fccu slurry pump selection - refining community...temperature of the application private &...
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FCCU Slurry Pump Selection
Jason Allaire, Product Manager
Lawrence Pumps Products
Flowserve Corporation
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Private & ConfidentialPrivate & ConfidentialPage 1
FCCU Slurry Pump Selection
Factors that impact slurry pump selection
� Abrasiveness of different applications
� Impact of operating off the best operating point of a pump
� Impact of operating the plant to get the best pump life
� Different pump designs and material choices available
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FCCU Slurry Pump Selection
Abrasiveness of different applications
� Type of solids: Hardness, Size, and Shape
� Fluid velocity through the pump
� Solids percentage
� Temperature of the application
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FCCU Slurry Pump Selection
Impact of operating off the best operating point
Typically Pumps want to operate at BEP between 75% and 110%
Slurry Pumps should operate as close to BEP as possible. Eddies created at non-BEP flows drastically increase erosion.
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FCCU Slurry Pump Selection
� High percentage of solids through a pump at the BEP flowrate.
� Even at BEP solids impact the metal walls as they change direction.
� Heavier solids cyclone out hitting the pump walls at steeper angles and higher forces increasing wear
Impact of solids within a pump.
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Private & ConfidentialPrivate & ConfidentialPage 5
FCCU Slurry Pump Selection
Typical FCCU Slurry Pump Around
Main Column Bottoms Pump
Product Pump
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FCCU Slurry Pump Selection
Impact of operating the plant to get the best pump life
� Flow rate of pumps based on achieving the proper heat removal rate for the process
� Consider selecting a better slurry pump design allowing reasonable life at alternative flow rates
� Erosion resistant metals like high chrome iron have been proven to outlast alternatives often by four times.
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FCCU Slurry Pump Selection
Different pump designs and material choices available
HPX/HNN - API 610 pump
with hard coating
HPX6000 - API 610 pump with full hard metal liners
designed for slurry service
Aftermarket Replacement - API 610 pump with
partial hard metal liners and coated diffuser
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True slurry impeller design with repelling vanes at front & back prevent slurry recirculation
Inherent safety “Pump within a pump”Outer pressure casing fully protected from erosive wear
High chrome iron liners and impeller for excellent abrasion resistance available in thermal shock resistant high chrome iron (SR-250®)
Modular design allows pump internals to be replaced with new hydraulics without impacting the outer pressure casing
FCCU Slurry Pump Selection
Heavy Slurry Pump Design
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FCCU Slurry Pump Selection
HPX6000 – High Percentage Slurry Example
Suction Side
Mechanical Seal Side
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Thank you!
Jason Allaire, Product Manager
Lawrence Pumps Products
Flowserve Corporation