• Solvay - Rheinberg

Aalborg Energie Technik a/s Biomass Boiler Plant

Solvay - Rheinberg, Germany

AET assists Solvay in achieving its new greenhouse gas target by means of a new AET Biomass Boiler, which will lower the CO2 emissions by 190,000 tonnes/year, as it replaces a coal-fired boiler plant. Solvay has set the target to reduce its greenhouse gas emissions by 1 million tonnes during 2017 - 2025.

With the high efficiency cogeneration plant, called the Woodpower project, in Rheinberg (Nordrhein-Westphalen), the use of fossil fuel is to be reduced by 25% at the site. The investment is a part of Solvay's strategy to serve their customers in a more sustainable and competitive way.


The plant will burn recycled wood, which will be sourced locally in order to minimise the environmental impact.


Efficient and low emissions

The AET Biomass Boiler will be designed for a fuel heat input of 90 MWt and a boiler efficiency of 92%. The AET Combustion System and AET Biomass Boiler will be optimised for the project and are similar in design to the boiler at Tilbury Green Power.


The boiler is designed with a residence time of 2 seconds at 850 oC and with Inconel cladding in the furnace to protect against corrosion.


The AET Biomass Boiler has a short start-up time and a quick shut-down time as there is almost no refractory in the boiler. This also reduces the risk of slagging, reduces the cost of maintenance considerably and at the same time increases the availability.


The in-house power consumption for the boiler island, including flue gas cleaning, fans etc. is less than 1.3% of the fuel heat input. This enables Solvay to produce more power for export and/or own factory.


The combination of the AET Combustion System, AET Biomass Boiler and AET SNCR DeNOx System ensures low emissions, which comply with the German 17. BlmSchV and the new BAT associated emission levels from EU. The heavy metals and Dioxines/Furanes will be well below the permissible emission limit values.


AET designs, supplies, constructs and commissions the following scope:

  • AET Fuel Dosing System
  • AET Combustion System with AET Spreader Stoker and AET BioGrate
  • AET Biomass Boiler with superheaters and economisers
  • AET Tail End Heat Exchanger
  • AET Combustion Air System
  • Natural gas burners
  • AET SNCR deNOx System
  • AET Air Preheater
  • Ash handling system
  • Bag filter with adsorbent and active carbon injection system
  • Flue gas system and stack
  • Piping and ducting
  • Insulation
  • Structural steel for boiler house
  • Platforms and stairs
  • Instrumentation
  • PLC system and SCADA system.

Additional Information

  • Update from Solvay in Rheinberg about the Woodpower project can be seen here: Read more
  • To obtain more information about this biomass-fired plant and about AET: Contact AET sales.


90 MWth


111 bara


480 °C

Electrical power:

17 MWe

Process Energy: 65 MWth

The Solvay plant in Rheinberg.

The Solvay site in Rheinberg SEP 19.

  //  Home   //  References   //  Biomass-fired Plants   //  Solvay - Rheinberg
  • Aalborg Energie Technik a/s
  • Alfred Nobels Vej 21F
  • DK-9220 Aalborg East, Denmark
  • Tel +45 96 32 86 00
  • aet@aet.dk