Hydrogen Burner

Our Hydrogen burner, developed by Preferred’s Special Combustion division provides the sustainable, safe reclamation of waste hydrogen with high efficiency and carbon foot print reduction. Chemical plant applications and the like are able to use of their green, blue, gray, or white hydrogen which significantly reduced their use of fossil fuel for their process steam requirements.

Preferred’s Special Combustion division handles controls, burner, boiler, fuel handling, blending, and a balance of plant integrated combustion package. Specializing in these applications gives plant managers the confidence that their burner will light when they need it to, no matter the fuel blend they are achieving for combustion.

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Many end-users are considering switching to hydrogen firing for their steam generation needs; therefore, it is essential to highlight some of the challenges they would be facing when planning to make the fuel conversion or addition. Most end-users have their boiler/burners plant systems suited for natural gas firing; if we compare the natural gas and hydrogen combustion characteristics, the hydrogen flame speed is significantly faster (~9 times) than natural gas. This requires the burner and gas nozzles to be designed for the new fuel velocity. Hydrogen has a higher stoichiometric adiabatic flame temperature (~450 F degrees higher) than natural gas, making necessary the upgrade of internal burner components to higher grade steel or alloys suited for the elevated temperatures.

Emissions play another factor in firing of hydrogen, as hydrogen burns “hotter” than natural gas and has a faster combustion rate than natural gas; hydrogen is prone to thermal NOx generation. Considering few techniques to lower the NOx, such as flue gas recirculation (FGR), steam injection, and Ultra-low NOx burners can effectively reduce the emissions to the required levels.

Our Preferred Special Combustion Engineering (PSCE) division has considered all the above. It has developed and installed our Hydrogen burner systems on multiple sites successfully, keeping the end-user boiler systems operating safely and environmentally soundly.  Special consideration is given to both the upstream and downstream processes to ensure a total functional system.  Our experience brings these important considerations into the discussion with our end users so we can develop the site specific solutions necessary for a hardened system.

Our combustion expertise in alternate and green fuel applications comes with a commitment to reliable combustion, so the plant maintains operational uptime, and maximizes the consumption of these great fuel alternates.

Our Preferred Special Combustion Engineering (PSCE) division has considered all the above. It has developed and installed our Hydrogen burner system on multiple sites successfully, keeping the end-user boiler systems operating safely and environmentally sound.

Our expertise in coal to natural gas conversions and other alternate “free fuel” applications comes with a commitment to reliable blending of alternate and traditional fuels and reliable combustion, so the plant is operational, and experiences limited down time.


FUEL — Hydrogen, Natural Gas, LPG

NOx EMISSIONS — Consult Application Engineering

BURNER EFFICIENCY — 3% Excess Oxygen Levels Available

TURNDOWN — 10:1 Contingent on available fuel pressures

SIZING —  A Full Range of Burner Heat Input Available, Consult Application Engineering with your project details

BURNER CONTROL & MONITORING — PLC Based Burner Management System with, Multiloop Controller or PLC Based Combustion Control System.


Any facility or plant that creates hydrogen as a byproduct of their process. Recyling the hydrogen byproduct through a gas blending process with natural gas allows facilites to lower NOx emissions, reuse hydrogen that would otherwise go to waste, and efficiently power their plant process.

Another application would be a facility that is bringing in green hydrogen (hydrogen not made as a byproduct but made by electrolysis for the purpose of combustion and power creation).

This would also require gas blending technology and expertise to create steady and efficient combustion. 

Single Burner
Auxiliary Burner
Utility Burner

Thermal Oxidizers
Air Heaters
Coal to Gas Conversions


The Preferred Hydrogen Burner Brochure