A diesel fuel centrifuge removes water, sludge, rust, and fine particles from diesel fuel using high centrifugal force. Alfa Laval disc stack diesel centrifuges continuously separate free water and solids from stored fuel, day tanks, workboats, generator fuel, and industrial diesel systems. Dolphin Centrifuge supplies reconditioned Alfa Laval diesel centrifuge modules, controls, pumps, heaters, and application support for diesel polishing and fuel purification.
Diesel Fuel Centrifuge
Rust sediment and sludge from storage tanks contaminate diesel fuel. Condensation in tanks causes water contamination. Alfa Laval diesel centrifuges separate all the solid particles & moisture from diesel fuel.
Clean diesel fuel is essential for the trouble-free operation of engines. Contaminant-free fuel is essential for reliable engine performance. Alfa Laval diesel fuel centrifuges are designed to protect your engine room equipment by maintaining a clean diesel supply.
Alfa Laval Centrifuge Selection Guide <<< How to choose an Alfa Laval Centrifuge for your application.
They have proven their efficiency and reliability and have been used worldwide for decades. These Alfa Laval diesel oil centrifuge modules keep the diesel fuel clean when installed between the storage tank and the day tank.
Dolphin Centrifuge supplies a wide range of self-cleaning fuel purifiers for heavy fuel and crude oils. These are available as separate modules and include per-heaters, starter, and PLC control panels.
A recent application using a diesel fuel purifier for large-scale diesel recovery was supplied by Dolphin using an Alfa Laval disc stack centrifuge (self-cleaning type). Learn more about the purifier vs clarifier difference to understand which configuration suits your fuel.
How does a diesel centrifuge work?
Diesel centrifuge operation can be simply explained as follows. Under the extremely high centrifugal force inside the rotating bowl, the water & sludge are spun out towards the outer periphery of the centrifuge bowl. At the same time, the clean diesel moves inwards and is continuously discharged through a 'light phase outlet.
The water is collected and discharged through a separate passage from the bowl periphery. The separated sludge is periodically ejected by the 'self-cleaning' mechanism built into the bowl.
What is a Black Diesel Centrifuge?
Can a centrifuge separate diesel from engine oil?
A centrifuge cannot separate diesel from engine oil. Disc centrifuges use centrifugal force to separate liquids from immiscible liquids. Engine oil and diesel are miscible liquids, i.e., they dissolve in each other. The centrifugal force in a centrifuge separates liquids with different specific gravities that do not dissolve in each other.
Specifications
| Specification | MOPX-205 | MOPX-207 | MOPX-213 |
|---|---|---|---|
| Centrifuge Type | Alfa Laval Self-Cleaning, Disc Stack | ||
| Centrifuge Efficiency | Solid Particles > 1μ; Free Water > 2μ | ||
| Bowl Speed | 7,600 RPM | 6,300 RPM | 4,140 RPM |
| Rated Capacity | 20 GPM | 32 GPM | 90 GPM |
| Diesel Capacity | 14 GPM | 21 GPM | 61 GPM |
| Sludge Space | 0.38 Gal | 1.03 Gal | 3.61 Gal |
| Motor Power | 5 HP | 7.5 HP | 15 HP |
| Dimensions | 4' x 4' | 4' x 5' | 5' x 6' |
| Weight | 1,500 Lbs | 2,500 Lbs | 4,000 Lbs |
Benefits
There are several advantages to diesel centrifuges over conventional filters. Some of the key advantages are listed below.
Sludge and Water Removal
In addition to sludge or solid particles, disc centrifuges also remove water from diesel continuously. Simultaneous water removal is an advantage over filters that only remove solid particles.
High Separation Efficiency
Disc stack centrifuges separate solid particles as small as 0.5 microns from diesel. The centrifuge also separates free water particles down to 2 microns. Fine mesh filters (1-micron level) plug up fast and need constant replacement.
Continuous Performance without Degradation
Centrifuges use high centrifugal force to mechanically separate water and sludge from diesel fuel. Therefore, there is no performance degradation over time, irrespective of the amount of sludge in the diesel.
Filter performance degrades over time as the separated sludge particles block the filter pores.
Automatic Operation without Manual Labor
Self-cleaning diesel centrifuges automatically discharge the separated sludge intermittently. There is no manual labor involved in operating a centrifuge.
Filters require manual replacement periodically, which adds to operating costs and downtime.
Diesel Centrifuge - Class 1 Div 2 for Hazardous Areas
Certain diesel purification applications require the use of specially configured centrifuges due to the location of the application. Offshore O&G platforms, Refineries, etc. need diesel centrifuges classified for Class 1 Div 2 or Class 1 Div 1 areas.
These specific diesel oil centrifuges have special design features that allow their use in hazardous areas. The electrical controls and other electrical components must also be certified for such zones. For EPC diesel centrifuge packages used on offshore platforms, refineries, chemical plants, and Gulf Coast hazardous-area sites, Dolphin can support GA drawings, P&IDs, Class 1 Div 1 or Class 1 Div 2 documentation, SDRL/VDRL submittals, ITP/FAT records, and project closeout documentation. See our EPC industrial centrifuge systems page.
Diesel Purification on Work-boats
Small-footprint Alfa Laval diesel centrifuges are designed for fuel & engine oil purification on vessels such as tugs, barges, yachts, etc.
Typically installed on day tanks, these centrifugal diesel purifiers remove the water and sediment contamination supplying clean fuel while keeping the lubricating oil clean.
At the bottom are diesel centrifuge packages of different capacities featuring Alfa Laval centrifuges.
Centrifuge Modules by Dolphin Centrifuge
Alfa Laval MOPX-210 Specifications
| Flow-Rate | 30 GPM on Diesel |
| Motor | 10 HP |
| Voltage | 230 / 460 V 3-Ph |
| Size | 5' x 6' x 8' (H) |
| Weight | 4,000 Lbs |
Alfa Laval MOPX-213 Specifications
| Flow-Rate | 60 GPM on Diesel |
| Motor | 15 HP |
| Voltage | 230 / 460 V 3-Ph |
| Size | 6' x 6' x 8' (H) |
| Weight | 5,000 Lbs |
Alfa Laval MAB-206 Specifications
| Flow-Rate | 26 GPM on MDO |
| Motor | 7.5 HP |
| Voltage | 230 / 460 V 3-Ph |
| Size | 5' x 6' x 5' (H) |
| Weight | 2,000 Lbs |