The issue of heavy metal content in FCC catalysts
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Recently, the vanadium content of heavy metals in Device Cat has risen to 5000 ppm. Is 5000 ppm a high level? What impact will it have on production? What measures should be taken? I hope to receive guidance from all the teachers. Thank you!
It’s a bit high; generally, the concentration of any single heavy metal should not exceed 5000 ppm. Attention should be paid to the risk of sodium poisoning caused by excessively high levels of vanadium. It’s just my personal opinion; please correct me if I’m wrong.
It’s very high; there shouldn’t be any problems with adding the raw material passivator, right?
Was no metal passivator added? The pit will definitely affect the catalyst's activity
Passivators have a limited effect on vanadium; vanadium poisoning damages the catalyst’s molecular sieve, leading to catalyst deactivation and an increase in the amount of fine powder. If the sodium content is higher, this effect is even more pronounced; it is recommended to increase the amount of catalyst that is replaced
The relative content is relatively high; as mentioned earlier, it has a significant impact on catalysts. There are many types of passivators designed to address the problems caused by specific heavy metals! ! ! Also, it’s necessary to control things at the source; the quality of the raw materials plays a very important role as well! ! ! ! ! ! ! ! ! !