Modified absorption recovery processing of FCC-produced light olefins
    2.
    发明授权
    Modified absorption recovery processing of FCC-produced light olefins 有权
    FCC生产的轻质烯烃的改性吸收回收处理

    公开(公告)号:US08007661B1

    公开(公告)日:2011-08-30

    申请号:US11643884

    申请日:2006-12-21

    IPC分类号: C10G11/18

    CPC分类号: C10G11/18

    摘要: Processing schemes and arrangements are provided arrangements are provided for the processing a heavy hydrocarbon feedstock via hydrocarbon cracking processing with selected hydrocarbon fractions being obtained via absorption-based product recovery while minimizing or avoiding loss of light olefins via system purging.

    摘要翻译: 提供的处理方案和布置提供了用于通过烃裂解加工处理重质烃原料的装置,其中所选择的烃馏分通过基于吸收的产物回收获得,同时通过系统吹扫最小化或避免轻质烯烃的损失。

    Dual riser catalytic cracker for increased light olefin yield
    7.
    发明授权
    Dual riser catalytic cracker for increased light olefin yield 有权
    双重提升式催化裂化器,用于提高轻烯烃产率

    公开(公告)号:US09238600B2

    公开(公告)日:2016-01-19

    申请号:US13325292

    申请日:2011-12-14

    摘要: A process for improving the yield of ethylene and propylene from a light naphtha feedstock includes obtaining light naphtha feedstock from a primary cracking zone having a cracking catalyst. The light naphtha feedstock is contacted with an olefin catalyst in an olefin producing zone to produce an ethylene- and propylene-rich stream. After reacting with the olefin catalyst, the ethylene- and propylene-rich stream is separated from the olefin catalyst from in a separator zone. At least a portion of the olefin catalyst is regenerated by combusting coke deposited on a surface of the olefin catalyst in an oxygen-containing environment, and at least a portion of the olefin catalyst is heated. These portions could be the same one or they could be different. In some embodiments, at least a portion of the olefin catalyst could be neither regenerated nor heated. The olefin catalyst is returned to the olefin producing zone.

    摘要翻译: 从轻石脑油原料提高乙烯和丙烯的产率的方法包括从具有裂化催化剂的一次裂解区获得轻质石脑油原料。 轻质石脑油原料与烯烃生产区中的烯烃催化剂接触以产生富含乙烯和丙烯的料流。 在与烯烃催化剂反应后,将乙烯和富丙烯物流从分离器区域与烯烃催化剂分离。 至少一部分烯烃催化剂通过在含氧环境中燃烧沉积在烯烃催化剂的表面上的焦炭再生,至少部分烯烃催化剂被加热。 这些部分可以是相同的,也可以是不同的。 在一些实施方案中,烯烃催化剂的至少一部分既不能再生也不能加热。 将烯烃催化剂返回到烯烃生产区。