Oxidative dehydrogenation (ODH) of ethane

    公开(公告)号:US10752564B2

    公开(公告)日:2020-08-25

    申请号:US16319933

    申请日:2017-07-24

    Abstract: Processes and associated reaction systems for the oxidative dehydrogenation of ethane are provided. In particular, a process is provided that comprises supplying a feed gas comprising ethane and oxygen to a multitubular fixed-bed reactor, allowing the ethane and oxygen to react in the presence of an oxidative dehydrogenation catalyst to yield a reactor effluent comprising ethylene; supplying a coolant to an upstream region of an interior shell space of the reactor in a flow pattern that is counter-current with the flow of the feed gas; and withdrawing the coolant from the upstream region and supplying at least a portion of the coolant withdrawn from the upstream region to the downstream region in a flow pattern that is co-current with the flow of the feed gas.

    Method for producing a syngas stream

    公开(公告)号:US10125018B2

    公开(公告)日:2018-11-13

    申请号:US15324123

    申请日:2015-07-06

    Abstract: The present invention provides a method for producing a syngas stream, the method at least comprising the steps of: (a) providing a hydrocarbon-containing stream; (b) providing a reactor containing a heated mass of solids at a temperature of at least 1000° C.; (c) cracking the hydrocarbon-containing stream provided in step (a) in the reactor containing the heated mass of solids provided in step (b), thereby at least obtaining C and H2; (d) removing an H2-containing stream from the reactor; (e) converting the C obtained in step (c) in the reactor at an H2O/CO2 vol. % feed ratio of greater than zero, thereby obtaining a CO/H2-containing stream; (f) removing the CO/H2-containing stream from the reactor; (g) combining the H2-containing stream removed in step (d) with the CO/H2-containing stream removed in step (f) thereby obtaining a syngas stream.

    Integrated ethylene production process

    公开(公告)号:US12215073B2

    公开(公告)日:2025-02-04

    申请号:US18006159

    申请日:2021-08-03

    Abstract: The invention relates to a process for the production of ethylene in an integrated configuration comprising (i) a steam cracker configuration which comprises a steam cracker unit, a water condensation unit and a carbon dioxide removal unit and (ii) an oxidative dehydrogenation (ODH) configuration which comprises an ODH unit and a water condensation unit, wherein an effluent coming from the ODH configuration, which effluent comprises unconverted ethane and ethylene, is fed to the steam cracker configuration at a position which is downstream of the steam cracker unit, and wherein unconverted oxygen, carbon monoxide and acetylene are removed from at least a portion of the stream coming from the ODH unit by oxidation of carbon monoxide and acetylene into carbon dioxide in an oxidation unit which is located at a position (a) which is downstream of the ODH unit, and (b) which is downstream of the steam cracker unit and upstream of the carbon dioxide removal unit of the steam cracker configuration.

    Gas clean-up for alkane oxidative dehydrogenation effluent

    公开(公告)号:US11078134B2

    公开(公告)日:2021-08-03

    申请号:US16486535

    申请日:2018-02-20

    Abstract: The invention relates to a process for the production of an alkene by alkane oxidative dehydrogenation, comprising: (a) subjecting a stream comprising an alkane to oxidative dehydrogenation conditions, comprising contacting the alkane with oxygen in the presence of a catalyst comprising a mixed metal oxide, resulting in a stream comprising alkene, unconverted alkane, water, carbon dioxide, unconverted oxygen, carbon monoxide and optionally an alkyne; (b) removing water from at least part of the stream comprising alkene, unconverted alkane, water, carbon dioxide, unconverted oxygen, carbon monoxide and optionally an alkyne resulting from step (a), resulting in a stream comprising alkene, unconverted alkane, carbon dioxide, unconverted oxygen, carbon monoxide and optionally alkyne; (c) removing unconverted oxygen, carbon monoxide and optionally alkyne from at least part of the stream comprising alkene, unconverted alkane, carbon dioxide, unconverted oxygen, carbon monoxide and optionally alkyne resulting from step (b), wherein carbon monoxide and optionally alkyne are oxidized into carbon dioxide, resulting in a stream comprising alkene, unconverted alkane and carbon dioxide; (d) optionally removing carbon dioxide from at least part of the stream comprising alkene, unconverted alkane in and carbon dioxide resulting from step (c), resulting in a stream comprising alkene and unconverted alkane; (e) optionally separating at least part of the stream comprising alkene and unconverted alkane resulting from step (d), into a stream comprising alkene and a stream comprising unconverted alkane; (f) optionally recycling unconverted alkane from at least part of the stream comprising unconverted alkane resulting from step (e), to step (a).

Patent Agency Ranking