Max-Fire Series HRSG Boiler

Heat Recovery Steam Generators

  • Gas Turbine Size: 3 MW - 25 MW
  • Type: HRSG
  • Exhaust Gas Flows (lb/hr): Up to 1,000,000
  • Steam Flows (lb/hr): Up to 500,000
  • Steam Temperature: Up to 1,050 deg F
  • Duct Firing Temperature: Up to 2,800 deg F
  • Assembly: Shop Assembled
  • Circulation: Natural Circulation
  • Construction: Membrane Wall Construction
  • Gas flows up to 1,000,000 lb/hr
  • Steam Generation from 10,000 to 500,000 lb/hr
  • Design pressure up to 2,300 psig
  • Steam temperature to 1,050 °F
  • Supplemental firing with stack emissions available to less than 2 ppm NOx with SCR


The Cleaver-Brooks Max-Fire® boiler incorporates an integral furnace in a single-shop assembled, packaged HRSG design. The use of the membrane/water-cooled furnace technology allows it to be fired up to 2800°F while avoiding the use of high-maintenance refractory.


The Cleaver-Brooks HRSG achieves >80% efficiency compared to 56% for traditional technologies. It reduces up to 7.0 MMBtu/hr of fuel in conventional boilers and eliminates 2,870 tons of CO2 emissions annually per 1 MWe GT output.


  • Product Overview
  • Related Resources
  • Applications
  • Completely shop-assembled boiler with integral water-cooled furnace utilizing membrane-wall construction for firing temperatures up to 2800˚F.
  • Vertical (top) and horizontal gas outlet for meeting tight space requirements.
  • Combination bare and finned tube sections to provide efficient heat recovery.
  • Multiple finned-tube designs for optimized heat transfer.
  • Large steam drums to assure ample steaming area.
  • Hard or aluminum casing
  • Downcomers on both ends of the boiler.
  • Accommodation for selective catalytic reduction (SCR) and CO catalyst.


The Cleaver-Brooks Max-Fire boiler incorporates an integral furnace in a single shop-assembled package heat recovery steam generator (HRSG) that combines a furnace and evaporator and superheater, if applicable, with a natural circulation design. Capable of steam flows up to 500,000 lb/hr, the Max-Fire Series is offered in two different models. The MF (O-style) and MFA (A-style) models combine the waterwall combustion chamber formed from membrane wall construction with an evaporator section in a single shop-assembled boiler. The VL (O-style) and VLA (A-style) models offer an evaporator section without a furnace, but still enclosed with membrane wall construction.


Green Steam: Firing Hydrogen in HRSG Duct Burners →

Design Considerations for Small Scale HRSGs →


BYU Replaces Coal-Fired Boilers →

BYU replaced coal boilers with two O-type watertube boilers, a CBEX Elite firetube boiler and a HRSG, and pursued independence from local electrical grid.

Ethanol Plant Increases Efficiency and Reduces Fuel Costs →

The increased efficiency in the HRSG allows this plant to reduce energy costs.


CHP 101 – Basics of Combined Heat and Power →

Design Trends in Cogeneration →

Heat Recovery Steam Generator Animated Video →

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