APPLICATION REPORT
Coal Fired Power Boiler- Gunned & Slobber Nozzled
Industry: Power Generation
Equipment/Location: Coal fired burners and OFA’s- Peoria, Illinois
Problem: New Low Nox burner technology being retrofitted into existing burners. Much of the old refractory needed to be replaced and OFA’s boxes needed to be installed. Conventional refractory could not be dried out effectively without a very costly forced air dry-out company and the addition of several more days on to an already tight schedule.
Solutions Using Thermbond: Time/Cost Savings- Gunning and slobber nozzleing the Thermbond products provided an extremely fast and easy installation. Because Thermbond chemically bonds to existing refractory and requires no curing or lengthy dry out the plant was able to bring the boiler back up saving gas consumption and extra outage days.
Performance- Our unique binder system allows for much faster start up rates than any alternative refractory without effecting material properties and long term performance. Thermbond will not be adversely affected by an uncontrolled start up.
Eyebrows- The integrity of the burner flame is critical in maintaining Low Nox burner performance. Thermbond’s binder system is naturally non-wetting and minimizes the buildup of slags and coking in this area which is an important aspect of long term efficiency.
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Burner wall with most of the old refractory removed. |
Gunned material around burner throat with top hat form in place. |
Finished burner throat. |
Product Being Replaced: Conventional refractory
Products Applied: Formula 6-AG and Formula 9-L
Method of Installation: Gunning and Slobber nozzle
Equipment Used: Reed LOVA machine, Mortar box, Horizontal mixer, Stellar gunning nozzle, Curry comb, 2- 375 air compressors
Scope of Work: Most of the existing old refractory needed to be removed for this retrofit. Thermbond Formula 6-AG was gunned in and around the burner throats and Formula 9-L was slobber nozzled into the OFA boxes. All the work was completed on time and the boiler was back in operation without any problems. The customer was very pleased with the installation and material selection.
Installation Date: 11-04-2008