Low NOx Burners MPJE are equipped with one air register suitable for any kind of liquid and/or gaseous fuel with the possibility to fire one ore more fuels at the same time. These are our classic burners and we have a large number of references around the world.
They are provided with a series of gas lances made from stainless steel which can be adjusted during the operation. These lances injected the whole or larger part of fuel gas with the possibility to install a central gas lance which injected the remainder part. This solution ensure a better flame stability.
Combustion air reaches burner throat thank to air register which can be manual or automatic.
When is requested a mixed gas/oil applications, a liquid atomizer replaces the central gas gun.
Air vorticity is generated and guaranteed by the vanes which formed the air register. The position of such vanes is set during the start – up phases and is important to control the flame intensity and shape which are different from one combustion chamber to another or from one fuel to another.
Fuel gas is distributed through an external plenum and a series on gas lances each of which is provided with a skew faced “multi jets” nozzle which can be adjusted and rotated to optimise gas distribution without halting burner operation.
Low NOx Burners MPJE are designed to meet classic emissions requirements and reach the compromise between cost and performance while providing high combustion efficiency and extreme versatility.
Typical applications of these type burners includes forced or balanced draft boilers as well as any kind of refinery or industrial furnace, thermal oxidizers and process heaters.

Low NOx Burners MPJE Brochure


  • Highly customisable: each burner is designed to meet Client's specific requirements
  • Reliable and efficient as demonstrated by a large number of installations worldwide
  • Single air register to control the vorticity and distribution of combustion air inside the burner (manual or automatic)
  • Fuel gas distributed through a plenum with adjustable nozzles and a central gas lance or liquid fuel atomizer
  • Capable of burning one or more fuels at the same time
  • Can be operated either with ambient temperature or pre – heated combustion air
  • Can be operated with flue gas recirculation for emissions reduction
  • High flame stability over a wide turndown range


Firing rate up to 60 MW
Flame dimensions(*) adjustable
Materials carbon steel
stainless steel
Combustion air up to 550 °C
Turndown 6:1
Pressure drop 150 – 200 mm wg

(*) Flame dimensions vary with firing rate


Natural gas firing

NOx 200 mg/Nm3
CO 30 mg/Nm3

Heavy fuel oil firing (N content 0,2 % by weight)

NOx 450 mg/Nm3
CO 100 mg/Nm3
Particulate 50 mg/Nm3

(*) ref. to 3% O2 dry flues, combustion air @ ambient temperature without FGR; the emissions could be different depending of application and must be evaluate Job by Job


Flame Lenght


  • Burner complete with single air register and fuel equipment (central gas lance / liquid fuel atomizer, fuel gas distributor and stainless steel nozzles)
  • Refractory throat (set of preformed refractory bricks made from 42 - 44% Al2O3)
  • Air wind box (alternatively we can provide the lay - out drawings for manufacturing by Client)
  • Combustion air isolating and balancing dampers (multi - burners application)
  • Pilot igniter (High energy, high tension, premixed or non-premixed type with ionization rod)
  • Flame detection system
  • Burner management system (BMS)
  • Piping and instrumentations trains



1 steam boiler, 2 burners 22,8 MW each
3 steam boilers, 2 burners each boiler, 28 MW each burner
EDISON - Terni (Italy)
1 steam boiler, 2 burners 29 MW each
TermoMeccanica Ecologica - S. Vittore del Lazio (Italy)
2 steam boilers, 2 burners each boiler, 21,7 MW each burner
STC - Villorba (Italy)
1 steam boiler, 2 burners 35 MW each burner
NEOTERM - Colari Malagrotta, Roma (Italy)
1 steam boiler, 1 burner 46 MW