Reduced elevation catalyst return line for a fluid catalytic cracking unit
    13.
    发明授权
    Reduced elevation catalyst return line for a fluid catalytic cracking unit 有权
    用于流化催化裂化装置的降低催化剂返回管路

    公开(公告)号:US08202412B2

    公开(公告)日:2012-06-19

    申请号:US11879259

    申请日:2007-07-17

    IPC分类号: C10G11/00 B01J8/18

    摘要: The present invention is an improved regenerated catalyst bend assembly for a fluid catalytic cracking unit. In a preferred embodiment, the reduced elevation (“RE-bend” or “REL-bend”) regenerated catalyst return line assembly of the present invention has an outlet elevation that is lower than the inlet elevation of the RE-bend or REL-bend regenerated catalyst return line assembly, and a process for utilizing the assembly in a fluid catalytic cracking unit. The present invention is especially useful in the modification of existing fluid catalytic cracking units to lower the elevation of the outlet of the regenerated catalyst return line assembly, thereby providing needed space to increase the fluid catalytic cracking reactor riser length.

    摘要翻译: 本发明是用于流化催化裂化装置的改进的再生催化剂弯曲组件。 在优选实施例中,本发明的再生催化剂返回管线组件的缩小的高度(“RE-弯曲”或“REL-弯曲”)具有低于RE弯头或REL-弯头的入口高度的出口高度 再生催化剂返回管路组件,以及在流化催化裂化装置中利用该组件的方法。 本发明特别可用于改进现有的流化催化裂化装置以降低再生催化剂返回管线组件的出口的高度,从而提供所需的空间以增加流化催化裂化反应器提升管的长度。

    FCC unit catalyst stripper
    17.
    发明授权
    FCC unit catalyst stripper 有权
    FCC单元催化剂汽提器

    公开(公告)号:US5910240A

    公开(公告)日:1999-06-08

    申请号:US144877

    申请日:1998-09-01

    CPC分类号: C10G11/18 B01J8/0055 B01J8/34

    摘要: An improved stripper section design is provided for use in fluid catalytic cracking (FCC) units. The stripper section contains means for imparting rotational movement to the FCC cracking catalyst as it traverses the stripping section. In one embodiment the stripper section contains at least one rotation vane that is preferably disposed on the surface of a stripper section tray. The rotation vane provides angular, rotational movement to the cracking catalyst as it traverses the stripper section. Vertical movement is imparted to the cracking catalyst due to gravity and radial movement is imparted to the catalyst due to the slanted nature of the tray. Through the use of the rotation vanes the contact between the catalyst particles and the stripping steam is increased, thereby improving the overall efficiency of the FCC operation.

    摘要翻译: 提供了一种用于流化催化裂化(FCC)装置的改进的汽提部分设计。 汽提器部分包含用于当FCC裂化催化剂穿过汽提部分时向FCC裂化催化剂施加旋转运动的装置。 在一个实施例中,汽提器部分包含至少一个旋转叶片,其优选地设置在汽提器部分托盘的表面上。 旋转叶片在穿过剥离器部分时向裂化催化剂提供角度旋转运动。 由于重力而使裂纹催化剂产生垂直运动,并且由于托盘的倾斜性质,向催化剂施加径向移动。 通过使用旋转叶片,催化剂颗粒和汽提蒸汽之间的接触增加,从而提高了FCC操作的总体效率。