Waste Heat Boiler

Waste Heat Boilers

  • Casing Design: Internally lined and insulated, refractory constrion or membrane wall construction
  • Gas Flow (lb/hr): Up to 1,000,000
  • Steam or Hot Water: Steam
  • Steam Flows (lb/hr): Up to 500,000
  • Gas Outlet: Vertical, Horizontal
  • Incinerator Type: Solid, Liquid, Gaseous
  • Application: Dust, Ash Loading, Clean Gas
  • Type: A-type, O-type or D-type
  • Steam
  • 10,000 to 500,000 lb/hr
  • Temperatures to 900°F
  • Steam pressures up to 2,300 psig
  • Gas flow rates up to 1,000,000 lb/hr
  • A, O, and D-type designs


The Cleaver-Brooks waste heat watertube boilers are offered in a single pass design or multiple pass design including furnace / radiant sections.


Reusing waste heat for steam or power replaces the need for additional auxiliary-fired boilers. Every 1 MMBtu/hr recovered eliminates 410 tons of CO2 and 280 lbs each of NOx and CO annually to help meet energy efficiency, emissions reduction and decarbonization goals.

  • Product Overview
  • Related Resources
  • Applications
  • Multiple casing design options (internally lined and insulated, refractory construction or membrane wall construction).
  • Vertical (top) or horizontal gas outlet conforms to space restrictions
  • Combination of bare and finned tubes depending on flue gas recovery
  • Full-length steam and hot water drums with manways on each end for easy access


With our many years of custom energy recovery from combustors, industrial processes, and gasification processes, Cleaver-Brooks provides natural circulation designs with membrane wall construction.

Our single pass designs have the steam and water drums position parallel or perpendicular to the gas flow. These designs can incorporate an internal or external superheater, sootblowers, and economizers.

Our multiple pass designs include a radiant / furnace section to temper the heat of the flue gases before entering the screen or main evaporator bank. These designs are available in A-type, D-type, or O-type configurations.


Duct Burner →

Cleaver-Brooks is the only duct burner supplier to offer a complete system with an innovative duct burner solution for the cogeneration and combined cycle markets.

Selective Catalytic Reduction →

SCR is one of the most effective ways of reducing NOx in a flue gas stream, with reductions up to 95%.


How to Convert Waste Heat into Useful Steam →

  • Process Steam
  • Industrial Process
  • Power & Utilities
  • Refineries & Petrochemical