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    Process for making ammonia
    3.
    发明授权
    Process for making ammonia 有权

    公开(公告)号：US10435304B2

    公开(公告)日：2019-10-08

    申请号：US15541406

    申请日：2016-01-11

    申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

    发明人： John David Pach ,  Daniel Sheldon ,  David Wails

    IPC分类号： C01C1/04 ,  B01J23/89 ,  C01B3/02 ,  B01J23/56

    摘要： A process for production of ammonia includes: providing a reaction stream including carbon monoxide and hydrogen; passing the reaction stream and steam over a water gas shift catalyst in a catalytic shift reactor, forming a shifted gas mixture depleted in carbon monoxide and enriched in hydrogen; passing the shifted gas mixture with an oxygen-containing gas over a selective oxidation catalyst at ≥175° C., forming a selectively oxidized gas stream with a portion of the carbon monoxide converted to carbon dioxide; removing some of the carbon dioxide from the selectively oxidized gas stream in a carbon dioxide removal unit; passing the carbon dioxide depleted stream over a methanation catalyst in a methanator to form a methanated gas stream, optionally adjusting its hydrogen:nitrogen molar ratio to form an ammonia synthesis gas; and passing the ammonia synthesis gas over an ammonia synthesis catalyst in an ammonia converter to form ammonia.