If you want to challenge your recovery boiler to perform better, you will get results only if operators can run the boiler without fighting the char bed.

Clyde Bergemann Anthony-Ross port cleaners and dampers give operators the tools they need to control the char bed without needing to use excess air below the liquor spray.

As primary ports get dirty the combustion air often bypasses to cleaner ports. This keeps the clean ports cleaner longer while allowing the dirty ports to black over. Periodic hand rodding cannot keep up with the fouling on many boilers, resulting in uneven and unstable airflows—and an unstable char bed.

Automatic port cleaners can help to stabilize the char bed by maintaining a consistent port opening and consistent air flow to the bed. And, if you want to reduce excess air below the liquor spray, primary port dampers allow you to reduce air mass flow while maintaining a desirable windbox pressure. This maintains the air jet velocity required to keep the char bed under control with less air.

Clyde Bergemann Anthony-Ross Stacked Air System™ (patent pending)

Many char bed problems can be traced to poor combustion at the secondary air level. Our Stacked Air System has been proven to improve char bed stability by improving the combustion at the secondary level, which allows reduced airflow from the primary level, reducing the excess air below the liquor spray. This, in turn, helps reduce carry over and improves boiler efficiency.

With improved char bed stability, hotter smelt, and improved smelt flows, there are fewer disturbances in and around the windboxes and dissolving tank. The boiler runs smoother and quieter, and operators can run the boiler better, because the char bed is under control. In addition, a stable char bed means consistent temperatures in the lower furnace, reducing the risk of tube cracking and corrosion.