Catalytic cracking catalyst recovery
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This post was last edited by lijianhuai on 2011-6-28 15:01. Can catalytic cracking catalysts be regenerated? What are the requirements for regeneration conditions?
Reply 1# sun-rock Hello! I work in the field of catalysts! I hope to learn from you!* QQ45966605 Phone: 13973535757 Mainly recovers old catalysts containing metals. Production of palladium chloride, platinum carbon. What are your QQ and phone number?
Reply to 1# sun-rock: I’m from Changzhou, Jiangsu. I can purchase your used catalyst at a high price. Contact number: 13701502482; QQ: 1738170552. Company website: www.jshy365.com
Magnetic separation technology can be used to recover the heavy metals contained therein, and it is possible to increase the activity of the catalyst by more than 5 units; however, this has little practical significance. After separation, the specific surface area, pore volume, and bulk density of the catalyst change, and introducing it into the system may affect its operation. If it is to be used, it should be added in small amounts, with close attention paid to any changes in operation. Now, the treatment of catalysts is a major problem.
Our company has used catalysts that have undergone magnetic separation; they are generally mixed with fresh catalysts in a certain proportion. The results are acceptable, but the amount of catalyst required is quite large and its price is not cheap. It would be great if it were possible to recycle them
Waste catalysts from catalytic cracking contain heavy metals such as Ni and V; the N+V content is around 8,000–12,000 ppm. At present, magnetic separation technology is mainly used to separate catalysts with high heavy metal contents. There is yet no technology for separating and recovering these heavy metals from catalysts, not even abroad; it’s just that the heavy metal content in waste catalysts abroad is slightly lower. Recovering heavy metals from catalysts is difficult, and only a small amount of valuable heavy metals can be recovered. Waste catalysts may contain trace amounts of palladium, antimony, or tin, which are introduced during the addition of combustion promoters, but the total amount is very small~~~
Magnetic separation technology involves separating the components in the balancing agent with high levels of heavy metals from those with low levels; the catalysts with lower metal content (having improved parameters such as activity) are returned to the system for further use, thereby achieving the goal of reducing reagent consumption...