Screw Dry Pump
– No Contamination of Process Stream
– Deeper Vacuum
– More Flexible Operation
– No Effluent
– No Pollution
– No Waste Disposal Costs
– Lower Maintenance Costs
– Immediate Solvent Recovery at Pump Exhaust
– Lower Utility Costs-Lower
– Total Cost of Ownership
Liquid Ring
– Seal Fluid Supply
– Effluent Disposal
– Potential Cavitations
– High Maintenance & Servicing Cost
– Vapor Pressure Limiting Vacuum
– Non Recoverable Condensate
– Low Capital Cost
– Traditional Equipment
– Good Liquid/Solid Handling
Rotary Vane Pump
– Seal Fluid Supply
– Non Aqueous Effluent Disposal
– High Maintenance & Servicing Cost
– Non Recoverable Condensate
– Vanes Prone to Chemical Attack
– Intensive Operator Involvement
– Lower Capital Cost
– Traditional Equipment
– Improved Vacuum Levels
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