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1. 发明授权

US5494572A Desulfurization and denitration of light oil by extraction 失效
标题翻译：轻油脱硫脱硝
公开(公告)号：US5494572A
公开(公告)日：1996-02-27
申请号：US458554
申请日：1995-06-02
申请人： Yuji Horii , Hitoshi Onuki , Sadaaki Doi , Toshiatsu Mori , Takeo Takatori , Hideaki Sato , Tsuyoshi Ookuro , Toru Sugawara
发明人： Yuji Horii , Hitoshi Onuki , Sadaaki Doi , Toshiatsu Mori , Takeo Takatori , Hideaki Sato , Tsuyoshi Ookuro , Toru Sugawara
IPC分类号： C10G21/20 , C10G29/00
CPC分类号： C10G21/20
摘要： This process for the desulfurization and denitration of light oil is effected by extraction with an organic solvent containing nitrogen. The invention also relates to light oil desulfurized and denitrated by said process as well as an organic solvent containing nitrogen for the extraction. The solvent is selected from among, for example, hetrocyclic compounds containing nitrogen, such as pyrrolidones, imidazolidinones, pyrimidinones and pyridinium salts, and acid amides. The combination of the process of this invention with any ordinary process for hydrodesulfurization enables the production of light oil having a sulfur content not exceeding 0.01% by weight. Light oil still containing benzothiophenone and dibenzothiophenone derivatives after hydrodesulfurization can be easily desulfurized to yield a desulfurized product not having any undesirable color, or any offensive smell. Also, the extraction of nitrogen compounds and aromatic compound from light oil is effected by the same process. As the re-extraction of sulfur compounds from the extracted phase or the separation of the extracted phase into the solvent and the extracted oil can be easily carried out, the solvent is reusable. The light oil treated according to the process of this invention enables a reduction of particulates in the combustion product thereof, and has a high cetane index.
摘要翻译：用于轻油脱硫和脱硝的该方法通过用含氮的有机溶剂萃取来实现。本发明还涉及通过所述方法脱硫和脱硝的轻质油以及含有氮气的有机溶剂进行萃取。溶剂选自例如含氮的杂环化合物，例如吡咯烷酮，咪唑烷酮，嘧啶酮和吡啶鎓盐，以及酰胺。本发明方法与任何常规加氢脱硫方法的组合使得能够生产硫含量不超过0.01重量％的轻油。加氢脱硫后还含有苯并噻吩酮和二苯并噻吩酮衍生物的轻油可以容易地脱硫，得到不具有任何不希望的颜色或任何异味的脱硫产物。另外，从轻油中提取氮化合物和芳族化合物也是通过相同的方法进行的。由于从萃取相中重新萃取硫化合物或将萃取相分离成溶剂，并且可以容易地进行萃取的油，所以溶剂是可重复使用的。根据本发明方法处理的轻油能够减少其燃烧产物中的颗粒，并且具有高的十六烷指数。

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