Following the successful commercial deployment of the CAN-15 hydrocracking catalyst at Saudi Aramco’s Riyadh Refinery,the collaborating teams from Aramco R&DC and Japanese JGC C&C developed a new light olefin selective FCC catalyst based on a newly developed USY zeolite.The catalyst,labelled as CAN-FCC3,was tested in a lab scale ACE reactor for converting hydrocracking bottom(HCB)feedstock to light olefins,especially propylene and butenes,at the FCC Laboratory of KFUPM under a technical laboratory services agreement.Two sets of parallel tests on CAN-FCC3 were administered:(1] cracking catalyst only mode in comparison with a JGC C&C’s standard FCC catalyst and [2] cracking catalyst with olefin additive mode in comparison with a top-tier olefin-selective FCC catalyst from another catalyst vendor.The cracking activity of CAN-FCC3 catalyst was found to be similar to that of JGC C&C’s standard FCC catalyst,but CAN-FCC3 was more selective in producing naphtha range olefins from the HCB feed.When a JGC C&C’s proprietary olefin additive was included in the ACE testing at 10 wt.% of the catalyst load of CAN-FCC3,the combined light olefins(C2~=-C4~=)yield reached 54%(26.7%-propylene alone] in comparison with 40.6%(17.7%-propylene alone)of the test run with the top-tier olefin-selective vendor catalyst,which contains 10 wt.% olefin additive in the catalyst formulation.
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