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    • 1. 发明申请
    • REDUCED ELEVATION CATALYST RETURN LINE FOR A FLUID CATALYTIC CRACKING UNIT
    • 用于流体催化裂化装置的减压高温催化剂返回管
    • WO2009011804A3
    • 2009-12-10
    • PCT/US2008008548
    • 2008-07-11
    • EXXONMOBIL RES & ENG COCUNNINGHAM BRIAN ASMALLEY CHRISTOPER GDAVULURI RATHNA PNOURI DANA W
    • CUNNINGHAM BRIAN ASMALLEY CHRISTOPER GDAVULURI RATHNA PNOURI DANA W
    • B01J8/00B01J8/26C10G11/18
    • B01J8/0015C10G11/18C10G11/182C10G2300/301
    • The present invention is an improved regenerated catalyst bend assembly for a fluid catalytic cracking unit. In one embodiment, the regenerated catalyst conduit (200) for fluidly connecting a regenerator standpipe (55) to a reactor riser (1) of a fluid catalytic cracking unit comprises: a) a first bend with a bend radious, R1, and an inlet end and an outlet end; and b) a second bend with a bend radious, R2, and an inlet end and an outlet end; wherein the inlet end of the first bend is physically connected to the outlet end of the regenerator standpipe (55), the outlet end of the first bend is physically connected to the inlet end of the second bend, the outlet end of the second bend is physically connected to the inlet end of the reactor riser (1), and R1 is not equal to R2. I another embodiment, the conduit comprises a bend with radius, RREL, and a bend inlet end and a bend outlet end; and b) a conduit inlet end and a conduit outlet end; wherein the inlet end of the conduit is physically connected to the outlet end of the regenerator standpipe, and the outlet end of the conduit is physically connected to the reactor riser, wherein the centerline of the reactor riser and the centerline of the outlet end of the conduit are at substantially a 90° angle. 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.
    • 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。 在一个实施例中,用于将再生器立管(55)流体连接到流化催化裂化装置的反应器提升管(1)的再生催化剂导管(200)包括:a)具有弯曲的第一弯曲,R1和入口 端部和出口端; 和b)具有弯曲的第二弯曲部R2,以及入口端和出口端; 其中所述第一弯管的入口端物理连接到所述再生器立管(55)的出口端,所述第一弯头的出口端物理连接到所述第二弯管的入口端,所述第二弯管的出口端 物理连接到反应器提升管(1)的入口端,R1不等于R2。 在另一个实施例中,导管包括具有半径的弯曲部,RREL以及弯曲入口端部和弯曲出口端部; 和b)导管入口端和导管出口端; 其中导管的入口端物理地连接到再生器立管的出口端,并且导管的出口端物理连接到反应器提升管,其中反应器提升管的中心线和出口端的中心线 管道基本上为90°角。 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。