Case Study · Power Generation
HRSG High Emissivity Coating: 22% Faster to Operating Temperature at a Combined-Cycle Plant
| Industry | Power Generation |
|---|---|
| Asset | Horizontal heat recovery steam generator |
| Customer or location | Gas turbine combined-cycle plant |
| Products used | Emisshield on duct burner zone and transition sections |
| Headline metric | 22% faster to operating temperature |
| Secondary metric | Particulate −20% |
| Also measured | Longer refractory and steel life |
A gas turbine facility's HRSG faced radiant losses and uneven gas flow through its transition sections. Emisshield was applied to the duct burner zone and transition sections to improve radiant capture and temperature uniformity. The unit reached operating temperature 22% faster, particulate fell 20%, dusting dropped, and refractory and steel sub-components lasted longer.
01
What was the challenge?
Radiant losses and uneven gas flow in the transition sections were slowing heat-up and wearing components.
02
What was applied?
Emisshield on the duct burner zone and transition sections of the horizontal HRSG, with boiler tube performance evaluated in a static test.
03
What were the results?
| Metric | Before | After |
|---|---|---|
| Time to operating temperature | Baseline | −22% |
| Particulate | Baseline | −20% |
| Dusting | Present | Reduced |
| Refractory and steel sub-component life | Baseline | Increased |
04
Why did it work?
Coated duct-burner refractory re-radiates energy into the gas path and tube banks instead of storing it in the lining, so the unit heats faster and more evenly. See Production Increase, heat-up.
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