Utility Boilers

With over 150 years experience in Steam Generation and Burner Technology and a track record of 1000 units exceeding 80,000 MW installed worldwide, AC BOILERS SpA, formerly Ansaldo Caldaie, is in leading position in design, manufacturing and supply of Utility Boilers, coal, oil and gas fired.
Our range of production includes the following designs:

Ultra-supercritical and supercritical

  • Once-Through Benson
  • Two Pass arrangement
  • SH and RH outlet temperature above 600 °C for supercritical design
  • Low NOx coal and/or oil & gas firing
  • Divided back pass for RH control for coal firing
  • Gas recycling for oil & gas firing

Subcritical, two pass design for oil & gas firing

  • Drum type
  • Natural circulation
  • High sub-critical pressure up to 180 bar
  • Oil & gas opposed wall firing – Low Nox type
  • Gas recycling for RH control

Subcritical, two pass design for coal firing

  • Drum type
  • Natural circulation
  • High sub-critical pressure up to 180 bar
  • Coal opposed wall firing

Subcritical, box design for oil & gas firing

  • Drum type
  • Natural circulation
  • High sub-critical pressure up to 180 bar
  • Oil & gas opposed wall firing – Low Nox type
  • Gas recycling for RH control

Brochure AC Boilers

Ultrasupercritical & Supercritical Boilers