Swirl burners
Swirl burners have been developed for the efficient, low-emission utilization of waste gases with low calorific values, particularly where volumetric combustion technology is not feasible.
A key advantage of these burners is their versatility and flexibility: they can be fired on a single gas type or on various gases—including waste gases, natural gas, or LPG. Moreover, the burners can be supplied in a gas-and-oil (dual-fuel) version, significantly extending their applicability under diverse operating conditions.
The burners feature automatic modulation of firing rate and air flow, controlled by continuous measurement of oxygen concentration in the flue gases. This ensures optimal combustion parameters and high thermal efficiency while minimizing harmful emissions and meeting current regulatory and environmental standards. There is also the option to preheat the combustion air, which can substantially improve the system’s thermal efficiency by reducing stack losses (i.e., lowering the temperature of flue gases exiting the boiler).
Swirl burners integrate effectively with various boiler designs—both fire-tube and water-tube—providing reliable operation and high overall efficiency, making them an ideal solution for a wide range of industrial and power-generation applications.
These forced-draft burners operate with an external fan that is not an integral part of the burner assembly. This design increases their operational independence, simplifies maintenance, and minimizes operating costs when process air is available.
Visualization of a 15 MW gas-oil burner
Burner parameters:
- Fuel capacity: from 1 to over ten megawatts;
- Continuous modulation of output from 20 % to 100 % capacity;
- Supply pressure for all media (gas, oil and oxidizer): adapted to available pressures;
- Emissions of harmful compounds (nitrogen oxides, carbon monoxide and particulates): in accordance with applicable standards, directives, regulations and other legal acts;
- Forced-draft burner (independent fan not forming part of the burner assembly);
- Capability for operation with flue-gas recirculation.
NOTE: As each burner is custom-designed, all parameters will be tailored to the customer’s specific needs and requirements.
Burner equipment:
- Flame monitoring: UV probe;
- Shut-off valve tightness monitoring (where required);
- Pilot burner – depending on the configuration, the unit may include two independent pilot burners, which can be fueled with an auxiliary fuel such as LPG.
View of a hot-water boiler with an integrated 15 MW gas-oil burner. The burner is fueled by mine gas.
The special design of swirl burners ensures stable and efficient combustion, minimizing the emission of harmful substances into the environment, even when burning difficult-to-combust gases.
The offered swirl burners represent a solution that combines efficiency, reliability, flexibility, and environmental stewardship.
Detailed information about Swirl Burner Technology can be found in the “Swirl Burner Technology” tab.
