Ammonia production with enriched air reforming and nitrogen inje

Details Ammonia production with enriched air reforming and nitrogen inje Ammonia production with enriched air reforming and nitrogen inje

1995-10-25

1998-04-07

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

423362, C01C 104

Patent

active

057361169

ABSTRACT:
A retrofit method for increasing production capacity of an ammonia plant having a front end including in series primary and secondary reformers and a shift converter for reacting a hydrocarbon feed, steam and air to form a make-up syngas stream comprising hydrogen and nitrogen at about design stoichiometry, and a synthesis loop wherein a recycle syngas stream is combined with the make-up gas to form a syngas feed to ammonia converters. The retrofit involves the installation of an air separation unit to supply oxygen and nitrogen streams. The oxygen is used to enrich air supplied to the secondary reformer and increase the hydrogen content of the make-up gas substantially above the design stoichiometry and capacity. The nitrogen stream is supplied to the synthesis loop to obtain a desired hydrogen to nitrogen ratio in the syngas feed to the ammonia converters and compensate for the excess hydrogen in the make-up gas. The synthesis loop, if desired, is upgraded to include a high activity catalyst converter for increased ammonia production.

REFERENCES:
patent: 4055628 (1977-10-01), McCarroll et al.
patent: 4122040 (1978-10-01), McCarroll et al.
patent: 4163775 (1979-08-01), Foster et al.
patent: 4230669 (1980-10-01), Eagle et al.
patent: 4568530 (1986-02-01), Mandelik et al.
patent: 4568531 (1986-02-01), van Dijk et al.
patent: 4568532 (1986-02-01), Benner et al.
patent: 4681745 (1987-07-01), Pinto
patent: 4696799 (1987-09-01), Noe
patent: 4735780 (1988-04-01), Noe
patent: 4886651 (1989-12-01), Patel et al.
patent: 5011625 (1991-04-01), LeBlanc
patent: 5180570 (1993-01-01), Lee et al.
patent: 5250270 (1993-10-01), Noe

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