B&W's single-drum recovery boiler, now the standard in the pulp and paper industry, provides high availability with safe operation and low maintenance. We have been at the forefront of technologies which improve boiler and cycle efficiency, such as firing higher solids concentration liquors, using low pressure steam to heat combustion air, and feedwater heating.

Benefits of our PR boiler design includes:

• Increased efficiency
• High availability
• Improved safety
• Low emissions (CO, NO_x, SO₂ and VOC particulate)
• High solids firing for optimized thermal efficiency
• Advanced steam drum internals and riser/supply systems for circulation safety margin
• Reduced construction costs and greater schedule certainty with modularized design
• Overall lower boiler lifecycle cost

Our design features include:

• Superheater, generator and economizer assemblies that are structurally stable yet minimize the use of restraints that can serve as locations for deposit accumulation and fouling
• Single- and dual-sloped floors with varying elevations of smelt spouts to meet customer requirements for frozen smelt coverage of the lower furnace
• Customized air and liquor delivery systems that are computer modeled for optimum lower furnace combustion, reduced emissions and long term cleanability