RECUPERATIVE RADIANT TUBE BURNER APPLICATIONS • Continuous Annealing Lines (CAL) • Continuous Galvanizing Line (CGL) • Continuous Silicon Lines • Heat Treating Systems • Roller Hearth Systems • Aluminium Process Furnaces FEATURES • Flexible “Retention Nozzle” burner design • Engineered NOx Emissions • Custom Engineered design • Laboratory verification of designs • Maximum combustion efficiency • Tube temperature uniformity • Rugged experience-based construction • 15,000 burners in operation The purpose of radiant tube combustion is to apply fuel fired heating, with the products of combustion isolated and separated from the furnace atmosphere. This will allow control of the furnace atmosphere to protect or modify the surface of the material being heated. When utilizing radiant tube combustion, attention must be paid to the following factors: • Thermal efficiency of the combustion process • Environmental emissions from the combustion process • Effect of the combustion process on the life of the radiant tube • Reliability of the combustion equipment itself • 55 years applications experience • Family of burner types available to suit application • World-wide manufacturing and service network

Bloom has been building radiant tube burners for over 55 years, with more than 15,000 radiant tube burners in operation. We were instrumental in the application of the design incorporating an internal recuperator inserted within the radiant tube. This long experience coupled with our R&D capabilities and engineering programs of continuous design improvement, puts us in a position to be the burner supplier of choice for radiant tube combustion applications. Burner combustion efficiency is achieved, first, by transferring as much of the heat, from the combustion process, directly into the process...

A unique and fundamental feature of a typical Bloom radiant tube burner design is the “Retention Nozzle” fuel nozzle. Quiet stable operation and uniform tube temperatures are obtained by utilizing this patented nozzle design. The nozzle distributes the air uniformly around the (center) gas stream while creating a partial vacuum between the two streams. This allows for a controlled mixing of the fuel and air, promoting flame stability and safe, reliable burner operation. RADIANT TUBE LIFE For proper radiant tube life, the maximum operating temperature at any point along the tube must not exceed...

In the application of the burners, a variety of control techniques can be employed. The final choice would depend on such considerations as: system configuration, fuels utilized, environmental considerations and product mix. Typical alternative considerations include: - Suction, Forced Draft or Push/Pull - High/Low, On/Off or Modulating - Mass Flow, Pressure Balance or Pulse Firing RELIABILITY Bloom burners are designed for continuous operation in demanding environments. The burners are manufactured from heavy alloy castings. Bloom burner designs are based on 50 years experience and backed up...

CAPABILITIES Quiet, stable operation across a wide range of parameters Exclusive “Retention Nozzle” Easy conversion of older designs to low NOx operation Easy conversion of existing design to multi-fuel operation 3” ID tubes and larger Rugged cast/machined alloy construction Operating temperatures up to 1950°F (1065°C) Operating efficiencies up to 80% (LHV) BURNER OPTIONS Radiant Tube Types A U tube RADIANT TUBE BURNER MODELS Today our customers can choose from the following burner types as best fits their applications: Piping Configuration E #2 fuel oil (nominally 20% excess air is required)...

Bloom Engineering 
Company, Inc.
 5460 Horning Road
Pittsburgh, PA 15236
 Phone: 412-653-3500
Fax: 412-653-2253 © Copyright 2011 BURNER SELECTION TABLE TYPICAL (Natural Gas Fuel) Burner Model Type Piping Configuration Forced Draft Suction, Push/Pull Suction, Push/Pull Suction, Push/Pull Suction, Push/Pull Forced Draft Forced Draft Forced Draft Forced Draft For your specific application, a Bloom engineer can assist with the selection process.