Norsaverket, Köping, Sverige

Plant information: Heating Plant (HP)
Capacity: 12 MWth
Boiler manufacturer: ÅPS
Boiler type: Grate
Fuel: Domestic and Industrial Waste
Installation year/s: 2009
Sonic Cleaner/s: 3 x APM150
Cleaning area: 1x Evaporator, 2x Economizer

Norsaverket is owned by VAFAB. Domestic and industrial waste is burnt in a Grate boiler of 12 MWth .

The boiler has an evaporator (EVAP1 – EVAP4) equipped with steam cleaning as well as two economizers (ECO1 and ECO2) equipped with compressed air cleaning. VAFAB wished to install Infrafone sonic soot cleaning on the evaporator in order to decrease the steam consumption as well as the erosion on the tubes. As far as the economisers were concerned, the compressed air cleaning functioned badly, which meant that the flue gas temperature after the economizer increased which led to an increased calcium consumption in the bag filter to meet the conditions of HCl and SO2.

Some of the benefits that the Sonic Soot Cleaning System has brought to the customer are:

  • Eliminated need of compressed air cleaning in the economizer.
  • Reduced need of steam soot blowing in the evaporator. The only steam soot blower in operation is the one on the top.
  • Increased boiler efficiency. The relative heat absorbing capacity has increased by approx. 75% in the economizers.
  • Low and stable differential pressure.