Enclosed Flares


Enclosed Flares are also called Enclosed Ground Flares, Populated Area Combustors or Thermal Oxidizer Flares. This design offers many advantages in comparison to open, elevated flares.

NAO’s Enclosed Ground Flares destroy hydrocarbons, volatile organic compounds (VOCs), odors and other objectionable waste streams. NAO’s Enclosed Flares are in use throughout the world in refineries, chemical/petrochemical facilities, gas pipelines, tank farms, and dockside/inland loading terminals (located in populated urban areas). These systems are also employed for ship-mounted thermal incineration of hydrocarbon and other combustible vapors on the high seas. NAO recommends our Enclosed Flares for residential areas.

Some of the main advantages of Enclosed Flares are:

  • No smoke
  • No steam
  • No thermal radiation
  • Less land area
  • No visible flame
  • No odor / low noise
  • Proven performance
  • Ease of operation
  • Simple and reliable
  • Low maintenance

Other advantages include: Very low noise; very low and controlled emissions; no thermal plume; very simple and fully accessible controls; convenient service of all components at grade level (for example, pilots can be removed without shutting down a unit); no thermal radiation (heat shield) problems; and ultra-safe, ultra-dependable destruction of liquid and gaseous wastes.

As with all flares, safety and reliability must be the two most important considerations. Safe and reliable operations of all flare systems depends primarily upon the design and performance of the flare burners and the reliability of fully automatic, fail-safe interlocked sensors, pilots and controls.

With over 100 years of experience NAO has earned a worldwide reputation for reliability and trouble-free performance.