Fire All Dual Fuel Burner 2514
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2514 Fire All Heavy Oil Burners are rugged, maintenance free, intact burners for burning light or heavy oil on a wide applications. Capable of efficient operation throughout a wide temperature range, they are equally at home on low temperature ovens and high temperatures forge and melt furnaces. Sealed mountings help maintain furnace pressure, controlled atmosphere, and closer fuel/air ratio control — all contributing to better product quality. Fire All Burners have been used for years with great success on all types of furnaces.
Combustion Performance
2514 Burners are better with 200% or more excess air. They may also be operated with excess fuel without forming carbon if additional combustion air is available in the furnace near the burner. Excess fuel limit with heavy oil is 50% as atomization deteriorates at richer ratios. Burners can be turned down to atomizing air only, but stability limits vary depending on burner size, grade of oil, and furnace atmosphere. For prolonged operation on atomizing air only in furnaces over 1200°C specify an alloy burner nose.
Burners are suitable for some preheated combustion air applications (up to 350°C). Oil viscosity at the burners should not exceed 90 seconds R.W.I; oil pressure at the Ratio controller should be between 25 and 30 psi. Minimum atomizing air pressure at the burner is 24”wg for light oil, 42”wg for heavy oil.
| Burner Designation | 28”wg Air Pressure Drop Across Burner | 44”wg Air Pressure Drop Across Burner | ||||
|---|---|---|---|---|---|---|
| Air — cfh | Oil — lph | Air — cfh | Oil — lph | |||
| 2514-6A | 17 | 900 | 52 | 21 | 900 | 63 |
| 2514-7A | 28 | 400 | 79 | 34 | 800 | 99 |
| 2514-8AA | 48 | 900 | 139 | 60 | 000 | 171 |
| 2514-9AA | 81 | 500 | 230 | 100 | 000 | 282 |
| 2514-10A | 165 | 000 | 468 | 102 | 000 | 572 |
| 2514-11A | 247 | 000 | 698 | 303 | 000 | 857 |
Working Nature
Control: Normally, air primary with a cross-connected, pressure balance regulator. For maximum turndown, use a biased Regulator, or throttle gas only. To protect burner from heat damage, do not set air pressure below 2”wg in an 850°C furnace, or below 3”wg at 1000°C (whether gas is on or off). Gas pressure requirement: About 2”wg at the burner for natural gas on stoichiometric ratio; about 1/5 of the air pressure for coke oven gas. Preheated air: 2514 Burners are suitable for some applications with air preheated to 400°C.
Burner Block / Installation: Burner Blocks are cast refractory rated for 1450°C furnace temperature. They should be supported securely in the furnace wall by a layer of castable refractory at least 9" thick all around the Burner Block, extending back to the furnace shell and securely anchored to it. Burner Blocks are replaceable in the field except for the 2514-10A, whose mounting must be returned to the factory for Burner Blocks replacement. The 10A size is also available with a short Burner Block that extends 2" past the mounting plate. The remaining Burner Block length is then field constructed. For furnace walls thicker than the length of the Burner Block, tunnel beyond the end of the Burner Block should be flared at least 30°, starting at the OD of the Burner Block. If this is not practical, consult ATEC Experts for specific recommendations.
Jacketed Burner Blocks: 2514 Burners are available with support jackets around the Burner Blocks for applications where the Burner Block is not supported by furnace refractory. Jackets are available in three different metals and have maximum temperature ratings for each. They must be protected with sufficient insulation so as not to exceed rated temperature. Maximum temperature rating for jacket metals depends upon frequency of heat-up/cool-down cycles. As an example, batch annealing furnaces that are heated and cooled every day should use the “intermittent exposure” ratings. Continuous annealing furnaces that remain at the same temperature for months at a time can use the higher “continuous” rating.
| Designation | Jacket Metal | Continuous Max. Temp. | Intermittent Exposure |
|---|---|---|---|
| 2514-AS | Carbon Steel | 400°C | 400°C |
| 2514-A1 | 304 SS | 850°C | 750°C |
| 2514-A2 | 309 SS | 1100°C | 1050°C |
| Complete burners include Burner Block, mounting plate, precise oil control valve and an observation port into which a small quantity of atomizing air is introduced to keep the glass clear. Order pilot tips separately. | |||