UOP Offers Refiners Packing Option to Strip FCC Catalysts

D’Aquino, Rita

Refiners have responded to increasing demands for olefins, gasoline or distillate by increasing the raw oil throughput in their fluid catalytic cracking (FCC) units and by implementing other FCC technologies, that intensify catalyst circulation. UOP LLC’s (Des Plaines, IL; www.uop.com) AF spent-catalyst stripper technology, which features trays and grids (U.S. Pat No. 6,740,227 and 6,680,030, respectively) that improve both the yield and selectivity of FCC products – now includes a packing option. The first commercial application of AF packing is expected to be operational in spring of 2005 at a major U.S. refinery.

AF spent-catalyst stripper technology can be applied to any FCC unit and stripper styles to enhance catalyst-oil contacting operating at catalyst fluxes consistently above 120,000 Ib/ft^sup 2^h,” says UOP’s refining marketing manager, Mark Houdek. One large FCC unit that was revamped to the AF tray design realized a delta coke reduction of 0.04 wt.%, which lowered the regenerator temperature by 14°F, and improved conversion by 2.3 vol.%. In another case, a small FCC unit installed AF grids and improved conversion by 3.0 vol.% and gasoline yield by 2.8 vol.%. “Most applications of AF technology afford a return on investment in a matter of months,” affirms Houdek.

Copyright American Institute of Chemical Engineers Jul 2004

Provided by ProQuest Information and Learning Company. All rights Reserved

You May Also Like


CATALYST RECOVERY – PART 3: Removing Contaminants from Spent Catalysts Jacobsen, Robert T Pre-burning prior to recovery/refining enh…

Narrowing down equipment choices for particle-size reduction

Narrowing down equipment choices for particle-size reduction Clement, Scott Fluids/Solids Handling Properties of the feed, sp…

Ease control valve selection

Ease control valve selection Bishop, Trevor Fluids/Solids Handling With so many types and options available, choosing the rig…

Maximize fuel efficiency of cogeneration systems

Maximize fuel efficiency of cogeneration systems Polley, Graham T Use this systematic procedure to design a gas-turbine-based cogene…