Validation And Utilization Of CFD For Reducing Co Emissions From An Fcc Regenerator
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Type
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Conference
Paper
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Author
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James
Parker
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Author
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Peter
Blaser
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URL
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Place
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Abu Dhabi
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Date
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February
2015
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Conference
Name
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5th
Annual TRC- Idemitsu Workshop “The role of collaboration in enhancing
Refining Industry R&D” 11th - 12th February 2015, TRC, Sas Al Nakhl, Abu
Dhabi, UAE
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Abstract
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A
North American refinery was seeking improvement to a full-burn FCC
regenerator that had been experiencing high levels of carbon monoxide (CO) in
the flue gas despite the presence of significant excess oxygen. The
regenerator also experienced excessive refractory erosion in the upper
freeboard near the cyclone inlets. A computational fluid dynamics (CFD)
simulation was performed to calculate the three-dimensional, transient, coupled
gas-particle hydrodynamic and thermal behavior of the regenerator
simultaneously with heterogeneous coke-combustion and homogeneous gas-phase
chemical kinetics.
The model enabled informed discussions between the refinery and a technology supplier by identifying the root cause of the high CO emissions to be related to the spent catalyst distributor. The model was then used to verify that the suggested hardware changes would address the refinery’s concerns without adversely affecting other aspects of regenerator reliability or performance. |
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