
Burners
Advanced combustion technology for demanding industrial applications
Stork Burners, a Bilfinger brand, represent proven combustion technology designed for industrial environments where fuel flexibility, ultra-low emissions and operational reliability are critical.
Based on more than a century of experience in burner and boiler technology, our Combustion Technology delivers engineered solutions for direct firing and supplementary firing (HRSG) applications across the Power, Refinery, Petrochemical and Process industries.

Combustions Challenges that We Solve
Modern combustions systems must perform under increasingly complex conditions:
- Multiple and changing fuel compositions
- Integration of hydrogen and renewable fuels
- Tightening NOₓ, CO and emission regulations
- High efficiency demands across wide load ranges
- Safe and stable operation under dynamic process conditions
Stork burners are designed to meet these challenges through robust combustion concepts, validated by CFD analysis, combustion testing and field experience.
Burner Technology
Direct Fired Burners
Bilfinger provides direct fired burners for a wide range of combustions installations, including:
- Steam boilers and hot water boilers
- Fired heaters and furnaces
- Superheaters and incinerators
More information about Bilfinger Boiler solutions
These burners enable clean and stable combustion of gaseous and liquids, including waste and off-gas streams.
Key concepts include, but are not limited to:
- Stork Impulse Ultra Low NOₓ burners (gas and oil firing)
- Double Register Burners (DRB) for extreme fuel flexibility
Typical firing capacities range from 5 to 100 MW per burner, depending on burner type and configuration.
Supplementary Firing (HRSG)
For gas turbine exhaust and HRSG applications, Bilfinger offers dedicated supplementary firing systems, designed for High turndown, Stable ignition and Seamless mode transitions.
Stork HRSG Burner solutions include:
- Inline grid burners
- Circular duct burners for gas and oil firing
- Operation in turbine exhaust gas (TEG), fresh air or combined modes
- Flying takeover between operating conditions

Ultra-low Emissions by Design
Low emissions are not an add-on; they are part of our burner design philosophy.
These combustion systems can be combined with proven NOₓ reduction techniques, such as:
- Flue gas recirculation
- Air staging and fuel staging
- Water or steam injection
- Patented after-air-ports concepts
Where Bilfinger’s solutions integrate with post-combustion systems, such as SCR and SNCR.
Hydrogen & Renewable Fuels
Bilfinger has decades of experience in industrial combustion applications involving; hydrogen and alternative fuels, long before these became mainstream topics.
Stork burners support:
- Low-pressure and high-pressure hydrogen firing;
- Blended and diluted hydrogen fuels;
- Oxygen-enriched and full oxygen combustion;
- Renewable fuels such as biogas, pyrolysis oil and bio-based liquid fuels.
This makes the burners a reliable foundation for future-proof energy and decarbonization strategies.

Burner Retrofits & Modernization
Burner retrofit projects are engineered to extend asset lifetime while improving performance and compliance. The scope ranges from:
- Burner replacement or upgrade
- Conversion between fuel types
- Addition of secondary emission reduction measures
- Integration of new control and safety systems
Each retrofit is based on a thorough technical assessment, supported by CFD studies, burner demonstrations and validation testing to ensure predictable performance.
Engineering, Manufacturing & Lifecycle Support
All Stork burners are engineered, manufactured and can be serviced by Bilfinger, the OEM of the Stork brand.
Lifecycle services include:
- Combustion analysis and consultancy
- CFD and performance studies
- Basic and detail engineering
- Manufacturing and installation
- Commissioning and emission measurements
- Inspection, maintenance and overhaul
- Long-term service agreements (LTSA)
- Spare parts, such as impellers, igniters, sightglasses, gasspuds, atomizers, oilguns and flexhoses.
Proven technology, Worldwide
The Stork Burners are worldwide in operation. They can be found in:
- Cogeneration plants;
- Refineries and petrochemical facilities;
- Renewable fuel installations;
- Industrial steam and heat generation systems.
Why Engineers Choose Stork Burners
- Engineered combustion solutions, not a standard product;
- Proven ultra-low-NOₓ performance;
- Extreme fuel flexibility;
- Strong integration with boilers, HRSGs and fired equipment.



