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Scrubber installations: guide to successful pump operation27 September 2021 • 09:00-09:45 BST
#marinepropulsion
Part ofMarine PropulsionWebinar Week27-29 September 2021
Panellist documents
Page 2: Ebbe Hecht-Hansen, Iron PumpPage 7: Jonas Jacobsen & John Nielsen, DESMIPage 13: Anders N. Jensen, PureteQ
Scrubber installations - Guide to successful pump operation
Pump selection parameters
❑ Layout▪ L->R or R->L
▪ In-line or end suction
▪ Top pull out / other
❑ Materials
❑ NPSHr
❑ Efficiency
❑ VFD configuration▪ Max. impeller Ø
▪ Best efficiency
Pump installation
❑ Installation (mistakes)
▪ Suction conditions
▪ Level/Height
▪ Sea chest capacity
▪ Piping
▪ Dimensions
▪ Layout
▪ Distance
▪ Valve movement
Scrubber pump control
❑ Pumps in parallel operation
▪ Actual flow vs capacity
▪ Ramping up/down
Thanks for watching
More information is available at
ironpump.com
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ScrubberPSP - Pump selection program
Key features
Design and optimize your system with DESMI pumps
Load and save ship operation profile
Integrated pressure drop calulator
OPEX and CAPEX segmentation options
Visualizes total cost split 0-10 years.
Available for all clients with free license
CAPEX and OPEX → Total cost
Segmentation options• Lowest kWh • Lowest OPEX• Lowest CAPEX• Lowest total cost 5 years• Lowest total cost 10 years
Piping system
Features• Velocity • Diameter• Hydrostatic pressure • Multiple pump option
Pump data
• Pump data available• List prices included• Export data to excel• Load and save operation
profiles
Thank you for your time!
Scrubber installations: guide to successful pump operation Webinar
Anj/27 Sept 2021
Anders N JensenCTOPureteQ A/S
Best practice for pump selection for scrubber system:
Flow base: • Max / Installed engine power• Actual operation power• Port stays / low load
• Dilution needs?• Redundancy consideration
• Pump fluid type:• Sea-water only• Hybrid / closed loop water
Pump size: • Allow overspeed capacity ofpump / VFD setup ?= do not stress out the
pump
• Ability to operate longer periodsat low speeds (40 – 50% speed)
How to avoid installation problems
Optimization of EGCS pumps operation – significant CO2 impact
Pump control: • Match pump flow to actualcompliance situation of theEGCS
Optimization: • Dynamic result of compliance sensors:• Exhaust gas ratio• PAH• Turbidity• Overboard PH
➔ EGCS system selection of selection and speed
Target operation • EGCS electrical use relative toactual engine load (MCR)0,6 to 1 %
➔ Direct impact on CO2