Operations during the catalytic riser feeding process
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This post was last edited by Refiner on 2017-8-6 09:36. Why is it required to open the nozzles symmetrically when feeding the lift pipe?
Uniform feeding ensures the production of ideal products.
Even feeding ensures that the crude oil comes into uniform contact with the catalyst, thereby facilitating better fluidization
Diagonal opening prevents uneven feeding and coking on the injector wall
It is to prevent the deviation of the feed material, as well as to avoid damage to the lift tube lining caused by the nozzles; it is also not acceptable if the pressures of the two symmetric nozzles are different.
To prevent uneven flow, the spray points of the nozzles meet at the middle of the lift pipe; if only one nozzle is used, the spray will hit the wall of the pipe