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公开(公告)号：US20180371337A1
公开(公告)日：2018-12-27
申请号：US16061954
申请日：2016-12-13
摘要： Methods and systems for producing olefins and aromatics are provided. Methods can include removing silica from the coker naphtha feedstock to produce a first effluent, hydrogenating the first effluent to produce a second effluent, reacting the second effluent to produce a third effluent comprising aromatics, a fourth effluent comprising olefins, and a fifth effluent, separating the fourth effluent to produce a propylene product stream, an ethylene product stream, and a sixth effluent, recycling the sixth effluent by combining it with the second effluent.
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公开(公告)号：US20180327676A1
公开(公告)日：2018-11-15
申请号：US15774206
申请日：2016-11-07
CPC分类号： C10G69/02 , B01J8/1863 , B01J8/28 , C07C4/14 , C07C2523/26 , C07C2529/44 , C07C2529/48 , C10G9/30 , C10G11/05 , C10G11/18 , C10G21/00 , C10G25/003 , C10G35/085 , C10G35/14 , C10G45/02 , C10G45/38 , C10G45/40 , C10G45/70 , C10G47/30 , C10G63/04 , C10G65/046 , C10G65/12 , C10G2400/30
摘要： The presently disclosed subject matter provides methods for producing olefins and/or aromatics from coker naphtha. In a non-limiting embodiment, a method for producing aromatics includes hydrogenating the coker naphtha stream in the presence of a first catalyst to remove diolefins and sulfur, if any, to obtain a hydrogenated stream and subjecting the hydrogenated stream to aromatization in the presence of a second catalyst to produce an aromatic-rich stream that includes benzene, toluene and xylene. In certain embodiments, a method for producing olefins includes hydrogenating the coker naphtha stream in the presence of a first catalyst to remove diolefins and sulfur, if any, to obtain a hydrogenated stream and subjecting the hydrogenated stream to catalytic cracking in the presence of a second catalyst to produce an olefin-rich stream that includes ethylene, propylene and aromatics.
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