1200 Series Fixed Thermal Release (FTR) Cold Air Refractory Baffle Burner BPC120011 Bloom Engineering Company, Inc. APPLICATIONS • • • • • • • • • FEATURES • • • • CAPABILITIES • • • www.bloomeng.com CAUTION: The improper use of combuson equipment can result in a condion hazardous to people and property. Users are urged to comply with Naonal Safety Standards and/or Insurance Underwriters recommendaons
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1200 Series
Fixed Thermal Release (FTR) Cold Air Refractory Baffle Burner
BPC120011 Bloom Engineering Company, Inc.
APPLICATIONS
• •
• • • • • • •
FEATURES
• •
•
•
CAPABILITIES
•
•
•
www.bloomeng.com
CAUTION: The improper use of combustion equipment can result in a condition hazardous to people and property. Users are urged to
comply with National Safety Standards and/or Insurance Underwriters recommendations
2
1200 Series Bulletin
CAUTION: The improper use of combustion equipment can result in a condition hazardous to people and property. Users are urged to
comply with National Safety Standards and/or Insurance Underwriters recommendations
Bloom Engineering Company, Inc.
Figure 1 shows an approximation of combustion efficiency based on flue gas temperature and air preheat temperature (for stoichio-
metric natural gas combustion). It is clear that there are real benefits to using preheated combustion air, and Bloom’s 1200 Series
burner is a popular choice for hot air combustion. Able to operate in furnace temperatures up to 2600°F (1425°C), with air tempera-
tures up to 1200°F (650°C), this burner has seen service in countless industries, heating chambers and locations throughout the world.
This burner series is available for a variety of fuels, both liquid and gaseous including natural gas, higher hydrocarbons (such as pro-
pane or LPG), process gases such as Coke Oven Gas (COG) and Blast Furnace Gas (BFG) as well as clean and dirty producer gases. With
proper selection of oil burner (see Bloom Bulletins 1820, 1830, 1850, 1920), it is also possible to burn liquid fuels from distillate oils
through tar. Thermal capacities range from slightly less than 1.0 MMBtu/hr (0.25 Gcal/hr) to slightly more than 50 MMBtu/hr (12.5
Gcal/hr)!
One of the many benefits of this burner is that it is
possible to tailor the flame dimensions to accommo-
date a variety of combustion chambers. There are
two major divisions of this burner: long flame, and
short flame. The long flame burner requires a air
pressure as low as 3-6 “w.c. (7.5-15 mbar) while the
short flame needs 6-12 ”w.c. (15-30 mbar). Further-
more, by providing a tangential spin to the flame
pattern, it is possible to make the flames shorter and
wider for other sized combustion chambers.
Introduction and Capabilities
The key to this burner’s stability and versatility is the
carefully designed refractory baffle. The refractory
baffle consists of several air holes situated in a circle
around a central fuel nozzle (or oil burner). This ar-
rangement forms a jet discharging into the thermal
chamber. The jet, exiting at a reasonably high velocity, sets up a recirculation zone, creating a suction at the baffle face, which serves
two main purposes. First, the suction stabilizes the flame to the baffle, and second, it promotes mixing of the air and fuel for better
combustion. The degree of mixing, and thus the intensity and size/shape of the flame, is dependent on the relative velocities of the
air and fuel. Altering either or both of the velocities can change the characteristics of the flame pattern. As discussed above, the
lower air pressure (and thus velocity) slows the mixing, thus stretching the combustion envelope and giving a longer flame, while
higher pressure/velocity, provide a more vigorous mixing with shorter more compact flames.
Because this burner concept is so robust, it is possible to operate with high excess air if designed properly. In general, for lower air
pressure it is possible to design a burner for up to 2000% excess air. For higher pressures, it is safer to limit excess air to about 300-
500% maximum.
Operational Principles
Figure 1—Benefits of preheating combustion air.
3
1200 Series Bulletin
Table 1 - Performance and Selection Chart - Fast Heat Release1 (Short Flame) - 12" w.c. (30 mbar) Air Pressure*
1 Heat release tailored to suit application 2 Pilots operate at 4" w.c. (10 mbar) mixture pressure at the tip
CAUTION: The improper use of combustion equipment can result in a condition hazardous to people and property. Users are urged to
comply with National Safety Standards and/or Insurance Underwriters recommendations
Table 2 - Capacity Chart - Fast Heat Release1 (Short Flame) - 12" w.c. (30 mbar) Air Pressure*
CAUTION: The improper use of combustion equipment can result in a condition hazardous to people and property. Users are urged to
comply with National Safety Standards and/or Insurance Underwriters recommendations
Table 18 - Burner Numbering Designation 120X-YYZ
Bloom Engineering Company, Inc.
Example: 1206-125 this burner is a Gas and LP oil burner with a 1900 series oil gun and an
increased capacity 12” air connection.
X Designation Fuel Oil Burner
0 Gas Only --
1 Gas & Retractable ET Oil 1800 Series
2 Gas & Fixed ET Oil 1800 Series
3 Fixed ET Oil Only 1800 Series
4 TTA Oil Only 1850 Series
5 LP Oil Only 1900 Series
6 Gas & LP Oil 1900 Series
7 Retractable ET Only 1800 Series
8 Gas & Retractable TTA Oil 1850 Series
9 Special --
YY: Air connection dimension in inches from 04-24 (e.g. 08 = 8” diameter air connection)
Z: 0 or 5; 0-Standard capacity, 5-enhanced capacity
14
1200 Series Bulletin
Application Guidelines *
FUEL CAPABILITIES **:
• Natural Gas
• LP Gas
• Coke Oven Gas
• Blast Furnace Gas
• #2 through #6 Oil
• Low Btu/Calorific Mixed Gas
**Please Consult a Bloom Representative for availability of other fuel types
BURNER IGNITION:
• Pilot
• Direct Spark
• Manual
CONTROL:
• Volumetric Fuel/Air Ratio
• Pressure Balance Ratio Regulators
• Tandem Valves
NOTE: Because low gas pressure the burner design, it is recommended that gas distribution orifice plates are installed at each burner in multiple burner zones
Spare Parts and Replacement parts are available for virtually all industrial burners and combustion
systems supplied by Bloom Engineering in the past 50 years. Spare and replacement parts are
manufactured to original dimensions and tolerances to ensure performance is maintained. For
more information, please visit our website at www.bloomeng.com/burner-spare-parts.
SPARE OR
REPLACEMENT PARTS
FLAME MONITORING:
• UV Detector
NOTE: Please contact your Bloom Representative for flame monitoring with residual oils
OPTIONS:
• Clean-out Doors or Couplings
• Angled Mounting flange
• Burner block / tile
* NOTE: Due to continual developments in the Bloom Laboratory and results from field research, the applicability of
different fuels and other options listed above are constantly being updated. Please consult a Bloom Representative to
inquire about the availability of any guidelines/options that are not shown above.
Bloom Engineering Company, Inc.
CAUTION: The improper use of combustion equipment can result in a condition hazardous to people and property. Users are urged to
comply with National Safety Standards and/or Insurance Underwriters recommendations 10