Gas Jet Compressors

These devices are particularly suitable where no steam is available or where compressed air or gas as motive medium offer advantages over steam. They operate on the same principle as other ejectors.

Advantages
  • Comparatively low initial cost
  • Little maintenance needed
  • No moving parts
  • Simple in construction
  • Wide range of materials such as steal; stainless steel; cast iron; bronze; Teflon and graphite
Applications

Gas jet compressors have extensive applications in natural gas industry. These include

  • By means of natural gas under pressure (e.g. well pressure), they suck gas from underground reservoirs and compress the mixture to pipeline pressure.
  • Mixing two different types of natural gas with different heating value in proportion to obtain a constant specific heating value for gas network.
  • In peak conditions in gas networks when there is natural gas shortage, Gas jet compressors utilizing evaporated liquefied gas (propane, butane, etc) serve to suck air from atmosphere and produce a mixture with similar characteristics to those of natural gas.
  • In natural gas exploitation sites gas jet compressors motivated by the pressure side of turbo-compressors handling natural gas, suck the gas in their spiral housing at a pressure of 3 bar, and compress it to 16 bar, to prevent its leakage from shaft seal points crossing the housing.
  • Propelling the gas stored in gas tanks at huge flow rates of thousands of cubic meters per hour
  • Compressing the residual gases to atmospheric pressure during natural gas processing

Other application are

  • Paper industry
  • Petroleum production
  • Power generation
  • Process industry
  • Sucking and mixing natural gas with exhaust gas, air or other gases and conveying the mixture to the combustion chamber
  • Sucking in and mixing atmospheric refinery heating gases with process gases (exploitation of flare exhaust gases)
Materials
  • Cast iron
  • Cast stainless steel
  • Other materials on request
  • Steel or stainless steel
  • Temperature change resistant porcelain
Installation Requirements

    In the case of gas jet compressors, to avoid reflux from pressure pipe into the gas tank, a non-return valve is needed on the suction pipe.

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