AM-94-44 Improved FCC Yields Through Combination of Catalyst and Process Technology Advances

Description:

This paper discusses the types of yield changes which can be expected in a revamp scenario incorporating the latest riser termination designs, particularly when catalyst change effects are included. Both fresh catalyst properties and catalyst management policy are important variables. Process model studies for several hypothetical operating cases are presented, including the use of a high activity catalyst for maximum conversion or throughput, a high matrix catalyst for reducing slurry yield, a metals tolerant catalyst for processing resid feed, and a high olefin selectivity catalyst for a reformulated gasoline scenario. In all cases, improved yields are achieved when incorporating catalyst change effects which may not have been possible without the advanced hardware due to unit constraints. Commercial data from several operating units which have implemented these systems is presented which also highlights the interaction between process and catalyst improvements.