Power Generation and Boilers

Industry: Coal Fired Power Plant

 

Description of Equipment: Coal fired power plant burner face

Problem: The maintenance manager and mechanical supervisor at the power plant needed to repair the refractory in burner throats to improve burner performance. Their desire was to repair the existing refractory rather than take the time to tear out and replace it in its entirety. Conventional refractory could not be dried out effectively and there was concern about conventional refractory bonding to the existing refractory.

 

Solution:  Install Thermbond Formula 15-R, which requires no curing or lengthy dry out. This formula eliminates the thermal dry out restrictions for the start up of the furnace. 

 

Product Being Replaced: Conventional 85% alumina plastic refractory

 

Benefit Using Thermbond: Thermbond ramming materials bond to existing refractories and require little or no dry-out. These two features address the customer’s initial concerns plus, because dry-out is minimized, down time is also reduced.

 

The maintenance manager and mechanical supervisor were so impressed with the ease of installation for Thermbond, they expanded the scope of work. The additional scope of work was done within the original shutdown schedule.

 

Products Applied: Thermbond Formula 15-R, a 60% alumina ramming material.

 

Scope of Work: Thermbond Formula 15-R was mixed in a Holbart mixer and then rammed around the outside of 42 burner throats, feathered out to five inches thick.

Equipment Used: A 30-quart Hobart mixer and Ingersol-Rand pneumatic bench rammers

 

Installation Date: February 2009

 

Follow Up: Inspection scheduled during outage in November