B&W specializes in converting pressurized boiler units to balanced draft operation.
Some boilers were originally designed with only forced draft (F.D.) fans. These boilers and associated flues and ducts typically operate at positive pressure. Pressurized boilers were designed for lower cost operation, since F.D. fan power and maintenance costs are less when compared to comparable units operating in a balanced draft mode (F.D. fans and I.D. fans). As these types of units have aged, and after experiencing numerous start-up cycles, the flue gas pressure boundary has typically deteriorated. This deterioration allows ash-laden flue gases and/or coal particles to escape from the boiler, flues, ducts and other air or flue gas path components. Ash and coal that accumulates outside of the boiler pressure boundary poses various maintenance, cleanliness and safety issues.
We completely analyze the structural, operating, performance and controls requirements necessary to modify and improve the air and flue gas path components for both positive and negative pressure operation. With a balanced draft boiler conversion, your maintenance cleaning costs can be significantly reduced, and the overall operating environment is cleaner and safer.
For more information, please contact us.
