METHODS FOR OPERATING ACETYLENE HYDROGENATION UNITS IN OLEFIN PRODUCTION PROCESSES

    公开(公告)号:WO2020176200A1

    公开(公告)日:2020-09-03

    申请号:PCT/US2020/016464

    申请日:2020-02-04

    Abstract: A method for selectively hydrogenating acetylene in a cracked gas from a steam cracking unit for producing olefins may include separating a hydrogenation feed from the cracked gas. The hydrogenation feed may include acetylene, hydrogen, carbon monoxide, and at least one product. The method may further include contacting the hydrogenation feed with an acetylene hydrogenation catalyst, the contacting causing hydrogenation of at least a portion of the acetylene of the hydrogenation feed to produce a hydrogenation effluent. In response to a change in a composition of a feedstock to the steam cracking unit that results in a change in a hydrogen concentration in the hydrogenation feed, the method may further include determining the hydrogen concentration in the hydrogenation feed and increasing or decreasing a temperature of the hydrogenation feed based on the determined hydrogen concentration of the hydrogenation feed.

    METHOD AND APPARATUS FOR ADDING STEAM FOR A STEAM EXPLOSION PRETREATMENT PROCESS
    6.
    发明申请
    METHOD AND APPARATUS FOR ADDING STEAM FOR A STEAM EXPLOSION PRETREATMENT PROCESS 审中-公开
    用于添加蒸汽爆炸预处理过程的方法和装置

    公开(公告)号:WO2014047097A1

    公开(公告)日:2014-03-27

    申请号:PCT/US2013/060272

    申请日:2013-09-18

    Applicant: ANDRITZ INC.

    Abstract: A method for treating cellulosic biomass feed stock including: feeding the feed stock to an upper inlet of a vertical reactor vessel, wherein the feed stock is deposited on a pile of feed stock within the vertical reactor vessel; adding heat energy to heat the feed stock by injecting steam to an upper region of the vertical reactor vessel; propelling the feed stock through an outlet in a lower region of the vertical reactor vessel by injecting steam into the biomass at, near or after the bottom outlet of the vertical reactor vessel, and moving the propelled feed stock through an expansion device, such as a steam explosion device, to subject the feed stock to a steam explosion process.

    Abstract translation: 一种用于处理纤维素生物质原料的方法,包括:将原料进料到垂直反应器容器的上部入口,其中原料沉积在垂直反应器容器内的一堆原料上; 通过将蒸汽喷射到垂直反应器容器的上部区域来加热热能来加热原料; 通过在垂直反应器容器的底部出口附近或之后将蒸汽注入生物质中,通过竖直反应器容器的下部区域中的出口推进原料,并且将推进的原料通过膨胀装置移动,例如 蒸汽爆炸装置,对饲料进行蒸汽爆炸过程。

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