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Biodiesel Industry: Frequently Asked Questions

What models of Blackmer pumps are available for biodiesel applications?
Blackmer has developed multiple lines of pumps that are effective in biodiesel transfer and process flow applications, including ProVane® Motor Speed Vane Pumps, System One® Centrifugal Pumps, ML/HXL Series Sliding Vane Pumps, GX/X Series Sliding Vane Pumps, NP/SNP Series Sliding Vane Pumps and TX(S)D Series Sliding Vane Pumps.
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Why are Blackmer sliding vane pumps more energy-efficient than other pumping technologies?
The unique design of Blackmer’s sliding vane pumps offer a high level of energy savings thanks to their volumetric efficiency, consistent performance over time and high mechanical efficiency. In fact, sliding vane pumps are up to 24% more efficient than gear pumps on thin to moderately viscous fluids.
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What benefits do sliding vane pumps provide that other types of pumps don’t?
All Blackmer sliding vane pump lines are designed to conquer the most problematic challenges in the transfer of liquids of various viscosities. The unique self-adjusting vanes eliminate efficiency-robbing “slip,” helping the pump to maintain near-original volumetric output and consistency even after significant service. Other design benefits include seals and bearings designed for maximum life; a wide range of flow capacities; superior priming and suction capabilities that make them ideal for line stripping, complete evacuation of heels and superior lift; and easy maintenance that allows vanes to be replaced without removing the pump from the piping system. In addition, their exceptional suction/lift capabilities make sliding vane pumps ideal for top unloading of vessels.
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What materials of construction do the pumps come in?
ProVane® Motor Speed Vane Pumps are available in ductile iron and stainless steel; System One® Centrifugal Pumps are available in ductile iron, stainless steel, alloy 20 and hastalloys; ML/HXL Series pumps are available in ductile iron; GX/X Series pumps are available in cast iron and ductile iron; NP/SNP sliding vane pumps are available in cast iron and stainless steel; and TX(S)D Series pumps are available in cast iron.
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Which Blackmer pumps are best for the transesterification process? Transesterification is at the heart of the biodiesel production process and for this critical stage, Blackmer’s GX/X and ML/HXL Series sliding vane pumps, and ProVane® Motor Speed Vane Pumps fill the bill due to their self-priming and high-suction capabilities, and volumetric consistency designed to ensure batch quality compliance.
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What types of Blackmer pumps would be recommended for blending at the terminal?
Their excellent volumetric efficiencies make Blackmer’s GX, ML/HXL, Provane® Motor Speed and TX(S)D Series sliding vane pumps ideal for blending operations.
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Which Blackmer pumps handle alcohol recovery?
Blackmer XL Series sliding vane pumps and ProVane® Motor Speed Vane Pumps are ideal for alcohol recovery. Their ability to perform under a vacuum and against high suction, as well as their ability to be maintained very quickly without being taken out of service makes them the standard for use in one of the most difficult aspects of biodiesel production.
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Which Blackmer pumps perform best in caustic transfer?
Due to their stainless-steel construction, metallized carbon sleeve bearings and non-metallic vanes, Blackmer SNP Series sliding vane pumps work best in handling caustic fluids. They also have a non-galling feature that reduces maintenance costs and operational difficulties. The Blackmer ProVane® Motor Speed Vane Pump and System One® Centrifugal pumps are also preferred for these difficult applications.
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Which Blackmer pumps handle glycerin?
Many Blackmer pumps, including the sliding vane, C-Series eccentric disc and System One® centrifugal pumps are suitable for glycerin applications. Please consult your local representative or Blackmer applications engineer with the requirements of your specific application.
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Does Blackmer offer small energy-efficient pumps?
Blackmer’s highly efficient ProVane® Motor Speed Pump Series has been designed with four port sizes ranging from 3/4 to 2 inches and flow rates from 2 to 100 GPM.
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What smaller footprint pumps do you have for applications where space is limited?
The small footprint of the ProVane® Motor Speed Pump Series make it ideal for limited-space applications.
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Are the elastomers and mechanical seals on Blackmer pumps compatible with biodiesel?
Blackmer pumps have been configured with elastomers and mechanical seals, compatible with the handling of biodiesel. Blackmer worked closely with leading elastomer suppliers to develop specialized materials to handle fluids with high alcohol content while also being chemically and mechanically compatible with other fluids commonly found within biodiesel production plants.
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Does Blackmer make seal-less pumps?
Blackmer makes several series of seal-less pumps, including SMVP, C-Series and Abaque peristaltic (hose) pumps.
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