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    • 1. 发明申请
    • REGENERATION OF FLUIDIZED CATALYTIC CRACKING CATALYST
    • 流化催化裂化催化剂的再生
    • WO1993002794A1
    • 1993-02-18
    • PCT/US1991005532
    • 1991-08-05
    • MOBIL OIL CORPORATION
    • MOBIL OIL CORPORATIONOWEN, HartleySCHIPPER, Paul, Herbert
    • B01J38/38
    • C10G11/182B01J29/90B01J38/34B01J38/38
    • A process is disclosed for simultaneously heating and cooling spent FCC catalyst during regeneration in a high efficiency FCC regenerator using a fast fluidized bed coke combustor (50). The coke combustor (50) burns coke from the spent catalyst in a turbulent or fast fluidized bed (52), and discharges catalyst and flue gas up into a dilute phase transport riser (56), where the catalyst is separated from the flue gas and flows to a bubbling dense bed (75) of catalyst. The coke combustor (50) is heated by recyling hot catalyst from the bubbling dense bed (75) and simultaneously cooled by a backmixed heat exchanger (203). Catalyst flows from the combustor (50) to the heat exchanger (203), and is displaced back into the combustor (50) by adding air to the catalyst in the cooler (203). Heating promotes rapid coke combustion, while cooling reduces thermal and hydrothermal deactivation of the spent catalyst. High superficial vapor velocities in the heat exchanger (203) promote heat transfer without disrupting flow in the fast fluidized bed coke combustor (50), and without increasing catalyst traffic in the flue gas above the bubbling dense bed (75).
    • 公开了一种用于在使用快速流化床焦炭燃烧器(50)的高效FCC再生器中再生期间同时加热和冷却废FCC催化剂的方法。 焦炭燃烧器(50)在湍流或快速流化床(52)中从废催化剂燃烧焦炭,并将催化剂和烟道气排放到稀相运输提升器(56)中,其中催化剂与烟道气分离, 流入催化剂的鼓泡密床(75)。 焦炭燃烧器(50)通过从发泡致密床(75)再循环热催化剂而加热,并同时由反混热交换器(203)冷却。 催化剂从燃烧器(50)流到热交换器(203),并通过向冷却器(203)中的催化剂添加空气而返回到燃烧器(50)中。 加热促进快速焦炭燃烧,而冷却减少废催化剂的热和水热失活。 热交换器(203)中的高表观蒸气速度促进热传递而不破坏快速流化床焦炭燃烧器(50)中的流动,并且不增加在起泡致密床(75)上方的烟道气中的催化剂流量。
    • 5. 发明申请
    • A PROCESS FOR REGENERATING SPENT FLUIDIZED CATALYTIC CRACKING CATALYST
    • 一种再生流态流化催化裂化催化剂的方法
    • WO1993008912A1
    • 1993-05-13
    • PCT/US1991007980
    • 1991-10-30
    • MOBIL OIL CORPORATION
    • MOBIL OIL CORPORATIONOWEN, HartleySCHIPPER, Paul, Herbert
    • B01J38/38
    • B01J38/34B01J29/90C10G11/182C10G11/187
    • In a process for controlled, multi-stage regeneration of FCC catalyst, a modified high efficiency catalyst regenerator (80), with a fast fluidized bed coke combustor (62), dilute phase transport riser (83), and second fluidized bed (82) regenerates the catalyst in at least two stages. The primary stage of regeneration is in the coke combustor (62), whereas a second stage catalyst regeneration occurs in the second fluidized bed (82). The amount of combustion air added to, and conditions in, the coke combustor (62) are controlled to limit CO combustion, while the second stage of regeneration, in the second fluidized bed (82), achieves complete CO combustion. Controlled multi-stage regeneration reduces steaming or deactivation of a catalyst during regeneration, increase coke burning capacity, and reduces NOx emissions.
    • 在FCC催化剂的受控多级再生过程中,使用快速流化床焦炭燃烧器(62),稀相运输提升器(83)和第二流化床(82)的改进的高效催化剂再生器(80) 在至少两个阶段再生催化剂。 再生的主要阶段在焦炭燃烧器(62)中,而第二阶段催化剂再生发生在第二流化床(82)中。 控制焦炭燃烧器(62)中的燃烧空气量和条件,以限制CO燃烧,而第二流化床(82)中的第二再生阶段实现完全的CO燃烧。 受控的多级再生减少了再生期间催化剂的蒸发或失活,增加了焦炭燃烧能力,并且减少了NOx排放。