Many recovery boilers suffer from chronic corrosion problems around the lower combustion air ports, including membrane wastage, nozzle wastage, windbox corrosion and damage, and tube cracking. These problems are generally related to poor OEM design of the port openings, nozzles and windboxes. Repairing the metal wastage can cost thousands of dollars per year.

Anthony-Ross Company can help you solve many chronic corrosion problems in recovery boilers, especially around the primary and secondary combustion air port openings.

Anthony-Ross solutions can eliminate your primary level corrosion problems by replacing OEM nozzles with our stainless steel port castings and optimized windboxes. Our port castings are designed to exactly fit the tube bends and are set in thermally conductive mastic, ensuring a good air seal and thermal connection to the tube wall. Our primary windboxes are designed to withstand smelt intrusions and incorporate a refractory floor seal to resist corrosion near the boiler wall.

Another cause of corrosion problems is process instability. Lower wall and floor tube cracking in particular has been related to temperature fluctuations and instability of the char bed.  Anthony-Ross Company port cleaners and dampers can improve your process stability by insuring a consistent and stable air flow to the boiler.  The Anthony-Ross Stacked Air System™ (patent pending) can further improve the process stability in the entire boiler and has been shown to reduce corrosion issues in the upper furnace.