Problems with catalytic precoolers
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The units are coaxial; a catalyst pre-cooler was added to the regeneration slope line through technical upgrades. The heat removal capacity of the precooler is adjusted by regulating the fluidization air at its bottom; it is not clear how this fluidization air affects the heat removal capacity. I am not very familiar with the working principle of the precooler, so I hope the experts can provide some guidance! Thank you!
Similar to external heat extraction, but it is more difficult to adjust and affects the feeding rate through the inclined tubes as well as the temperature of the reagent
It is by changing the density of the small fluidized bed that heat transfer is altered.
Has there been any improvement in liquid yield and product distribution? What’s the effect?
The external heat exchanger of the device operates on the same principle: its purpose is to lower the temperature of the catalyst as it enters the lift pipe, thereby increasing the catalyst-to-oil ratio
To use it, a comprehensive consideration is necessary