CLSF MIN-EMISSIONS
Round Flame Combination Burner
The picture (right) is Zeeco’s CLSF Min-Emissions combination burner in operation. The reduced NOx emission from
oil firing is achieved by “Pseudo Staging” of oil by our CB oil gun design. The result is a burner that
can achieve very low NOx emissions with a great turndown. For natural draft applications, the burner is
offered with a regen tile for oil stabilization. For forced draft applications, the burner is offered with a
regen tile, cone or swirler depending upon the combustion air pressure drop available and customer requirements.
Burner Description:
The Zeeco CLSF Min-Emissions burner is an Ultra-Low NOx emissions round flame combination burner.
Burner Design Features:
- Stable flame over a wide range of conditions
- High turndown of 5:1 or greater for most gas cases
- Low maintenance cost since tip mass is small and exposed into firebox less than 1" (25 mm)
- Compact design makes this burner a great choice for retrofit applications
- Great heat flux profile
- Reasonable cost and great value
- Combustion air dampers are controlled by gears for precise control
- Bearings are used for the combustion air damper shafts for smooth, precise operation
- Configurations available: plenum mounted or individual wind-box
- Burners can operated over a wide range of fuel oils
- 310 Stainless Steel (Type HK) gas tips
Burner Design Information
| Burner Model: | CLSF Min-Emissions Burner |
| Fuels: | Combination Oil & Gas |
| Description: | Round Flame Ultra-Low Emissions |
| NOx Reduction Method: | Internal Flue Gas Recirculation by Free-Jet Mixing |
| Predicted NOx Emissions Range (Natural Draft): | 30 ppmv to 45 ppmv |
| Predicted NOx Emissions Range (600°F/316°C Air Preheat): | 50 ppmv to 80 ppmv |
| Predicted NOx Emissions Range (Natural Draft) with No. 2 oil fired: | 80 ppmv to 120 ppmv |
| Predicted NOx Emissions Range (600°F/316°C Air Preheat) with No. 2 oil fired: |
120 ppmv to 180 ppmv |
| Predicted NOx Emissions Range (Natural Draft) with No. 6 oil fired: | 160 ppmv to 220 ppmv |
| Predicted NOx Emissions Range (600°F/316°C Air Preheat) with No. 6 oil fired: |
215 ppmv to 280 ppmv |
| Combustion Air Induction: | Natural, Forced, Induced & Balanced Draft |
| Mounting Options: | Up-fired and Side-fired |
| Natural Draft Heat Release Range: | 1 MM to 20 MM Btu/hr [0.293 to 5.860 MW] |
| Forced Draft Heat Release Range: | 1 MM to 50 MM Btu/hr [0.293 to 14.65 MW] |
| Turndown: | 5:1 gas & 3:1 oil |
| Typical Excess Air Range: | 10% to 25% |