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    Method for producing ammonia from methanol
    11.
    发明授权
    Method for producing ammonia from methanol 失效
    从甲醇生产氨的方法

    公开(公告)号：US07547428B2

    公开(公告)日：2009-06-16

    申请号：US10473320

    申请日：2002-02-26

    申请人： William Davey

    发明人： William Davey

    IPC分类号： C01C1/04 ,  C01B3/22 ,  C07C273/04

    CPC分类号： C01B3/56 ,  C01B3/025 ,  C01B3/323 ,  C01B3/52 ,  C01B3/586 ,  C01B2203/0415 ,  C01B2203/0445 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/0485 ,  C01C1/0405 ,  Y02P20/52

    摘要： Ammonia is catalytically produced from a nitrogen-hydrogen mixture. First of all, a vaporous feed mixture, which comprises 30 to 60 vol-% methanol and 40 to 70 vol-% steam and has a volume ratio steam:methanol of 1 to 3, is passed through at least one bed of a breakdown catalyst at pressures in the range from 30 to 200 bar, the temperatures in the catalyst bed lying in the range from 200 to 500° C. From the catalyst bed, a first gas mixture is withdrawn, which, calculated dry, comprises 40 to 80 vol-% H2 and 10 to 30 vol-% CO2. The first gas mixture is cooled, CO2 is removed in a gas cleaning, and a second gas mixture is generated, which comprises at least 95 vol-% nitrogen and hydrogen, and which is supplied as synthesis gas to an ammonia synthesis for the catalytic production of ammonia.

    摘要翻译： 氨由氮 - 氢混合物催化产生。 首先，将包含30至60体积％甲醇和40至70体积％蒸汽并且具有1至3的蒸汽：甲醇的体积比的蒸气进料混合物通过至少一个分解催化剂床 在30至200巴的压力范围内，催化剂床中的温度在200至500℃的范围内。从催化剂床中取出第一气体混合物，其计算干燥，包含40至80体积％ - ％H2和10〜30vol-％CO2。 将第一气体混合物冷却，在气体清洁中除去CO 2，并且产生第二气体混合物，其包含至少95体积％的氮和氢，并且其作为合成气体供应到用于催化生产的氨合成 的氨。

    Method for the Production of Urea from Natural Gas
    12.
    发明申请
    Method for the Production of Urea from Natural Gas 失效
    从天然气生产尿素的方法

    公开(公告)号：US20080207948A1

    公开(公告)日：2008-08-28

    申请号：US11665278

    申请日：2005-08-18

    申请人： William Davey ,  Thomas Wurzei

    发明人： William Davey ,  Thomas Wurzei

    IPC分类号： C07C273/02

    CPC分类号： C07C273/10 ,  C01C1/0488 ,  C07C273/04 ,  Y02P20/52

    摘要： Disclosed is a method for the production of urea from natural gas, wherein a) natural gas undergoes partial oxidation or autothermal reformation with a gas containing oxygen in a first step and the raw synthesis gas thus arising, consisting essentially of carbon monoxide, carbon dioxide, methane and hydrogen, can be transformed by catalytic conversion of CO and H2O to form CO2 and H2, whereupon carbon monoxide and methane are removed in a multistep gas cleaning process and the hydrogen is converted into ammonia upon addition of nitrogen, and subsequently, b) the ammonia is recombined with the previously separated carbon dioxide in a second step and the ammonia is thus fully converted into urea.

    摘要翻译： 公开了一种用于从天然气生产尿素的方法，其中a）天然气在第一步中用含氧气体进行部分氧化或自热重整，由此产生的原始合成气基本上由一氧化碳，二氧化碳， 甲烷和氢气可以通过CO和H 2 O 2的催化转化而转化成CO 2 H 2和H 2 O，从而一氧化碳和甲烷 在多步骤气体清洗过程中被除去，并且在加入氮气时将氢气转化成氨，随后b）在第二步骤中氨与先前分离的二氧化碳重新组合，因此氨完全转化为尿素。