One of the key defining differences among industrial centrifuges is between “two-phase separation” and “three-phase separation.” Two-phase centrifuges (like the CentraSep S-126) are generally used for liquid-solid separation. For example, a two-phase centrifuge might be used to pull paint sludge from wash fluid.
Three-phase centrifuges remove a solid from suspension while also separating two liquid phases (also called “liquid-liquid-solid separation”). A good centrifuge can remove metal fines from cutting fluid while also separating out tramp water—all in a single pass.
When it comes to industrial three-phase separators, disc stack centrifuges (i.e., “disc bowl centrifuges” or “conical plate centrifuges”) are of special interest for their flexibility and performance. Among these, the CentraSep DX Series leads the pack. It can dynamically switch between three-phase and two-phase operation—a single filtration module that takes on the varied liquid phase and liquid-solid separation tasks with consistently high efficiency.
Intro to Three Phase Separators
A centrifuge is basically an accelerated settling tank with the outside of the centrifuge’s vessel serving as the settling surface where the densest material collects. In many industrial centrifuges, the overall shape of the vessel is such that denser material collects and is forced out of one end of the centrifuge, while less dense material flows out the other. Two ends means two-phase separation.
A disc stack centrifuge, like the CentraSep DX Series, is different. The CentraSep DX separators have two top outlets (labeled #6 and #7 in the diagram) and a separate solids collection and discharge at the bottom (labeled #9). With three discharge points, you get continuous three-phase operation: two different liquid phases at the top outlets and sludge or other solid particles from the lower discharge.
The key element is the “disc stack” (labeled #3). The “discs” are a series of cone-shaped plates arranged in a vertical stack inside of the centrifuge vessel, which increases the amount of available settling surface. Having a greater settling surface doesn’t just speed the separation process and decrease retention time. It also gives you a great deal of fine control over what’s happening inside your separator. Enhanced control makes it possible to separate several phases in a single pass. By changing the stack arrangement, angle, spacing, and shape, you can accurately control how materials are separated and adjust for changes in liquid flow and composition.
Owing to this enhanced zone of separation control, the CentraSep DX Series can handle challenging three-phase separations with 70 percent efficiency (or better) on a single pass. When you find yourself running a simpler liquid-solid separation, you can quickly switch to a two-phase operation and bump up to nearly 90 percent efficiency on a single pass.
A Process-Oriented Approach to Three-Phase Centrifuge Separation
Service has been the backbone of our business for decades. If you already have a centrifuge, we can help you get more out of it. Trucent Centrifuge Parts and Repair will refurbish, repair, maintain, and program all makes and models of high-speed disc stack centrifuges.
But we aren’t just centrifuge repair techs and sales reps. Trucent is dedicated to a process-oriented approach to separation and purification. We’ve spent decades building teams that bring together people who understand equipment, people who understand liquid separation at a fundamental level, and people who understand your specific fluids, processes, and industry. That team works with you to find the right intervention, use the right technology, and match it to the right application.
And then we can go one step further. We can install a team in your plant to run and manage all your fluids and filtration technology on a daily basis. Your in-house Trucent team will do more than just handle fluid purchasing and manage separator technology. They’ll pinpoint contaminants at their source and find ways to separate these contaminants from your flow as early as possible.
The results: Top performance in your plant, every single day, hassle-free. No one else offers this level of comprehensive service.
Every solution begins with a conversation. Contact us today to begin that conversation, or schedule a no-obligation on-site consultation. A Trucent engineer will “walk your process,” sampling your liquids pre-process, post-process, and at every important stage along the way. We’ll take samples back to our labs for analysis, then design a separation solution that will meet your spec and your business goals. Every solution is pilot tested in our labs and trialed on-site as needed. We never commit to a solution until we know it will work in the real world.
Comprehensive Purification, Filtration, and Liquid-Liquid/Liquid-Solid Separation Solutions & Services
Trucent comprehensively addresses your centrifugal and centrifugation needs. We can help you maintain your existing centrifuges and decanters—or design an entirely new liquid-liquid-solid separation solution. We can install one piece of equipment or an entire team to manage all your filtration technology on a daily basis. The goals remain the same: Cleaner fluid, longer tool life, higher quality parts, and a healthier bottom line.
Plant engineers determined that an annual discharge and cleaning of the central coolant system would pay off in reduced operational costs.
On top of preventing over 12,500 gallons of chemicals from entering the waste system, the facility was able to bank the overtime hours and over $200,000 in savings.
“Quick responses, personal service, and knowledgeable technicians are able to achieve desired results with little fuss or disruption of our process.”
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