Case Study · Power Generation
Biomass Boiler High Emissivity Coating: 10% More Steam on 10% Less Fuel at E.ON Mora
| Industry | Power Generation |
|---|---|
| Asset | Walking-grate biomass CHP boiler |
| Customer or location | E.ON, Mora, Sweden |
| Products used | Emisshield on castable walls, firebrick, and boiler tubes |
| Headline metric | +10% steam |
| Secondary metric | −10% fuel load |
| Also measured | NOx −25%, CO −45%, CO2 −10%, particulate −20% |
E.ON's biomass combined heat and power plant in Mora, Sweden had slag buildup, alkali corrosion, and unbalanced, incomplete combustion in its walking-grate boiler. Coating the aged castable walls, firebrick, and boiler tubes with an Emisshield system raised steam output 10% on a 10% lower fuel load, cut combustion air from 5.0% to 0.5%, reduced NOx 25%, CO 45%, CO2 10%, and particulate 20%, and eliminated soot and slagging.
01
What was the challenge?
Slag buildup, alkali corrosion, and incomplete combustion were limiting output and driving maintenance.
02
What was applied?
Emisshield on the aged castable walls, firebrick, and boiler tubes to improve whole-facility performance and reduce downtime.
03
What were the results?
| Metric | Before | After |
|---|---|---|
| Steam output | Baseline | +10% |
| Fuel load | Baseline | −10% |
| Combustion air | 5.0% | 0.5% |
| NOx | Baseline | −25% |
| CO | Baseline | −45% |
| CO2 | Baseline | −10% |
| Particulate | Baseline | −20% |
| Flyash, soot, slagging | Significant | Flyash reduced; soot and slagging eliminated |
| Fuel flexibility | Able to switch to a less expensive fuel |
04
Why did it work?
More uniform radiant flux across the coated furnace completes combustion with less excess air, which lifts steam per unit of fuel and removes the conditions that form slag and soot. See Production Increase, combustion.
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