SteamGen™ 8 Projects

In projects where power production is the primary requirement SteamGen™ 8 offers the best and most readily available HRSG technology on the market.

Sappi - Austria

In January 2006 Aalborg Engineering was awarded the contract from Sappi Austria Produktions GmbH & Co. KG to supply a new HRSG for Gratkorn Paper Mill in Gratkorn, Austria.

The contract covers design, procurement, production, erection, commissioning, training and testing of a single steam pressure HRSG with hot water generating capacity.

The HRSG is designed as a supplementary and fresh air fired boiler. The steam capacity in exhaust gas mode and in ambient air mode is the same.

Project data

Client Sappi Austria Produktions GmbH & Co. KG
Location Gratkorn, Austria
Year of commissioning 2007
Gas turbine Siemens SGT-800
Boiler type SteamGen™ 8
HP Steam capacity 165 t/h
HP Steam pressure 120 bar
HP Steam temperature 520 °C
LP Steam capacity 240 t/h
LP Steam pressure 80 bar
LP Steam temperature 90 - 120 °C

Scope of supply

  • Natural circulation, single-pressure HRSG
  • Steel structure for building and HRSG
  • Platforms and access ways
  • Flue gas duct, silencer and stack
  • Duct burner and gas train
  • Combustion air fan and air ducting
  • Deaerator
  • Boiler feed pumps
  • Condensate system
  • Steam system
  • Drain, vent and blowdown system
  • Water & steam sampling and analysis system
  • Valves and instrumentation
  • Emission monitoring system
  • Instrument cable installation
  • Burner management and boiler protection system
  • Erection
  • Commissioning
  • Training and testing