Abdulmajeed Al Katheeri - ADNOC Refining, Research Centre Division
Loss of catalytic activity & selectivity over time is a big problem with great concern at current catalytic refining (FCC-RFCC) process. In order to maintain the catalytic activity, big addition of a catalyst is mandatory every day, which is expensive for the refiners. Hence, looking for new catalysts and its evaluation under laboratory level research is essential. In order to bring the fresh catalysts into E-Cat, we developed a protocol for catalytic deactivation.
In order to evaluate the catalytic activity of commercial catalysts from various manufacturers, the fresh catalysts should be deactivated artificially by metallation technique to approximate properties of E-Cat as in real operating conditions. Fresh commercial catalysts were subjected to CMD (Cyclic Metal Deactivation) artificially by injecting a known amount of metal naphthenates. CMD was repeated for 45 cycles and each cycle consists of cracking, stripping and regeneration.