Designed for efficient purification of diesel fuel and lubricating oils, two types of Westfalia oil-purifying centrifuges — OSA 7 (automatic type) and the OTB 2 (take-down type)—are representative of the range of Westfalia oil purifiers available for use on service vessels and in offshore platform power-generating facilities.
Westfalia oil-purifying centrifuges are being increasingly specified by diesel engine manufacturers to remove water and impurities from heavy oil, in order to improve engine performance and reduce the possibility of breakdowns due to diesel engine damage. Westfalia oil purifiers are also widely used to remove carbon and metal particles from lube oil; this prevents premature engine wear, reduces downtime, and extends lube oil life.
Because of their automatic and continuous operation, the Westfalia OSA purifiers incorporate self-cleaning disc type bowls designed for optimum oil/water separation even when feed densities vary widely. Entrained solids are simultaneously removed from the oil/water mixture and intermittently ejected with minimum loss of oil. OSA models are available with maximum rated capacities up to 19,000 liters/hour (4,000 gph), but actual throughput depends on the viscosity of the feed.
Westfalia take-down oil purifiers (type OTB) are designed for de-watering and removal of solid impurities from oils and emulsions containing a small proportion of solids (less than 0.1 percent). OTB purifiers are currently in use on many small service vessels in the Gulf area.
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