EFFICIENT OXIDATIVE COUPLING OF METHANE PROCESSES AND SYSTEMS

    公开(公告)号:US20180215682A1

    公开(公告)日:2018-08-02

    申请号:US15888777

    申请日:2018-02-05

    IPC分类号: C07C2/84 C07C4/04 C07C5/327

    摘要: The present disclosure provides methods for producing hydrocarbon compounds, which may comprise directing a feed stream comprising methane (CH4) and an oxidizing agent into an oxidative coupling of methane (OCM) unit to generate from at least a portion of the CH4 and the oxidizing agent an OCM effluent comprising the hydrocarbon compounds. A portion of the OCM effluent may be directed into a recycle loop that comprises (i) a hydrogenation unit that hydrogenates at least a portion of unsaturated hydrocarbons from the additional portion of the OCM effluent, and (ii) a methanation unit that reacts hydrogen with carbon monoxide or carbon dioxide from the additional portion of the OCM effluent in a methanation reaction to form CH4. The recycle loop may output a recycle stream comprising the CH4 generated by the methanation unit. At least a portion of the recycle stream may be directed into the OCM unit.

    Process for Steam Cracking Hydrocarbons
    33.
    发明申请

    公开(公告)号:US20180170832A1

    公开(公告)日:2018-06-21

    申请号:US15817812

    申请日:2017-11-20

    IPC分类号: C07C4/04

    摘要: A steam cracking process for converting hydrocarbons into smaller hydrocarbons, particularly olefins, in a tube reactor comprising a convection section, a cross-over section, and a radiant section. The process includes heating the fluid mixture inside the tube to a temperature at the end of the convection section where significant cracking occurs in the cross-over section. The high convection section and cross-over section temperatures allow for lower tube wall temperature in the radiant section resulting in less coke deposition on the inner wall of the tube, and hence extended run-lengths between adjacent decoking sessions.