Methods and systems for producing and processing syngas in a pressure swing adsorption unit and making ammonia therefrom

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United States of America Patent

PATENT NO 9561968
SERIAL NO

14452463

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Abstract

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Methods and systems for making ammonia are provided. The method can include converting carbon monoxide in a first syngas to carbon dioxide to produce a shifted syngas. At least a portion of the carbon dioxide can be separated from the shifted syngas to produce a carbon dioxide-lean syngas. Carbon monoxide and/or carbon dioxide in the carbon dioxide-lean syngas can be converted to methane to produce a methanated first syngas. A second syngas can be separated to produce a purified second syngas and a waste gas. The methanated first syngas and the purified second syngas can be combined to produce an ammonia feedstock. The ammonia feedstock can have a hydrogen to nitrogen molar ratio of about 3.5:1 to about 2.5:1. At least a portion of the hydrogen and nitrogen in the ammonia feedstock can be reacted to produce an ammonia product.

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Patent Owner(s)

Patent OwnerAddress
KELLOGG BROWN & ROOT LLC601 JEFFERSON STREET HOUSTON TX 77002

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nahar, Akhil Jain Delhi, IN 2 5
Noe, Stephen Allen Tomball, US 5 16
Singh, Shashi Prakash Missouri City, US 6 65

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