Case Studies · Power Generation

Biomass Boiler High Emissivity Coating: 10% More Steam on 10% Less Fuel at E.ON Mora

Walking-grate biomass CHP boiler·E.ON, Mora, Sweden

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.

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+10% steam
: −10% fuel load
: NOx −25%, CO −45%, CO2 −10%, particulate −20%

The Challenge

Slag buildup, alkali corrosion, and incomplete combustion were limiting output and driving maintenance.

What Was Applied

Emisshield on the aged castable walls, firebrick, and boiler tubes to improve whole-facility performance and reduce downtime.

Why It Worked

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.

Summary of 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

Next step

Operating the Same Asset?

Slagging or incomplete combustion on a biomass boiler? Send us the boiler data and fuel analysis. We project the result from comparable documented installations.

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