Industrial Burner Types
Bloom Engineering manufactures a wide range of industrial burner and low NOx burners for industrial furnaces. This page identifies and explains the basic types of industrial burners with links to additional technical information.
For more information on NOx formation and burner design to minimize NOx, please click here
Direct Fired Burners (More information on Direct Fired Burners)
burners recirculate furnace gas into the flame. Its appearance is deceptively simple consisting of a body, gas nozzle, baffle and port. Air enters the burner body directly and the gas passes through the body separated from the air with the fuel tube. The refractory baffle separates the body from the burner block (port), which is within the wall of the furnace. More information on Bloom Baffle Burners
Air Staged Burners
In the first stage of an air staged burner, all of the fuel is mixed with a portion of the combustion air. The remaining combustion air is then added in one or more additional stages until the fuel is completely used. The first stage air is introduced through the inner air jets and the second stage air through the outer air jets. Fuel flows through the center.
Radiant Tube Burners
The objective of the radiant tube burner is to transfer heat from combustion gases to the radiant tube and then radiate the energy to the load. More information on Radiant Tube Burners
Regeneration uses a pair of burners which cycle to alternately heat the combustion air or recover and store the heat from the furnace exhaust gases. When one regenerative burner is firing, the other is exhausting the furnace gases. Regenerative burners have excellent thermal efficiency because they achieve very high preheat temperatures. More information on Regenerative Burners
Self-Recuperative Burners include a recuperator that is integral to the burner that preheats the incoming combustion air. The exhaust gases are ‘pulled back’ through the burner by an eductor which is located upstream of the burner. This design arrangement leads to a high air preheat temperature and excellent thermal efficiencies.
High Thermal Release (HTR) Burners
Bloom HTR Burners are similar to the baffle burner. In the small size range, the HTR burner uses a metallic nozzle rather than a ceramic one. The air jets have a high radial velocity component which imparts a high spin to the air. The port block has a dished area. The combination of the high spin and the block configuration produces a flame with a flat profile. The burner is shown schematically in Figure 2. The HTR Burner is inherently low NOx because large amounts of furnace gases are re-circulated into the flame area. Bloom has developed a lower NOx, version of the HTR with no loss of performance.
Ladle, Tundish & Nozzle Heating & Drying Stations
Bloom Engineering Company, Inc. supplies a complete line of packaged heating and drying stations for tundish, nozzle and horizontal and vertical ladle applications. Shop testing ensures minimum start-up time. Each unit is custom engineered for the application's needs.
Low Temperature Regenerative (LTR) Combustion System
The Low Temperature Regenerative (LTRTM) heat recovery system was developed for continuous or batch furnaces with a variety of burner configurations, control zones and operating temperatures up to approximately 1600°F (871°C), where maximum heat transfer and burner efficiency is required. Today, the most common device for energy savings in process/heat applications is a metallic recuperator. The LTR™ system is a more thermally efficient alternative to using a recuperator.