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NAO Airocool™ and Hydrocool™ Burners are unique
inspirating type burners
that fire a wide range of gaseous fuels and waste
vapors. These burners have
special nozzles to produce either narrow
(pencil type) or wide flames.
The burners are available in sizes from 1/2",
1", 1 1/4", 2" to 8"
diameter with firing rates of
50,000 to 8 MM Btu/Hr. The burner venturi is
highly effective in inspirating air, producing a
cool low NOx flame. The burners operate
with very low excess air and provide well defined
and stable flames. These burners have been in service for over 80 years and are very reliable
and easy to
operate. These burners are very heavy duty and will operate many years
(many units
in service for over 30 years) without repairs or
replacement parts.
For example, in
Ecuador, a refinery had Airocool™ Burners in service for over 30 years
and
then were "sold" some new high efficiency low NOx Brand "X"
burners. The Brand "X"
burners
were put into service and
performed poorly -- the Brand "X" were sold as low NOx
type but
their NOx levels were actually much higher (nearly 2x) that the old premixed Airocool™ Burners.
After 2 years of trouble, replacing tips every few months and plugging of the
very small burner
orifices, the refinery people contacted NAO to get new
Airocool™ Burners to replace the
Brand "X" burners. Since the Airocool™ Burners were reinstalled the refinery has operated
trouble free for
almost 11 years and the operators are happy again.
Airocool burners come in many configurations:
Angled for Side Wall Firing Downfired for Reformers
NAO has make recent updates to the Airocool™ Burners which
allows improved performance
with lower NOx levels. Here is one example of an updated Airocool™ Burner
that was replaced
after nearly 65 years service in the United Kingdom.
Click here for PDF.
The Airocool™ Burners are available in single, dual (see
below for dual -- RAMS HORN DESIGN)
and 4 headed configurations for straight and
angle firing.
Hydrocool™ Burners are used when the plant or waste gas
contains high percentages of
hydrogen (very fast burning gas). The Hydrocool™ Burners use a special venturi insert
in the burner nozzle to
accelerate the gas at its exit thus reducing flashback of the fast
burning
hydrogen gas.
The Airocool™ burners can also be equipped with central
mounted oil atomizer (oil gun)
to
fire oil (#2 or even heavy oils, i.e., bunker C) as a backup fuel.
The Airocool™ Burners can also be supplied with primary
eductors for low pressure vapors
or waste gases. The eductor will pull the
waste vapor or gas into the burner. They produce a
vacuum of approximately
6" (150 mm) WC and are driven by compressed air, steam or fuel gas.
Contact Jackie Mishinski at NAO
Ext. 213 for Assistance
Email ......
sales@nao.com
Phone ......
215-743-5300
800-523-3495 (All USA & Canada)
Fax ....... 215-743-3020