Required Throughput, Certified / OEM Capacity, Heater Duty, Separation Temperature, Sludge Yield & One-Unit-Out Margin

Marine Fuel Oil Purifier Capacity, Throughput, Heating & Sludge Production Tool

Convert daily fuel demand into the flow that must actually be treated, compare it with certified or OEM separator capacity for the real fuel, calculate preheater duty to reach the separation setpoint, estimate sludge generation and identify low-margin operation. Advanced mode adds engine-derived fuel demand, one-unit-out redundancy, viscosity-temperature screening, detailed heater / steam demand, bowl-discharge water, sludge-tank endurance and annual treatment cost.

Data type
Currency
Currency selection changes display only. No exchange-rate conversion is performed.
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Need much more depth? Click Advanced above. Add engine-derived demand, one-unit-out capacity, viscosity-temperature screening, detailed heater / steam duty, water and solids removal, discharge-water volume, sludge-tank endurance and annual operating cost.

Fast Fuel-Treatment Screen

Use the separator maker's certified / recommended capacity for the actual fuel wherever available. The performance factor is an explicit project/OEM input, not a universal derating rule.

t/day.
kg/m³.
% above daily engine consumption.
h/day.
m³/h for the relevant fuel / test basis.
% of entered certified / OEM flow usable for this case.
°C.
°C. Use the actual separator / fuel requirement.
% of processed fuel mass. Simple screen only.

Demand Basis

days/year.
Engine groupQtyPower each kWLoad %SFOC g/kWhHours/day

Separator Package & Redundancy

m³/h.
%.
% of effective per-unit capacity.
% of daily purifier operating window.
kW.

Viscosity & Separation Temperature

The two-point viscosity estimate is a planning interpolation using a Walther-type relationship. Use laboratory data and the separator maker's specified separation temperature for final operation.

cSt.
°C.
cSt.
°C.
cSt, editable OEM/project target.
°C.
K, project/OEM operating screen.

Purifier Heater & Thermal Supply

kJ/kg·K.
% of heater duty.
%.
kWth.
kJ/kg of steam.
Selected currency / kWhth.
Selected currency / kWh.

Water, Solids, Oil Loss & Sludge Tank

% mass of processed fuel.
% mass.
kg/m³.
% of processed fuel volume.
L/discharge per online separator.
hours.
m³.
%.
Selected currency / m³.
Selected currency / year.

Fuel-Treatment Readiness

Fuel-treatment screening only: this tool is not an OEM separator selection program, EN 17763 certified-flow test, class-approved fuel-system calculation, viscosity laboratory result, cat-fine removal guarantee, gravity-disc / interface selection, heater pressure-vessel design, steam-system design or sludge-disposal approval. Use certified or maker-recommended separator capacity for the actual fuel, temperature, viscosity and separation target.
Reference basis: EN 17763:2022 defines a repeatable method for determining marine-fuel centrifuge particle-separation performance and certified flow rate under defined test conditions. Reported CFR values are verified measured values on a defined CFR test bench, and the standard excludes scaling based only on Stokes-law or disc-stack design. Wärtsilä's current engine product guidance states that separator feed pumps should be dimensioned for actual fuel quality and the recommended separator throughput, that feed-rate control is required, and that recommended separator preheat temperature depends on viscosity; one current product guide gives typical values around 98°C for HFO and 20 to 40°C for MDF while directing users to the separator manufacturer for the optimum operating temperature. EN 17763:2022 summary · Wärtsilä 20 product guide
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