发明名称 METHODS AND SYSTEMS FOR PRODUCING AND PROCESSING SYNGAS IN A PRESSURE SWING ADSORPTION UNIT AND MAKING AMMONIA THEREFROM
摘要 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.
申请公布号 US2015044120(A1) 申请公布日期 2015.02.12
申请号 US201414452463 申请日期 2014.08.05
申请人 Kellogg Brown & Root LLC 发明人 SINGH SHASHI PRAKASH;NAHAR AKHIL JAIN;NOE STEPHEN ALLEN
分类号 C01C1/04;B01J19/00 主分类号 C01C1/04
代理机构 代理人
主权项 1. A method for making ammonia, comprising: converting a first syngas comprising carbon dioxide and about 8 mol % to about 20 mol % carbon monoxide to produce a shifted syngas comprising carbon dioxide and about 0.1 mol % to about 1 mol % carbon monoxide; separating at least a portion of the carbon dioxide from the shifted syngas to produce a carbon dioxide-lean syngas; converting at least a portion of the carbon monoxide, carbon dioxide, or both in the carbon dioxide-lean syngas to methane to produce a methanated first syngas having a hydrogen to nitrogen molar ratio of about 1.5:1 to about 3.5:1; separating a second syngas comprising carbon dioxide and about 7 mol % to about 20 mol % carbon monoxide to produce a purified second syngas having a hydrogen to nitrogen molar ratio of about 2:1 to about 50:1 and a waste gas having a carbon monoxide concentration of about 0.2 mol % to about 60 mol %; combining at least a portion of the methanated first syngas and at least a portion of the purified second syngas to produce an ammonia feedstock having a hydrogen to nitrogen molar ratio of about 2.5:1 to about 3.5:1; and reacting at least a portion of the hydrogen and nitrogen in the ammonia feedstock to produce an ammonia product.
地址 Houston TX US