MODELS   The Steel & Alloy Low-NOX Burner System is custom-designed for each utility and industrial application.  It can be designed for installation in boilers manufactured by any major OEM.  The Low-NOX Burner System is available for firing pulverized coal, light or heavy fuel oil, or natural gas; in either single or multi-fuel configurations.  The Steel & Alloy Low-NOX Burner System has been proven to maintain/even improve performance and efficiency in a wide range of utility and industrial applications.

FEATURES Included in the assembly are the Steel & Alloy Dual Air Register and the Steel & Alloy Low-NOX Burner.  Also included in many applications is the Steel & Alloy Overfire Air System, which provides the optimum in effectiveness and flexibility (please see separate fact sheets for additional details regarding these components).

Standard equipment for many low-NOX applications includes thermocouples and air flow measurement elements.  An electric actuator for the outer air dampers is standard equipment, and a manual operator is provided for the inner register.  In addition, the Steel & Alloy design is fully compatible with existing oil or gas ignitors, warm-up guns, and flame scanners.

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APPLICATIONS   The Steel & Alloy Split-Flame Burner for pulverized coal can be utilized as a "plug-in" replacement for most wall-fired applications.  The Steel & Alloy design is presently performing in some of the largest electric utility power generation plants and small or industrial process steam applications.  The Split-Flame Burner can be utilized in any wall fired boiler and for any fossil fuel (or combination of fuels).  It is fully compatible with all popular ancillary equipment.  The Steel & Alloy Split-Flame Burner is also available in multi-fuel models, for any combinations of fossil fuels.                                                                  

FEATURES   The Steel & Alloy design includes high-alloy materials for the optimum combination of high temperature service and high erosion resistance.  All wear parts are designed for ease of replacement.  In addition, the Steel & Alloy design is fully compatible with all popular gas and oil ignitors, warm-up guns, and flame scanners.

OPTIONS   Standard equipment thermocouples can be provided with a wide range of optional instrumentation.  The temperature can be locally indicated or can be integrated into the plant's control system.

MODELS   The Steel & Alloy design is available in both dual and single register configurations.  The single air register is often specified to improve operations.  The dual air register is typically used for low-NOX retrofits, where the inner register provides controllable air to enhance staging combustion.  Mechanical reliability is a characteristic of all Steel & Alloy register designs.

FEATURES   The Steel & Alloy design (for both the single and the dual registers) features a control ring to damper linkage design that provides superior mechanical reliability and combustion control.  The ring is directly connected to each door, and acts on each door with equal force.  As a result, all damper doors move together, friction is minimized, and repeatability is considerably improved.  In addition to ease of operation and improved reliability, the Steel & Alloy air register gives boiler operators the capability to maintain proper control throughout the operating range.  

OPTIONS   The optional Steel & Alloy air flow measurement system provides additional capability for system balancing and optimization.  Air flow measurement can be integrated into the combustion control system.

Standard equipment thermocouples can be provided with a wide range of optional instrumentation.  The temperature can be locally indicated or can be integrated into the plant's control system.

APPLICATIONS   The Steel & Alloy OFA System can be installed as part of a complete low-NOX retrofit, or subsequent to a burners-only retrofit.  In use, it allows greatly improved staging of the combustion air.  As a result, NOX reductions are improved, while maintaining or improving combustion performance.  The Steel & Alloy OFA System can be provided either as part of a complete low-NOX retrofit, or as an enhancement to an existing installation.

CONFIGURATIONS   The Steel & Alloy OFA System is custom-designed for each application.  The design process considers a wide range of boiler and combustion parameters in order to achieve the optimum combination of port size, location, and duct arrangement.  The specific configuration and layout are optimized through the use of computational or physical flow modeling.

FEATURES   The Steel & Alloy design is carefully matched to each application.  Dampers are equipped with actuators which are integrated into the burner management system and the combustion control system.

OPTIONS   When matched with the optional Steel & Alloy air flow measurement system, operators are provided with the utmost in flexibility for balancing and optimizing the delivery of secondary air across a wide range of operating conditions.  The air flow measurement can be integrated into the plant combustion control system.