BURNER SYSTEMS THAT SET THE INDUSTRY'S STANDARD OF EXCELLENCE
Cross-Section View of Duct Burner System

Coen Bharat burner systems perform to specification, whether the fuel source is natural gas, light or heavy oil, or special fuels such as coal gas and landfill gas.

Coen's duct burners for supplementary firing of turbine exhaust gas (TEG) deliver the lowest combined emmissions available, including oxides of nitrogen (NOx), carbon monoxide (CO), unburned hydrocarbons (UHC) and total suspended particulates (TSP).

 

Rugged Design delivers performance

Coen duct burners provide stable combustion with the latest generation of turbines at TEG oxygen levels greater than 11% by volume, wet. Heavy duty high alloy burner castings and rugged system components assure reliability. Turndown range is over 10:1 firing gas; 5:1 firings oil staging burners on and off.

Gas-Fired Burner

Coen's duct burner is the industry standard. This low draft loss design is capable of firing either natural gas or refinery gas. The use of many small burners distributed evenly across the duct provides the even temperature profile desirable for efficient heat recovery steam generator operation.

Side-Fired Duct Burner

When firing fuel oils, Coen's side-fired duct bruner delivers superior performance. The externally mounted oil atomizers can be removed and cleaned without turbine or boiler shutdown.

The patented Coen flame shield insures uniform heat distribution when firing agas or oil. TEG is supplied to the windbox by individual ducts taking a slip stream of TEG upstream of the burner. The oil atomizer, capable of firing a range of fuels from naphtha to No. 6 fuel oil, can be safely removed for maintenance.

Custom Designed Duct Burner

Coen develops specialty designs to meet exact site needs.

Examples include :

  • Air augmented designs for low O2 TEG streams.
  • In-line gas and light oil designs.
  • Low BTU gas firing designs for landfill, producer and coal gases.
  • Dirty gas designs incorporating clean-out provisions.

The low BTU gas duct burner for installation in coal gas-fired facilities is just one of many examples of Coen's design caability and flexibility.

All gas-fired burners are available in heat release ranges to more than 600 million BTU/HR.

A factory packaged and tested piping module and a micro-processor based flame safeguard system are included with the burner.