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    Process for preparing ethylene carbonate and ethylene glycol
    1.
    发明授权
    Process for preparing ethylene carbonate and ethylene glycol 有权

    公开(公告)号：US11498911B2

    公开(公告)日：2022-11-15

    申请号：US16769553

    申请日：2018-12-06

    申请人： SHELL OIL COMPANY

    发明人： Roel Guillaume Hubertus Leonardus Bastings ,  Jesse Raymond Black ,  Vesna Bojovic ,  Wayne Errol Evans ,  Gregory John Ward

    IPC分类号： C07C29/50 ,  C07C317/38 ,  B01J21/04 ,  B01J23/50 ,  B01D53/04 ,  B01D53/70 ,  B01D53/78 ,  C07D317/38

    摘要： A process for producing ethylene glycol and/or ethylene carbonate, said process comprising contacting at least a portion of a recycle gas stream comprising an alkyl iodide impurity with a guard bed system positioned upstream of an ethylene oxide reactor to produce a treated recycle gas stream, wherein the guard bed system comprises silver on alumina; contacting an epoxidation feed stream comprising an ethylene feed stream, oxygen, chloride moderator, and at least a portion of the treated recycle gas stream with an epoxidation catalyst in the ethylene oxide reactor to produce an epoxidation reaction product comprising ethylene oxide; and contacting at least a portion of the epoxidation reaction product comprising ethylene oxide with a liquid absorbent in the presence of an iodide-containing catalyst in an absorber to produce a product stream comprising ethylene carbonate and/or ethylene glycol and the recycle gas stream comprising the alkyl iodide impurity.

    Process and apparatus for the preparation of alkylene glycol
    2.
    发明授权
    Process and apparatus for the preparation of alkylene glycol 有权

    公开(公告)号：US10279280B2

    公开(公告)日：2019-05-07

    申请号：US15513572

    申请日：2015-09-21

    申请人： SHELL OIL COMPANY

    发明人： Peter Mervyn Wilkinson ,  Jesse Raymond Black ,  Roel Guillaume Hubertus Leonardus Bastings

    IPC分类号： C07C31/20 ,  B01D3/20 ,  B01D3/22 ,  C07C29/10

    摘要： A process for the preparation of an alkylene glycol from an alkene is provided, along with an absorber apparatus. The process comprises: supplying a gas composition to an absorber comprising a column of vertically stacked trays, wherein each of the vertically stacked trays comprises: a perforated gas-liquid contacting member or members, a liquid inlet area, an outlet weir extending vertically above a surface of the tray at an opposite end of the tray from the liquid inlet area and having a height of at least 200 mm and at most 1500 mm, and a downcomer element which, in cooperation with an inner surface of a wall of the column, forms a downcomer for the passage of liquid downwardly to the liquid inlet area of an adjacent vertically stacked tray below, and allowing the gas composition to pass upwards through the alkylene oxide absorber.

    Guard bed system and process
    5.
    发明授权
    Guard bed system and process 有权

    公开(公告)号：US11000819B2

    公开(公告)日：2021-05-11

    申请号：US16061758

    申请日：2016-12-13

    申请人： SHELL OIL COMPANY

    发明人： Jesse Raymond Black ,  Gregory John Ward ,  Roel Guillaume Hubertus Leonardus Bastings ,  David Allen Van Kleeck ,  Wayne Errol Evans

    IPC分类号： B01J8/04 ,  C07D301/32

    摘要： The invention provides a reaction system for the production of ethylene carbonate and/or ethylene glycol. The reaction system having a guard bed system upstream of a catalytic EO reactor. The guard bed system having a feed line supplying a gaseous feed and an effluent line configured to remove the treated gaseous feed. The guard bed system has two or more guard bed vessels arranged in series in sequential order, each having an inlet, a bed of guard bed material and an outlet. The inlet of each guard bed vessel is attached by means of valves to both the feed line and the outlet of the guard bed vessel preceding it in sequential order. The outlet of each guard bed vessel is attached by means of valves to both the effluent line and to the inlet of the guard bed vessel following it in sequential order.

    Processes and systems for the recycle of process water in the production of ethylene glycol
    6.
    发明授权
    Processes and systems for the recycle of process water in the production of ethylene glycol 有权

    公开(公告)号：US10717719B2

    公开(公告)日：2020-07-21

    申请号：US16092843

    申请日：2017-04-10

    申请人： SHELL OIL COMPANY

    发明人： Jesse Raymond Black ,  Roel Guillaume Hubertus Leonardus Bastings ,  Alexandre Molina

    IPC分类号： C07D317/38 ,  C07C29/10 ,  B01D3/00 ,  B01D3/14 ,  B01D53/18 ,  B01J8/04

    摘要： Processes for producing ethylene carbonate and/or ethylene glycol, and associated reaction systems are similarly provided. Specifically, a process is provided that comprises supplying an overhead absorber stream withdrawn from an absorber to a vapor-liquid separator to yield an aqueous bottoms stream and a recycle gas stream; supplying an aqueous process stream comprising one or more impurities to a distillation apparatus to yield an overhead impurities stream and a purified aqueous process stream; supplying at least a portion of the purified aqueous process stream and an ethylene oxide product stream to the absorber; and contacting the ethylene oxide product stream with the purified aqueous process stream in the absorber in the presence of one or more carboxylation and hydrolysis catalysts to yield a fat absorbent stream comprising ethylene carbonate and/or ethylene glycol.