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THERMBOND: Experience The Best. > Power Generation and Boilers > Thermbond in Power > Burner Throats-1300 MW Power Station- Rammed, Hand Packed
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Burner Throats-1300 MW Power Station- Rammed, Hand Packed
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APPLICATION REPORT
Burner Throats- 1300 MW Power Station
Industry: Power Generation
Description of Equipment: 650 MW Coal Fired Generating Unit
Problem: Clinker and ash buildup on the top sections of the burner quarls created an eyebrow, resulting in localized hot spots and inconsistent flame patterns. Conventional plastic refractory installed in the 68 burner quarls deteriorated to such an extent that they required full thickness replacement.
Solution: Find a refractory product that provides longer service life and minimizes downtime for installation and heat-up. Thermbond was chosen because it has little or no cure time and can withstand rapid and uncontrolled ramp-up to operating temperature without damage. Thermbond also resists thermal cycling and has proven to resist surface penetration of clinker, ash, and coke buildup.
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Burner throat ready for Thermbond
installation |
Side view of Burner Throat prepared and
ready for installation |
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Partial installation of burner throat |
Completed burner throat installation |
Product Being Replaced: Conventional Plastic Refractory
Products Applied: Thermbond Formula 15-R
Method of Installation: Hand-packing and ramming
Equipment Used: Pneumatic ramming hammers, 250 lb paddle mixer
Scope of Work: Thermbond was rammed and hand-packed to replace the plastic refractory in the burner throat areas. No form-work was required. Thermbond chemically etches to the metal surfaces, creating a chemical bond. All 68 burner throats were installed at full thickness.
Installation Date: April 2007
Follow Up: In April 2008, upon inspection a light coating of ash was found on the refractory, but this is not a criteria for replacement. In this difficult environment, conventional products sometime only last for a few weeks before the product falls off. The most critical area for refractory is in the burner throat, because it affects the efficiency of the flame. All of the Thermbond that was rammed in the throat looked excellent in the burners and had not fallen out, and that is extremely important.
To view this application report in a printable format, please click here
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Last modified at 2/4/2010 4:19 PM by Ashley Garcia
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