Installing And Curing Refractory Block - Eclipse Combustion Vortometric v2.00 Installation Manual

I
NSTALLING AND
CURING REFRACTORY
BLOCK
It is the customer's choice whether the combustion refractory
block is factory or field installed. The following provisions deal with
installing either choice. The standard, general purpose refractory
for Vortometric combustor blocks is Plibrico 80 Air Bond with an
80% alumina plastic ramming mix.
Factory installed refractory
The Eclipse factory installed refractory has been oven cured at
relatively low temperatures to remove most of the water content.
However, some residual water may still be present and must be
removed at the initial start-up.
After the burner and refractory have been installed, the following
steps will ensure proper curing and maximum strength to reduce
chances of cracking or spalling:
1. Set the combustion air at its minimum input.
2. Light only the pilot and leave on for approximately three hours.
3. After three hours, light the main burner at the minimum input.
4. Increase the heat input by 150°F per hour.
5. Water evaporation (steam) is usually heaviest and most
prominent around 1,000°F. If steam is still prevalent after the
hour at 1,000°F, hold at that temperature for two to three more
hours or until the steam stops.
Caution:
If at anytime during the curing process visible steam rises from
the refractory, hold the temperature until it dissipates.
6. Once steam stops coming from the refractory, assume the 150°F
temperature rise per hour until you reach 2,000°F.
7. Hold at 2,000°F for three to four hours to ensure proper curing.
Eclipse Vortometric Burner v2.00, Installation Guide 248, 4/10/07
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