HTS Eclipse – Tube Firing Burner (TFB) Series

Overview

The Eclipse Tube Firing Burner (TFB) is a nozzle-mixing burner engineered for radiant and immersion tube heating applications with firing inputs from 25,000 to 2,000,000 Btu/hr (7.3 to 585.6 kW). Its cast alloy nozzle generates an intense, adjustable-length flame with a vigorous high-spin geometry that scrubs the interior of fire tubes, removes the gas film boundary layer, and maximizes heat transfer effectiveness — delivering outstanding temperature uniformity for consistent product processing and extended tube life.

The TFB supports multiple fuels with the same nozzle, accommodates both ambient and preheated combustion air (PCA) up to 1000°F (540°C), and is compatible with straight, U, W, and Trident®-type radiant tube designs. When paired with Eclipse Bayonet-Ultra Recuperators, the system can achieve fuel savings up to 30% and NOx reductions up to 50% when used with the Eclipse E-Jector Flue Gas Recirculation Device.

Features & Benefits

• High-spin flame geometry scrubs the inside of fire tubes to remove the gas film boundary layer, increasing heat transfer effectiveness and promoting uniform tube temperatures for longer tube life and consistent process quality
• Multi-fuel capability — compatible with natural gas, propane, and butane using the same nozzle, supporting global application flexibility
• Preheated combustion air (PCA) option supports combustion air temperatures up to 1000°F (540°C), enabling fuel efficiency gains up to 20% via exhaust leg recuperator
• Adjustable air shroud maintains correct air velocity for different tube sizes and fuels, allowing precise flame length and profile control
• Integrated air and gas orifices supplied with each unit simplify commissioning and set-up
• Both air and gas inlets are rotatable in 90° increments for flexible piping arrangements
• Removable rear cover allows inspection and maintenance without breaking air pipework
• Two peepsights provide clear visual access for flame verification and adjustment
• Low NOx and low CO emissions — CO less than 10 ppm (corrected to 3% O2) at furnace temperatures between 1400°F and 1800°F
• Low air and gas pressure requirements with wide ignition and operational range
• Compatible with Eclipse Bayonet-Ultra Recuperators and E-Jector Flue Gas Recirculation Device for maximum system efficiency and NOx reduction
• Direct spark ignition (6 kVAC) standard across all models
• NPT or BSP piping connections available for global installations

Technical Specifications

• Firing input range: 25,000 to 2,000,000 Btu/hr (7.3 to 585.6 kW) across the TFB series
• Fuels: Natural gas, propane, butane (multi-fuel, same nozzle)
• Ignition: Direct spark ignition, 6 kVAC
• Flame detection: Flame rod or UV scanner (TFB030 and TFB075); UV scanner only (TFB200)
• Maximum preheated combustion air (PCA) temperature: 1000°F (540°C)
• Air tube lengths (TFB030 & TFB075): 76–609 mm (3–24 in.), adjustable in 25 mm (1 in.) increments
• Air tube lengths (TFB200): 149–599 mm (5.9–23.6 in.), adjustable in 25 mm (1 in.) increments
• Air inlet connection — TFB030: 1-1/2″ NPT / Rc 1.5
• Air inlet connection — TFB075: 2″ NPT / Rc 2
• Air inlet connection — TFB200: 3″ NPT / Rc 3
• Fuel inlet connection — TFB030: 1/2″ NPT / Rc 0.5
• Fuel inlet connection — TFB075: 3/4″ NPT / Rc 0.75
• Fuel inlet connection — TFB200: 1-1/2″ NPT / Rc 1.5
• Approximate weight — TFB030 & TFB075: 20–29 lbs (9–13 kg)
• Approximate weight — TFB200: 41–53 lbs (18–24 kg)
• CO emissions: <10 ppm (corrected to 3% O2) at furnace temperatures 1400°F–1800°F
• Low firing rate (without flame safety): 5,000 Btu/hr (1.5 kW) — TFB030 & TFB075; 25,000 Btu/hr (7.3 kW) — TFB200
• Low firing rate (with flame safety): 10,000 Btu/hr (2.9 kW) — TFB030 & TFB075; 50,000 Btu/hr (14.6 kW) — TFB200 (UV scanner)

Applications

• Radiant tube heating in industrial furnaces requiring uniform tube temperatures and controlled atmosphere processing
• Immersion tube heating in batch and continuous heat treating furnaces
• Straight, U-tube, W-tube, and Trident®-type radiant tube configurations
• Indirect heating processes where combustion gases must not contact the workload
• Automotive, aerospace, and general metal heat treating — annealing, hardening, tempering, and normalizing
• Applications requiring low NOx and low CO combustion performance
• High-efficiency systems paired with Eclipse Bayonet-Ultra Recuperators for maximum fuel savings
• Retrofit applications replacing existing tube-fired burners in existing furnace installations

Models / Configurations

• TFB030 – Firing inputs from 25,000 to 300,000 Btu/hr (7.3 to 87.8 kW); flame detection by flame rod or UV scanner; air inlet 1-1/2″ NPT/Rc 1.5; fuel inlet 1/2″ NPT/Rc 0.5
• TFB075 – Firing inputs from 25,000 to 750,000 Btu/hr (7.3 to 220 kW); flame detection by flame rod or UV scanner; air inlet 2″ NPT/Rc 2; fuel inlet 3/4″ NPT/Rc 0.75
• TFB200 – Firing inputs from 800,000 to 2,000,000 Btu/hr (234.3 to 585.6 kW); UV scanner flame detection only; air inlet 3″ NPT/Rc 3; fuel inlet 1-1/2″ NPT/Rc 1.5
• Non-PCA (Ambient Air) Option – Standard configuration for ambient combustion air supply
• PCA (Preheated Combustion Air) Option – Includes tap extensions; compatible with combustion air up to 1000°F (540°C); available for all TFB models
• NPT or BSP Piping – Both connection standards available across all models for domestic and international installations

Eclipse Tube Firing Burner (TFB) Accessories

• Eclipse Bayonet-Ultra Recuperator – Exhaust leg heat exchanger for radiant tube systems; multiple-tube design increases heat transfer area and delivers fuel savings up to 30%; suitable for exhaust streams up to 2100°F; available in sizes for radiant tubes with inside diameters from 3″ to 8″
• Eclipse E-Jector Flue Gas Recirculation (FGR) Device – Mounts to radiant tube exhaust or recuperator; reduces NOx emissions by 40–50%; rated for inside radiant tube diameters of 4″–6″ (102–152 mm) and maximum capacity of 500,000 Btu/hr (132 kW); maximum flue gas temperature at inlet 1400°F (760°C)

Documentation