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1. 发明授权

US4242103A Cyclic two step process for production of methane from carbon monoxide 失效
标题翻译：从一氧化碳生产甲烷的循环两步法
公开(公告)号：US4242103A
公开(公告)日：1980-12-30
申请号：US45319
申请日：1979-06-04
申请人： Jule A. Rabo , Louis F. Elek , James N. Francis
发明人： Jule A. Rabo , Louis F. Elek , James N. Francis
IPC分类号： B01J35/10 , C07C1/00 , C10K3/04
CPC分类号： C10K3/04 , B01J35/10 , C07C1/00 , B01J35/1014 , Y10S48/06
摘要： Carbon monoxide-containing gas streams are passed over a catalyst capable of catalyzing the disproportionation of carbon monoxide so as to deposit a surface layer of active surface carbon on the catalyst essentially without formation of inactive coke thereon. The surface layer is contacted with steam and is thus converted to methane and CO.sub.2, from which a relatively pure methane product may be obtained. Dilute carbon monoxide-containing streams, as from underground coal gasification with air or the effluent from blast furnace operations, can be used without pretreatment to convert the carbon monoxide and/or to separate inert gases therefrom. Conversion of the active surface carbon with high pressure steam enables a high pressure product methane stream to be generated without expensive compression equipment and high energy consumption. Nickel, cobalt, iron, ruthenium, rhenium and alloys thereof are preferred catalysts, with the surface area thereof being preferably at least about 10 m.sup.2 /gr. Conversion of the active surface carbon can also be accomplished by contact with hydrogen.
摘要翻译：含有一氧化碳的气流通过能够催化一氧化碳歧化的催化剂，从而在催化剂上沉积活性表面碳的表面层，基本上不形成不活泼的焦炭。表面层与蒸汽接触，从而转化为甲烷和二氧化碳，可从中获得相对纯的甲烷产物。可以使用稀释的含一氧化碳的物流，如用空气或来自高炉操作的废气的地下煤气化，而不经预处理以转化一氧化碳和/或从其分离惰性气体。用高压蒸汽转化活性表面碳可以产生高压产品甲烷流，而不需要昂贵的压缩设备和高能量消耗。镍，钴，铁，钌，铼及其合金是优选的催化剂，其表面积优选为至少约10m 2 / gr。活性表面碳的转化也可以通过与氢接触来实现。

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