Alfa Laval Centrifuge Systems
Dolphin Centrifuge is an industrial centrifuge manufacturer. For over 35 years, we have specialized in Alfa Laval industrial centrifuges with complete ‘turn-key’ systems engineered for all industrial and commercial centrifuge applications.
Tamp oil and fine metallic sediment can be simultaneously removed from water-based machining coolants. A 3-phase centrifuge is custom configured as a machining coolant centrifuge to extend the usable life of water-soluble & synthetic coolants. The liquid-liquid separation separates the tramp oil while the liquid-solid separation effect removes the fine metal particles as disposable sludge. An Alfa Laval metalworking coolant centrifuge skid (as seen above) is a durable, long-term solution for large volume, continuous separation of machine coolant.
Contaminated machining oil can be effectively recycled using a industrial fluids centrifuge. Dolphin Centrifuge’s vertical disc stack centrifuges separate metal particles and free water from cutting oil lubricants. Setup in a ‘kidney-loop’, the centrifuge keeps the contaminant at a low level in the oil reservoir.
As a manufacturer of customized centrifuge systems, Dolphin Centrifuge has supplied small and large scale centrifuges to industrial manufacturers. Image shown is a 20 GPM centrifugal separator for recycling Mobilmet 766 cutting lubricant at an auto supplier.
Wire drawing is a metal working process to reduce the cross section of wire by pulling it through a series of dies with reduced hole sizes. The lubricant used in the process is contaminated by fine metal, rust and scaling particles. Alfa Laval centrifuge (with a ‘self-cleaning’ bowl) purifies the lubricant in aluminum and copper wire drawing processes by removing metal particles down to 0.5µ size. Filters are not practical in such applications due to the small size of particles. Centrifuge skid shown here is a ‘turn-key’ module manufactured by Dolphin Centrifuge to purify aluminum drawing oil for a global aluminum wire manufacturer.
Quench oil has inherent properties such as hardening ability, heat resistance, thermal stability etc. Over time, contamination causes these properties to degrade leading to product quality issues and replenishing of costly oil frequently. Industrial centrifuge processing of heat-treating oil eliminates R&O fine particles and coarse resin particles. This recycling process extends the usable life of heat treating oils. The Alfa Laval centrifuge module shown here was designed and manufactured by Dolphin Centrifuge for a large heat treatment supplier in the mid-west.
Stamped and machined metal components are washed with water with chemicals to remove debris and oils. Industrial wash-water from such applications is effectively cleaned and reused using an Alfa Laval 3-phase disc stack centrifuge. Wash-water centrifuges are specially designed to remove tramp oil and sediment from washing solutions from industrial parts washers. The centrifuge system shown processes 5 GPM of washer fluid in a closed loop washing system at an auto-supplier.
Heating, decanting and filtration is costly and labor intensive for large scale processing of WVO and similar waste oils. Industrial WVO centrifuges are ideal for continuous separation of water and sludge from grease trap waste, yellow grease and other forms of WVO. Alfa Laval disc stack centrifuges, supplied by Dolphin Centrifuge, are widely used for separating solids and water from WVO and UCO. These centrifuge machines can be setup as two-phase clarifier or three-phase centrifugal separators.
Waste oils (used motor oil, hydraulic oil, lube oil etc.) are reused as stock for black diesel, regenerated engine oil, heating oil and other applications. However, prior to reuse, they need to be purified to separate water and solid contamination. Alfa Laval self-cleaning centrifuges work as mechanical filter machines without the need for filter media or expensive labor. Centrifugal separation machines also remove water from waste oil.
Dolphin Centrifuge designed and manufactured the displayed industrial centrifuge package to separate used engine oil from water and sludge at 60 GPM. This three-phase centrifugal separator generates 8000 times the force of gravity to separate particles down to 1 micron level to generate purified oil.
Decanter centrifuges are used for municipal and industrial de-watering and sludge thickening applications. Using mechanical separation instead of filter media, industrial centrifuges offer several advantages including significantly lower labor cost (if any) and reduced disposal costs. As an experienced manufacturer of wastewater centrifuge systems, Dolphin Centrifuge manufactured this complete de-watering systems (shown here) using a Sharples P3000 decanter with clean water tank, feed pump and other accessories.
High-g, two-phase centrifugal separators are a cost-effective solution to clarify runoff water from fine fine solids prior to sewer discharge. Alfa Laval self-cleaning centrifuge is an efficient clarifier of suspended particles from water.
Separating biomass from hemp solvent mix is a challenge for CBD oil production. Filters, filter presses and screw-presses are labor intensive and only suitable for small volume batch processing. For larger volumes, a mechanical separator is more efficient for continuous separation of solvent from hemp biomass. Dolphin Centrifuge has been working closely with hemp producers to maximize solvent extraction efficiency using centrifuges. Alfa Laval food grade, explosion proof decanter centrifuges have demonstrated efficiency in the extraction phase of CBD oil production. A 40 GPM decanter centrifuge for hemp (shown here) was recently supplied for bulk hemp biomass solvent separation in the mid-west.
Food-grade, disc stack centrifuges, with all stainless steel contact, have a much higher centrifugal force to separate the lipids and waxes at the ‘polishing’ stage. Alfa Laval vertical centrifuges replace filtration systems wherein the filters plug-up easily with the sticky waxes and plant lipids.
Stored diesel is often contaminated by condensed moisture, microbes, rust sediment and other contaminants.
A diesel purifier separates all free water and sludge from the diesel on a continuous basis. Unlike filters, a centrifuge does not use replaceable filters or media. A diesel purification system with a ‘self-cleaning’ stack disc Alfa Laval centrifuge is installed in a re-circulation loop on the day tank. The centrifuge is able to maintain the diesel fuel impurities in the storage tank at a low level while separating & discharging all impurities.
Displayed image shows a duplex diesel centrifuge skid, manufactured by Dolphin Centrifuge for an off-shore oil rig and certified as an explosion proof centrifuge.
Fuel Oil Centrifuge
Fuel oil is primarily used to run large engines at cogeneration power plants. Engine manufacturers stipulate HFO to be at a high purity level for efficient and reliable operation of the plant. Fuel oil procured from non-reliable sources often has high levels of water and solids. Vertical centrifugal separators are used to purify the HFO before feeding to the engine.
A ‘plug-n-play’ fuel oil purification module (shown here) was supplied to a power utility in Latin America to help convert their diesel engines to operate on Heavy Fuel Oil. This Dolphin Centrifuge system included an Alfa Laval centrifuge with in-line electric heaters and high pressure pumps to facilitate the use of HFO instead of diesel by reducing the viscosity & increasing the supply pressure to the engine. The operating cost savings by switching fuels was significant enough to justify the cost of the centrifuge system.
Lubricating oil is the lifeline of a power plant engine or turbine. Condensation and bearing wear particles are the primary impurities in steam turbine lube oil. Lube oil centrifuge modules maintain moisture and particle contamination to a minimum level which reduces downtime and improves equipment reliability.
A compact lube oil centrifuge system from Dolphin Centrifuge has a small foot-print and supplied with castors to offer mobility. The explosion proof centrifuge cart (shown above) is suitable for hazardous areas such as an off-shore gas platform. A similar lubricating oil centrifuge package can also be used to purify hydraulic oil without any modifications.
Environmental consideration and cost of replenishment of hydraulic and lube oils are primary considerations for recycling hydraulic oil.
Hydraulic oil tends to accumulate particle contamination over time. This leads to premature wear and failure of critical machinery which uses the hydraulic oil. The easiest way to extend the life is to remove small particles from the oil on a continuous basis.
An industrial disc stack centrifuge is proven in the removal of fine particulates (down to 0.5µ) from hydraulic and lubricating fluids. The hydraulic oil centrifuge generates highest centrifugal forces (among centrifuges) which effectively removes all particles and water (if any) simultaneously. Water removal is an added benefit of Alfa Laval 3 phase centrifuges.
Algae extraction or algae cell harvesting requires processing large amounts of water to concentrate small amounts of cells. The miniature size of the cells and the fact that their specific gravity is close to the medium (water) makes this is a challenging application for any separation process using media i.e. filters, presses etc.
Algae centrifuges are efficient at large scale harvesting and algae separation. The extremely high centrifugal force produced inside the bowl of a disc stack centrifuge is sufficient to separate the algae cells from water. The process can be scaled up with a centrifugal mechanical separator to production scale.
Dolphin Centrifuge supplied ‘self-cleaning’ algae separator are highly efficient at separation of algae cells from water phase as can be seen in before/after field results above.
Biodiesel is produced by the chemical reaction of vegetable oil with lye or other caustic agent and alcohol. This is also known as esterification. The reaction creates biodiesel and glycerol (glycerin mixed with alcohol). The heavy phase (glycerol) can be decanted naturally from the lighter biodiesel and drained to produce crude biodiesel. This is a time consuming process which also requires additional storage capacity and does not produce pure biodiesel.
Alfa Laval centrifuges for biodiesel offer a quick and cost-effective way to separate glycerin continuously during the esterification process. Centrifugal separators, specially modified by Dolphin Centrifuge for biodiesel, separate the glycerol to produce pure biodiesel. Teflon coated biodiesel centrifuge system shown above was designed and manufactured for a domestic biodiesel producer.
Crude oil extracted from the ground carries saltwater and sand or other sediment. Producers often use settling tanks to separate sale oil from Bottom Sediment & Water also known as BS&W. The residue left in the settling tanks is known as tank bottoms. Considerable oil is still left in tank bottom sludge and can be recovered for additional revenue.
An Alfa Laval industrial centrifuge is a cost-effective solution for tank bottom processing to recover sale oil. Crude oil centrifuges are also used at SWDs for produced water separation and other oilfield de-sludging applications.
Dolphin Centrifuge has been working with owners and operators to design engineered solutions for efficient, low-cost oil recovery. Our containerized Oil Recovery System (click above for a virtual walk-through) is a ‘self-contained’ module designed for remote field applications to process tank bottoms and recover sale oil with less than 0.1% BS&W.
What Our Clients Are Saying
For the ongoing reservoir side centrifuge filtration you are looking for I would suggest you contact Sanjay at Dolphin Marine. I have been dealing with Sanjay for over 15 years now and he is by far the best at what he does. Aside from the fact he can provide a custom solution for you at the best price, his service is excellent. He has even answered my call in the middle of the night before when he was in Japan on a startup.
Thank you! for your continued support. Both machines are ripping through the stream – good separation. We’ll be calling you shortly for 2 more.. stay tuned.
By the way Jim (Kraft) is very good. He really knows his centrifuges and the process. I am so glad that we brought him in.