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公开(公告)号：US10519086B2
公开(公告)日：2019-12-31
申请号：US16328085
申请日：2017-08-30
申请人： SHELL OIL COMPANY
IPC分类号： C07C29/76 , B01J23/00 , B01J25/00 , B01J23/30 , B01J25/04 , B01J35/00 , B01J38/72 , C07C29/141 , C07C31/20
摘要： Implementations of the disclosed subject matter provide a process for producing ethylene glycol from a carbohydrate feed. The process may include contacting, in a reactor under hydrogenation conditions, the carbohydrate feed with a bi-functional catalyst system which may include a heterogeneous hydrogenation catalyst including a magnetically active metal, and a soluble retro-Aldol catalyst including tungstate. A liquid effluent stream may be obtained from the reactor and may include hydrogenation catalyst particles and tungsten oxide precipitate particles. The hydrogenation catalyst particles may be magnetically separated from the tungsten oxide precipitate particles in the liquid effluent stream using a magnet in a separation vessel. The separated hydrogenation catalyst particles may be retained in a separation zone in the separation vessel and may be subsequently removed from the separation zone. A liquid product stream may be obtained from the separation vessel and may include the tungsten oxide precipitate particles and ethylene glycol.
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公开(公告)号：US10752567B2
公开(公告)日：2020-08-25
申请号：US16336140
申请日：2017-09-28
申请人： SHELL OIL COMPANY
摘要： Implementations of the disclosed subject matter provide methods for producing ethylene glycol from a carbohydrate feed which may include conditioning a heterogeneous hydrogenation catalyst by treatment with a protic acid resulting in an acid-conditioned heterogeneous hydrogenation catalyst. Next, in a reactor under hydrogenation conditions, the carbohydrate feed may be contacted with a bi-functional catalyst system comprising the acid-conditioned heterogeneous hydrogenation catalyst, and a soluble retro-Aldol catalyst. An intermediate product stream may be obtained from the reactor including ethylene glycol.
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公开(公告)号：US10654782B2
公开(公告)日：2020-05-19
申请号：US15768964
申请日：2016-10-18
申请人： SHELL OIL COMPANY
IPC分类号： C07C29/132 , C07C29/60 , B01J23/30 , B01J25/02 , B01J35/00
摘要： Implementations of the disclosed subject matter provide methods for producing ethylene glycol from a carbohydrate feed may include contacting, in a first reactor under hydrogenation conditions, the carbohydrate feed with a bi-functional catalyst system. The bi-functional catalyst system may include a heterogeneous hydrogenation catalyst, and a soluble retro-Aldol catalyst. The carbohydrate feed may include a concentration of carbohydrate, in the total solution entering the first reactor, of 5-40 wt % in a solvent. An intermediate product stream may be obtained from the first reactor including ethylene glycol. The hydrogenation conditions may include a temperature in the range of from 180-250° C.
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