There are several FCC units processing a significant amount of low quality feedstock as the cheaper source aimed at cutting the processing cost. The unit performance is significantly deteriorated when coker gas oil is blended to the feedstock because of its high basic nitrogen content. Generally speaking the poisoning to FCC catalyst acid sites related to proton affinity, adsorption and complexing capability of the basic nitrogen. To improving the profitability of FCC unit, research scientists are continuously working on the measures of improving nitrogen-resistant performance FCC catalyst such as increasing acid sites by choosing active matrixes and zeolite modifying.<sup> </sup><br/>Basic Nitrogen species were recently characterized in detail thanks to the advanced technology of FT-ICR MS to help further understanding the poisoning mechanism of FCC catalyst. Based on the progress, a new bottoming cracking FCC catalyst with enhanced active mesopore and acid function for high basic nitrogen feedstock processing was developed, the performance in lab testing and commercial application were reported.

Bottom cracking FCC catalyst for processing high-basic nitrogen feedstock

251st National Meeting (2016)

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