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1. 发明申请

US20160200586A1 REDUCTION OF ORGANONITRILE IMPURITY LEVELS IN HCN FROM AN OXYGEN ANDRUSSOW PROCESS 审中-公开
标题翻译：从氧气和硫酸过程中减少HCN中的有机物污染物浓度
公开(公告)号：US20160200586A1
公开(公告)日：2016-07-14
申请号：US14741952
申请日：2013-12-12
申请人： Stewart FORSYTH , Aiguo LIU , Martin J. RENNER , Brent J. STAHLMAN
发明人： Stewart FORSYTH , Aiguo LIU , Martin J. RENNER , Brent J. STAHLMAN
IPC分类号： C01C3/02
CPC分类号： C01C3/0212
摘要： The invention provides an oxygen Andrussow process for production of hydrogen cyanide from a methane-containing feedstock such as natural gas in the presence of oxygen and ammonia over a platinum catalyst, wherein the production of byproduct organonitrile impurities, such as acrylonitrile, is reduced. Limiting the content of C2 hydrocarbons in the methane feedstock in the oxygen Andrussow process, in contrast to the air Andrussow process, has been found to reduce formation of organonitriles, such as acrylonitrile. The organonitrile impurities can require additional processing for removal cause fouling of equipment, and can also contribute to hydrogen cyanide polymerization. Reduction of C2+ hydrocarbon levels to less than 2 wt %, or 1 wt %, or less than 0.1 wt %, in the methane can provide an improved yield of higher purity HCN. Reduction of C2+ hydrocarbon levels also solves the problem of polymer buildup in process equipment, reducing downtime required for cleaning when higher C2+ hydrocarbon levels are present in the reaction feed.
摘要翻译：本发明提供了一种用于在铂催化剂上在氧和氨存在下从含甲烷的原料例如天然气生产氰化氢的氧气Andrussow方法，其中副产物有机腈杂质如丙烯腈的生产减少。已经发现，与空气Andrussow方法相反，限制了氧气Andrussow方法中甲烷原料中的C2烃的含量，以减少有机腈如丙烯腈的形成。有机腈杂质可能需要额外的处理以除去设备的结垢，也可能导致氰化氢聚合。在甲烷中将C2 +烃水平降低至小于2重量％，或1重量％或小于0.1重量％可提供更高纯度HCN的提高的产率。降低C2 +烃水平也解决了工艺设备中聚合物积聚的问题，减少反应进料中较高的C2 +烃含量时清洗所需的停机时间。

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