Register Burners
Sub-30 ppm NOx on Natural Gas without FGR
- Low NOx on light or heavy oils without FGR
- 1.5 - 2.5% Excess O2
- Exceptional turndowns of 10:1 on oil and 12:1 on gas
- Electrical energy savings
- Outstanding flame stability during load changes and at very high excess air levels
The XPlus Combustion System is a new standard for boiler equipment upgrades. It fully integrates the burner with "state-of-the-art" monitoring and controls. Throughout the entire development process, the burner design has included the requirement for repeatable, blaanced and optimum fuel and air flow contrl. The result is a high quality burner that achieves and maintains overall fired equipment energy efficiency and low emissions. Most importantly, boiler owners are offered a single source for engineering, manufacturing and field commissioning responsibilities that is unrivaled in the industry.

- Low Emissions Design - Gas tube injectors and atomizer sprayer plate produce stable, staged, low temperature fuel and air combustion.
- Stable Combustion - Center-fired gas, or very fine fuel oil droplets are ignited in the Stabilizing Combustion Zone. This feature produces outstanding flame stability during load changes and at very high excess air levels.
- Energy Efficient - Low electrical consumption is obtained by variable speed fan control with a Variable Speed Drive (VSD). When required, “pinpoint” injection of Flue Gas Recirculation (FGR), via the FGR Injection Plenum achieves the required NOx emissions with reduced FGR flow. Variable speed FGR Fan control is used for additional energy reduction.
- Exceptional Turndown - The combustion air plenum with “inline” characterized damper are dynamically modeled to assure exceptional turndown and balanced cross-sectional air flow.
- No Refractory Maintenance - The burner throat is a high temperature metal. Custom refractory brick installation or maintenance are not required.
- Free-Floating Design - Minimizes differential expansion imposed stresses.
- “Locked” Design - No moving parts or adjustments necessary.
- Recessed Plenum - Minimizes atomizer length and withdrawal clearance requirements.
- Atomizer Coupling Block With Disengagement Safeties - Protects operating personnel from hot oil or steam discharges.
- Integrated Primary Flow Elements - Integral combustion air, fuel gas and FGR measurements are used as the basis for combustion control. The integral FGR injection plenum allows independent measurement of Combustion Air and FGR flows.
- Minimized “Hysteresis” Induced Control Errors - A direct-coupled damper/actuator is used. Damper linkage is not required.
- Optimum Combustion Air Flow - VSD control of the FD Fan allows “trimming” of fan speed to exactly meet field conditions, thereby eliminating the need for fan oversizing, damper “short-stroking” or linkage adjustments.

BurnerMate assures sustained performance via the application of
Fully Metered Combustion Control with Oxygen Trim and variable
speed fan combustion air flow control.
- BurnerMate” Combustion Control - Fully metered combustion control strategy with Oxygen trim and variable speed fan-based combustion air flow control is used. Any deviation from the required Oxygen set point resulting from changes in fuel stoichiometry, atmospheric conditions or boiler resistance, is automatically acknowledged and corrected, maintaining the highest fuel economy possible.
- “Low-fire” Fuel Changeover - Permits fuel transfer without requiring a burner shutdown and purge.
- Enhanced Boiler Safety - Flue gas Oxygen and temperature monitoring protects against excessive flue gas temperature and incomplete combustion.

The XPlus Burner was designed with advanced computer
physics and modelling. The resulting desing produces a remarkably
fuel and energy efficient, low emissions flame
| Application | |
|
Single burner: Fuel: |
Firetube/Watertube Boilers or HTHW Generators. No. 2 through No. 6 and/or Natural Gas (consult factory for special or waste fuels) |
| Heat Input Ranges: | 15 to 100 mmBtu/hr |
| NOx Emissions | |
|
Natural Gas: No. 2 Fuel Oil: No. 6 Fuel Oil: |
as low as 30 ppmc without FGR 100 ppmc (maximum 0.01% FBN) or less without FGR 300 ppmc (maximum 0.30% FBN) or less without FGR Note: Nox performance is furnace geometry and heat release rate dependant. Lower NOx emissions are attainable with the application of FGR. CO emissions are less than 100ppmc at all firing rates (exclusive of “short-circuiting”). |
| Burner Efficiency | |
|
Any Fuel: Electrical: |
1.5 - 2.5% Excess O2, 50 - 100% Firing Rate (exclusive of “tramp” air) 80% KW Reduction, @ 40% Firing Rate |
| Operation | |
|
Turndown: Ramp Rate: Back-up Fuel: |
12:1 on gas firing; 10:1 on oil firing 200% per minute Oil or gas may serve as either the backup or supplemental fuel on simultaneous fuel firing applications |
| Supply Pressure | |
|
Natural Gas: Fuel Oils: Atomizing Media: |
2 - 5 psig (at Gas Manifold Inlet) 75 - 110 psig (No. 2 through No. 6 at Atomizer Coupling Block inlet) Nominally 20 psi higher than fuel oil pressure. Note: consult factory for available pressures outside of the ranges given. |
| Burner Control & Monitoring | |
|
Firing Rate: Oxygen Sensor: Monitoring: Controller: Instruments: |
BurnerMate Fully Metered Combustion Control with Oxygen Trim and Variable Speed Fan Combustion Air Flow Control Model “ZP” In-Situ Sensor, reliable zirconia oxide detector SCADA/Flex Remote Monitoring and Control System PCC-III Multiple Loop Controller Standard and optional equipment available |
Options
- Dual Scanners - for added security and availability
- Simultaneous Fuel Firing
- Automatic Atomizer Post Purge - to prevent post combustion discharge of fuel oil into the furnace
- GR Fan VSD control for energy savings, noise reduction and flow control