Expand Hydrocracker Operating Window Through Process ...

4. ConclusionsGuided by a refiner‘s short term and long term goals, Criterion/Zeolyst‘s hydrocracker catalystsystem solutions help enable refiners to increase profitability while flexibly meeting thechallenges of gasoline and diesel market volatility. The solutions involve complementary state ofthe art hydrocracking catalysts from Criterion/Zeolyst, the best in class reactor internals fromShell Global Solutions, and partnership with the refinery. Through this collaboration, evenduring a period of poor refinery margins and industry emphasis on cost reduction,Criterion/Zeolyst succeeded in enabling DPRC refinery to increase hydrocracker revenue by tensof millions of dollars by prioritizing distillate and heavy naphtha products from the hydrocrackeroperation, reinforced by reduced unit energy costs, by expanding the unit operating window,and by achieving a longer catalyst cycle. The solution for this refiner integrated a stacked bedstate-of-the-art catalyst system with Shell Global Solutions‘ ultra flat quench inter-bed internalsand high dispersion tray technology. Similar success can be anticipated for refiner‘s seekingmarket responsive, flexible hydrocracker catalytic solutions.5. References1. M. Hu, R. Anderson, R. Adarme, C. Ouwehand, and J. Smegal, ―The Era of ULSD – NewChallenges and Opportunities for Hydrocracking Processes,‖ NPRA 2006 Annual Meeting,AM-06-46.2. A. Sharpe, B. Jones, V. Hruska, G. Baumgartner, R. Anderson, R. Adarme, M. Hu, C.Ouwehand and M. Boer, ―A Success Story: Significant improvement in hydrocrackerprofitability with ULSD production through customized catalyst systems, state of the art reactorinternals and outstanding technical cooperation,‖ NPRA 2007 Annual Meeting, AM-07-67.3. R. Karlin, A. Macris, and R. Adarme, ―Dieselization in North America: Flexible Solutionsfor Diesel Production,‖ NPRA 2009 Annual Meeting, AM-09-10.4. Deactivation of Hydroprocessing Catalysts: Thermochemistry of Coke Formation, by PaulR. Robinson, presented at the Second International Symposium on Hydrotreating /Hydrocracking Technologies, American Chemical Society National Meeting, San Francisco,California, September 10, 2006.5. U.S. Energy Information Administration Short Term Outlook on diesel and motor oilprices.6. AcknowledgementsThe authors wish to thank and acknowledge the contributions of many colleagues in preparationand review of this paper:Criterion Catalysts & Technologies: Ward Koester, Mike Hu, Paul Robinson, Zoe StonebrakerShell Global Solutions: Robert Karlin, Aris Macris, Vito BavaroAM-10-145Page 15