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公开(公告)号：US11975315B2
公开(公告)日：2024-05-07
申请号：US17609764
申请日：2019-05-10
Inventor： Jinling Zhang , Mao Ye , Zhongmin Liu , Jibin Zhou , Tao Zhang , Xiangao Wang , Hailong Tang , Jing Wang
Abstract: Disclosed is a method for partially regenerating a catalyst for methanol and/or dimethyl ether-to-olefin. The method comprises: introducing a mixed gas into a regenerated region containing a catalyst to be regenerated, and subjecting same to a partial regeneration reaction to obtain a regenerated catalyst, wherein the mixed gas contains water vapor and air; and in the regenerated catalyst, the coke content of at least part of the regenerated catalyst is greater than 1%. The method utilizes the coupling of a mixed gas of water vapor and air to activate a deactivated catalyst, selectively eliminate part of a coke deposit in the catalyst to be regenerated, and obtain a partially regenerated catalyst for methanol-to-olefin. Another aspect of the present invention is that further provided is a method for methanol and/or dimethyl ether-to-olefin by using the partially regenerated catalyst for methanol-to-olefin regenerated by means of the method.
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2.发明授权公开(公告)号：US11504703B2
公开(公告)日：2022-11-22
申请号：US16767268
申请日：2017-12-05
Inventor： Mao Ye , Jibin Zhou , Tao Zhang , Jinling Zhang , Yinfeng Zhao , Xiangao Wang , Jinming Jia , Hailong Tang , Zhongmin Liu
Abstract: The present application discloses a method for partially regenerating a methanol to olefin catalyst, comprising: placing a deactivated methanol to olefin catalyst in a regenerator to carry out a partial regeneration reaction to obtain a regenerated catalyst; at least a portion of the regenerated catalyst has a coke amount of more than 1%. The present application discloses a methanol to olefin process, the methanol to olefin reaction is carried out in a fluidized bed with the use of a methanol to olefin catalyst, wherein at least a portion of the regenerated catalyst has a coke amount of more than 1%.
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