RENTECH Boiler Systems is the industry leader among boiler manufacturers in direct fired boilers. RENTECH offers designs based on your unique application and operating conditions, including a full range of custom-designed direct fired packaged boiler systems to meet your most demanding project requirements.


Design Features

  • Available for steam capacities up to 500,000 lbs/hr, 1800 PSIG and 1000°F
  • Factory assembled natural circulation water tube boiler designs
  • Completely drainable convective superheater operates at lower gas side temperatures to extend superheater life
  • Two-stage convective superheaters dramatically improve performance over turndown
  • Conservative steam drum sizing (employs chevron vane separation technology to minimize moisture carryover)
  • Boiler design features to accommodate high cycling operation
  • 100% membrane wall fabrication provides a fully water-cooled furnace with zero gas bypass and inherently lower emissions
  • No use of refractory walls or refractory seals
  • Custom-engineered boiler design for each application
  • Elevated drums can be provided to accommodate project requirements
  • Five-year warranty on our headered front and rear membrane walls
  • Integrated SCR and CO systems for single source responsibility


Membrane Construction

  • Water wall technology used in all boiler designs
  • Saturated or superheated steam application
  • Reduces operating costs because it requires less maintenance to repair or replace damaged refractory
  • Enables faster startup and cool down


Headered Waterwall Design

RENTECH Boilers Systems’ exclusive headered membrane front and rear walls eliminate problems associated with other designs, including some that still employ refractory on the front and rear walls, or the use of water-cooled rear furnace walls with massive refractory on the front and rear walls, or the use of water-cooled rear furnace walls with massive refractory seals.

  • No use of refractory walls and seals
  • Allows for quicker startups and shutdowns
  • O type boilers or A type boilers
  • Extended life due to a cooler furnace environment
  • Lower CO emissions and optimized furnace design for ultra-low NOx applications


D Type Water Tube Boilers

  • Heavy industrial boiler applications burning gas, oil, refinery gas, hydrogen and off-gas fuels
  • Furnaces can be custom designed to fit site-specific requirements or for applications requiring integration of low emissions burner and SCR technologies
  • Single piece design, partial field erection or total field erection


A Type and O Type Water Tube Boilers

  • Convection banks designed for tight control of gas velocities
  • Custom designed for various fuel compositions, firing methods and allowable emissions


Single Pass O Type Water Tube Boilers

  • For lower pressure, gas-fired applications
  • Low gas side pressure drop
  • Low fan horsepower
  • Large furnace cross section
  • Symmetrical design for ease of shipment

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