michael S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Automatic analytical monitor and control of industrial process

364500, 422110, 422111, 422148, 423359, 436 55, G01N 3500, B01J 804, C01C 104, G05D 1100

Patent

active

044850700

ABSTRACT:
In an ammonia manufacturing apparatus, control of the hydrogen to nitrogen ratio for the feed to the ammonia synthesis reactor is accomplished by controlling the hydrogen to nitrogen ratio based on the ratio of hydrogen and carbon monoxide to nitrogen in the effluent withdrawn from the secondary reformer. Also, in an ammonia manufacturing apparatus where parallel reformer trains are utilized, shifting of loading between the parallel reformer trains is accomplished using valve position control to override the control based on the ratio of hydrogen and carbon monoxide to nitrogen in the effluent withdrawn from the secondary reformer.

REFERENCES:
patent: 3676066 (1972-07-01), Pennington
patent: 3705009 (1972-12-01), Dougherty
patent: 4069413 (1978-01-01), Rutledge et al.
patent: 4088740 (1978-05-01), Gaines
patent: 4094959 (1978-06-01), Ball et al.
patent: 4298588 (1981-11-01), Pinto
patent: 4305918 (1981-12-01), Gaines

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