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Flare Systems

Now recognised as a world leader, the Sonajet® design was first developed and patented by UnitBirwelco in the 1970’s to meet the requirements for low radiation flaring on North Sea installations.

The Sonajet® combines the advantages of high pressure sonic flaring with long life to provide guaranteed ignition under all conditions.

The Sonajet® design solution eradicates the need for annual tip change-outs and associated downtime costs – all of which makes it the most effective solution on the market. In addition, its design is extremely flexible and can be tailored to meet virtually any requirement. 


The Sonajet® Principle


A proportion of the high pressure gas is throttled and expanded to produce a low velocity gas stream, which produces a stable flame. The low pressure flame ensures a continuous ignition source for the remaining high pressure gas exiting the tip, even under maximum flow and blow-down conditions. As a result, flame lift and blow out are avoided.


System Benefits


  • Total reliability with flare Ignition systems
  • Proven, safe pilot monitoring in all atmospheres
  • Reliable, sturdy support structures, stacks or derricks
  • Seals, vessels and anti-diffusion barriers for peace of mind
  • Back-up skids and control systems to ensure operation
  • Total spares support – a simple call away

 “The Sonajet® design solution eradicates the need for annual tip change-outs and associated downtime costs – all of which makes it the most effective solution on the market. 


 Unit Birwelco Products


  • Heat transfer equipment
  • Hydrocrackers
  • Steam reformers
  • Pyrolysis furnaces
  • Visbreaker heaters
  • Waste heat boilers
  • Atmospheric crude heaters
  • Combustion air preheat systems
  • Vacuum heaters
  • Flare systems
  • Delayed cokers
  • Air-cooled exchangers
  • Catalytic reformers
  • Vacuum steam condensers

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Alternatively, for direct Flare Systems support, contact-

Carl Blewer

Tel: +44 (0)121 585 5566 

c.blewer@unitbirwelco.com

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Flare Systems 2 (pdf)

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