The problem of catalyst poisoning in catalytic cracking units
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Which substances in the feedstock can cause permanent poisoning of the catalyst, and which substances cause temporary poisoning that allows the catalyst to be regenerated?
This post was last edited by wlf1234 on 2019-10-25 at 10:30. Metal poisoning is a permanent form of poisoning: V, Ni, Na, Ca, etc； Alkaline nitrogen and carbon deposition coking cause temporary poisoning, which can be reversed.
Does the passivator have an inhibitory effect on heavy metals in the balancing agent?
It has an inhibitory effect; in our production process, we use metal passivators to passivate the heavy metals on the catalysts