Catalytic start-up
Thread Content
Experience with catalyst transfer fluidization and catalyst loss during the startup of catalytic cracking units
When starting up a catalytic cracking unit, it is necessary to ensure that the reaction catalyst is in good fluidized condition to avoid catalyst leakage. Proper operation and maintenance of the reaction catalyst are key to ensuring the smooth operation of the plant. .
I have indeed encountered cases where the catalyst leaked out; catalyst would come out of the top of the entire chimney, and the ground around it was covered with catalyst powder. The system is still adding the substance continuously
Have you encountered reactor leakage?
The main reason for catalyst loss during startup is too slow addition rate of the additives; in such cases, a large-scale additive feed line should be used to add the additives more quickly. Generally, a balancing agent is used to quickly seal off the material legs, thereby preventing significant loss of catalyst.