Heavy metals in balance agents
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Does the heavy metal content in balancers have a significant impact on the catalytic cracking reaction?
This is definitely harmful; a passivator can be injected to reduce the degree of poisoning.
It affects the catalyst’s activity; in severe cases, the catalyst becomes inactive and is no longer able to carry out catalytic reactions. Carbon buildup tends to form easily. Regular replacement of the catalyst is carried out on a regular basis, and passivators are added to the raw materials; this is done, in part, to reduce the level of heavy metals in the catalyst and prevent catalyst poisoning
Is adding a passivator mainly to address the impact of heavy metals in the raw materials, or to address the impact of heavy metals contained in the balance agent itself?
The degree of impact increases with the increase in heavy metal content; the activity and selectivity of the catalyst deteriorate, especially for nickel and vanadium.
The active components of the metal passivator are deposited on the surface of the catalyst along with the raw materials; they react with nickel vanadium metals either to form metal salts or to cover the surface of the contaminated metals in the form of a film
A great impact. It is clearly stated in the technical Q&A
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