Vapor Compression Desalination for the Oil and Gas Industry


Vapor Compression for Desalination

In 1939, MECO patented the vapor compression process for the desalination of saltwater. Since then, we’ve refined and improved the technology to deliver high-quality potable drinking water and distilled water in some of the world’s harshest environments. With MECO, you get a completely packaged unit that features the surface preparation and coatings suitable for the marine environment. Plus, the units require minimum field installation. And since MECO has installations worldwide, you have access to a global service network that can respond quickly to emergencies and service maintenance needs.


Technical Data
PEE300M3C7,200 [27]
PEE400M3C9,600 [36]
PEE600M3C14,400 [55]
PEE800M3C18,500 [70]
PEE1250M3C30,000 [114]
PEE2100M3C50,000 [189]

Notes: Capacities are based on seawater with a TDS of 35,000 ppm at 77°F (25°C). MECO M3C units typically operate based on a concentration ratio of 1.77.

  • Leading manufacturer of vapor compression desalination plants
  • Produces potable drinking water and high-quality distilled water
  • Completely packaged units for minimum field installation
  • Rugged oilfield skids with surface preparation and coatings suitable for marine environment
  • Hazardous area classification options
  • Superior energy efficiency
  • Offers the largest vapor compression still available — capacity of 15,000 gallons per hour
  • All components manufactured by MECO
  • Spare parts also available
  • Supported by MECO 24-hour customer service
  • Backed by warranty
Standard Features
  • Vertical natural circulation evaporator
    • Feedwater quality tolerance
    • Scale effects reduced
    • No pumps or spray nozzles
  • Straight annealed tubes in evaporator
    • Individual tubes can be replaced as opposed to replacing the entire tube bundle
    • No residual stresses or surface finish problems commonly found with U-tubes
  • Deaeration of feedwater
    • Non-condensibles removed prior to distillation
    • Corrosion reduction
  • Corrosion resistant materials
    • 90/10 copper nickel
    • Titanium
    • Inconel
    • Monel
Equipment Details

Design Details

  • Galvanized rigid steel conduit
  • Stainless steel airlines
  • Integrated control and instrument panel
  • TEFC motors
  • Blowdown: Bronze pumps with Monel shafts
  • Distillate: 316 SST pumps with 316 SST shafts

MECO Vapor Compressor

  • Manufactured by MECO
  • Immediate spare parts availability
  • Exchange program
  • Inconel impeller and Monel-process contact components
  • New Lube Lock Sealing System
  • Directly mounted with no vapor ductwork
  • Space friendly
  • Smaller footprint
  • Easy access for maintenance

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