Case Study · Power Generation
Mass-Burn Boiler High Emissivity Coating: Maintenance Cycle Extended from Quarterly to Semi-Annual
| Industry | Power Generation (waste-to-energy) |
|---|---|
| Asset | Sloped-grate mass-burn boiler |
| Customer or location | Waste-to-energy facility |
| Products used | Emisshield on wall refractories and throat arch |
| Headline metric | Maintenance quarterly to semi-annual |
| Secondary metric | Slag adhesion significantly reduced |
A mass-burn waste-to-energy facility had slag buildup, incomplete combustion, hot spots, and thermal shock in its combustion chamber. Emisshield on the wall refractories and throat arch improved heat recovery and solid-waste combustion, reduced hot spots and slag adhesion, extended refractory life, and moved the maintenance cycle from quarterly to semi-annual.
01
What was the challenge?
Slag, hot spots, and thermal shock were consuming refractory and limiting throughput.
02
What was applied?
Emisshield on the wall refractories and throat arch of the sloped-grate boiler.
03
What were the results?
| Metric | Before | After |
|---|---|---|
| Heat recovery | Baseline | Improved |
| Combustion of solid waste | Incomplete | Improved |
| Hot spots | Present | Reduced |
| Slag adhesion | Significant | Significantly reduced |
| Maintenance cycle | Quarterly | Semi-annual |
| Throughput | Baseline | Improved |
04
Why did it work?
A high emissivity chamber spreads radiant energy across the grate and walls, which completes combustion, removes the concentrations that create hot spots, and presents a surface slag does not wet. See Production Increase, run length.
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