09-07-2020 дата публикации
Номер: US20200215525A1
Принадлежит:
The present invention provides a method of cooling a regenerated catalyst and a device thereof, which employs low-line-speed operation, wherein a range of the superficial gas velocity is 0.005-0.7 m/s, wherein at least one fluidization wind distributor is provided, wherein the main fluidization wind enters the dense bed layer of the catalyst cooler from the distributor, and the heat removal load of the catalyst cooler and/or the temperature of the cold catalyst is controlled by adjusting the fluidization wind quantity. The method and a device thereof of the present invention has an extensive application range, and can be extensively used for various fluid catalytic cracking processes, including heavy oil catalytic cracking, wax oil catalytic cracking, light hydrocarbon catalytic conversion and the like, or used for other gas-solid fluidization reaction charring processes, including residual oil pretreating, methanol to olefin, methanol to aromatics, fluid coking, flexicoking and the like. 112-. (canceled)13. A method of cooling a regenerated catalyst , comprising providing a catalyst cooler comprising a catalyst outlet , at least one fluidization medium distributor , heat exchange tubes , a dense phase fluidized bed , and a catalyst inlet;providing hot catalyst particles, wherein the hot catalyst particles enter from the catalyst inlet, flow downwardly through the dense fluidized bed, and are cooled by pipe wall of the heat exchange tubes, and the cooled catalyst flows out from the catalyst outlet at its bottom; andfeeding a fluidized medium from the at least one fluidization medium distributor at the bottom, wherein the fluidized medium flows upwardly through the dense phase fluidized bed, along with a removed gas that is entrained by the hot catalyst particles from a regenerator, and returns to the regenerator.14. The method of claim 13 , further comprising:adjusting a flow rate of the fluidized medium and/or adjusting a flow rate of the cooled catalyst leaving ...
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