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    • 5. 发明公开
    • METHOD OF SHUTTING DOWN A REACTOR
    • 关闭反应器的方法
    • EP2969172A1
    • 2016-01-20
    • EP14717570.7
    • 2014-03-12
    • Clariant Corporation
    • FRIDMAN, VladimirPANDITRAO, Sunil S.
    • B01J8/04B01J8/02B01J23/26
    • B01J8/008B01J8/0285B01J8/0496B01J23/26B01J38/04B01J2208/00371B01J2208/00637
    • A procedure for shutting down a dehydrogenation reactor having a catalyst bed with a chromium-containing catalyst operating at a first elevated temperature comprises cooling the catalyst bed with a first cooling gas to a second elevated temperature lower than the first elevated temperature, removing the first cooling gas, introducing a reducing gas to the catalyst bed, cooling the catalyst bed with a second cooling gas from the second elevated temperature to a third elevated temperature, removing the reducing gas, cooling the catalyst bed to a fourth elevated temperature, and introducing air to cool the catalyst to ambient temperature, whereby the dehydrogenation reactor is shut down. The second cooling gas may be the same as, or different from, the reducing gas. Moreover, the reducing gas may be purged from the reactor by a third cooling gas
    • 在第一高温下关闭具有在第一高温下操作的含铬催化剂的催化剂床的脱氢反应器的方法包括用第一冷却气体将催化剂床冷却至低于第一高温的第二高温,除去第一冷却 气体,将还原气体引入催化剂床,用第二冷却气体将催化剂床从第二高温冷却至第三高温,除去还原气体,将催化剂床冷却至第四高温,并将空气引入 将催化剂冷却至环境温度,由此关闭脱氢反应器。 第二冷却气体可以与还原气体相同或不同。 此外,还原气体可以通过第三冷却气体从反应器中清除