line and duct burners
HC AIRFLO®
This unique principle of operation allows “HC” AIRFLO® burners to operate with both low NOx and low CO, over the complete turndown.
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Overview
MAXON Series HC AIRFLO® Duct Burners provide the low NOx operation in fresh and re-circulating industrial air heating applications. Series HC AIRFLO® low NOx Burners can operate in a process air stream with 12% or less oxygen content for optimal efficiency and reliability. The HC AIRFLO® natural gas burner ensures efficient, flexible operation with lower pressure drops than other duct burners.
Features & Benefits:
Features & Benefits:
- High heat release up to 8.5 MBtu/h per unit of burner length (12 in.)
- Clean combustion with low CO and NOx emission levels
- Minimal process air pressure drops locally across the burner as low as 0.2 wc
- Operates in fresh air, preheated air (up to 1100 °F) or low oxygen turbine exhaust gases
- Fires on natural gas, H2 and all mixtures. Special versions for propane, butane, LPG and refinery gases are available
- 100 % stainless steel construction for long life performance
- No external combustion air required
- Plug mounted in duct wall insures low installation costs
- Burner capacity independent of back pressure variations and uniform heat distribution along burner length due to high gas pressure
Specifications
Dimensions & Size Specifications
- Sizes
- Type M: 4-7.5 ft; Type L: 8-14 ft
- Type S: 1-7.5 ft (max duct width 160 in)
Pressure Specifications
- Typical Fuel Pressure
- Approximately 14.5 psi at nominal capacity (sizes up to 4 ft; higher for longer burners)
- Pressure Drop
- Local ΔP across burner as low as ~0.2 in wc
Temperature Control/Measurement
- Temperature Rating
- Downstream typically 1750 deg F (1400 deg F for low‑temp process firing)
- Upstream up to 1100 deg F (standard) or 1200 deg F with higher‑grade materials
Combustion, Mixing & Fuel Dynamics
- Oxygen Requirement
- Operates with process air oxygen levels down to ~12% when sufficiently preheated
Installation & Mounting Specifications
- Mounting Options
- Slide‑in unit with stainless steel mounting plug and dedicated support; easy installation and service
Processing & Performance Metrics
- Minimum Capacity
- Down to ~0.68 MBtu/h‑ft for most applications; ~0.50 MBtu/h‑ft for low‑temp (Tin<212 deg F) process firing
- CO/NOx Emissions
- Emissions depend on process temperature and O₂ level (consult Eclipse)
- Capacity Range
- Nominal 5.12 MBtu/h per foot; up to 8.5 MBtu/h per foot possible depending on application boundary conditions
Ignition, Flame & Supervision Specifications
- Flame Monitoring
- UV Scanner connection provided (UV supervision used)
- Ignition Type
- LVDT/HC pilot burner with ignition; pilot and accessories (ignition transformer, UV) mount on stainless mounting plug
Product Design & Configuration
- Burner Design
- Modular supplementary firing burner
Applications & Compatibility
- Applications
- Fresh air heating; turbine exhaust gas (TEG) reheating; TEG/AUX combined operation; fluidized bed start‑up; large incinerators
Overview
- Model Name
- HC AIRFLO®
Control, Logic & Functional Behavior
- Functions
- In‑duct firing line burner; high heat release with clean combustion and low CO/NOx; minimal local ΔP across burner
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas, Hydrogen and all mixtures; special versions for Propane, Butane, LPG and Refinery Gases
Material Specifications
- Material
- Stainless Steel
Dimensions & Size Specifications
- Sizes
- Type M: 4-7.5 ft; Type L: 8-14 ft
- Type S: 1-7.5 ft (max duct width 160 in)
Pressure Specifications
- Typical Fuel Pressure
- Approximately 14.5 psi at nominal capacity (sizes up to 4 ft; higher for longer burners)
- Pressure Drop
- Local ΔP across burner as low as ~0.2 in wc
Temperature Control/Measurement
- Temperature Rating
- Downstream typically 1750 deg F (1400 deg F for low‑temp process firing)
- Upstream up to 1100 deg F (standard) or 1200 deg F with higher‑grade materials
Combustion, Mixing & Fuel Dynamics
- Oxygen Requirement
- Operates with process air oxygen levels down to ~12% when sufficiently preheated
Installation & Mounting Specifications
- Mounting Options
- Slide‑in unit with stainless steel mounting plug and dedicated support; easy installation and service
Processing & Performance Metrics
- Minimum Capacity
- Down to ~0.68 MBtu/h‑ft for most applications; ~0.50 MBtu/h‑ft for low‑temp (Tin<212 deg F) process firing
- CO/NOx Emissions
- Emissions depend on process temperature and O₂ level (consult Eclipse)
- Capacity Range
- Nominal 5.12 MBtu/h per foot; up to 8.5 MBtu/h per foot possible depending on application boundary conditions
Ignition, Flame & Supervision Specifications
- Flame Monitoring
- UV Scanner connection provided (UV supervision used)
- Ignition Type
- LVDT/HC pilot burner with ignition; pilot and accessories (ignition transformer, UV) mount on stainless mounting plug
Product Design & Configuration
- Burner Design
- Modular supplementary firing burner
Applications & Compatibility
- Applications
- Fresh air heating; turbine exhaust gas (TEG) reheating; TEG/AUX combined operation; fluidized bed start‑up; large incinerators
Overview
- Model Name
- HC AIRFLO®
Control, Logic & Functional Behavior
- Functions
- In‑duct firing line burner; high heat release with clean combustion and low CO/NOx; minimal local ΔP across burner
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas, Hydrogen and all mixtures; special versions for Propane, Butane, LPG and Refinery Gases
Material Specifications
- Material
- Stainless Steel
- Sizes : Type M: 4-7.5 ft; Type L: 8-14 ft|Type S: 1-7.5 ft (max duct width 160 in)
- Typical Fuel Pressure : Approximately 14.5 psi at nominal capacity (sizes up to 4 ft; higher for longer burners)
- Temperature Rating : Downstream typically 1750 deg F (1400 deg F for low‑temp process firing)|Upstream up to 1100 deg F (standard) or 1200 deg F with higher‑grade materials
- Oxygen Requirement : Operates with process air oxygen levels down to ~12% when sufficiently preheated
- Mounting Options : Slide‑in unit with stainless steel mounting plug and dedicated support; easy installation and service
- Minimum Capacity : Down to ~0.68 MBtu/h‑ft for most applications; ~0.50 MBtu/h‑ft for low‑temp (Tin<212 deg F) process firing
- Flame Monitoring : UV Scanner connection provided (UV supervision used)
- CO/NOx Emissions : Emissions depend on process temperature and O₂ level (consult Eclipse)
- Capacity Range : Nominal 5.12 MBtu/h per foot; up to 8.5 MBtu/h per foot possible depending on application boundary conditions
- Pressure Drop : Local ΔP across burner as low as ~0.2 in wc
- Ignition Type : LVDT/HC pilot burner with ignition; pilot and accessories (ignition transformer, UV) mount on stainless mounting plug
- Burner Design : Modular supplementary firing burner
- Applications : Fresh air heating; turbine exhaust gas (TEG) reheating; TEG/AUX combined operation; fluidized bed start‑up; large incinerators
- Model Name : HC AIRFLO®
- Functions : In‑duct firing line burner; high heat release with clean combustion and low CO/NOx; minimal local ΔP across burner
- Fuel Type : Natural Gas, Hydrogen and all mixtures; special versions for Propane, Butane, LPG and Refinery Gases
- Material : Stainless Steel
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