The function of stirring the oil slurry
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A stream comes out from the slurry return valve assembly and enters the bottom of the distillation tower; it’s called agitation slurry. What is the purpose of this?
The slurry is stirred and fed into the bottom of the tower, serving to stir the material at the bottom and preventing coking due to prolonged retention of the oil slurry there
Isn’t this the same as the effect of stirring steam?
Prevent solid components from accumulating and causing blockages.
Keep the slurry flowing to prevent catalyst or coke buildup at the bottom of the tower