Combating high temperature corrosion by new materials and testing procedures - Corrosion exposures in the waste fired CFB boiler P15 at Händelö

Compared to traditional waste fired CFB boilers, a newly built CFB boiler by FW is designed with a horizontal pass. With this design, a decreased corrosion rate of the super-heater tubes is expected. However, no corrosion tests have been performed, showing if the horizontal pass design displays improved corrosion resistance. We will investigate the corrosion attack of superheaters in the horizontal pass by testing a new class of materials (so called FeCrAl-alloys) as well as state-of-art stainless steels and conventional materials. In order to generate generic knowledge about the corrosion attack the flue gas chemistry, deposit chemistry and corrosion attack be closely monitored and coupled together. This is done by a novel alkali online system, comprehensive deposit analyses, advanced corrosion analysis and complementary equilibrium calculations. The goal is to increase the understanding how the corrosiveness of flue gas varies with temperature. A methodology development .

Participants

Jesper Liske (contact)

Docent vid Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Collaborations

E.ON

Malmö, Sweden

Fortum Värme

Stockholm, Sweden

Foster Wheeler Energia

Espoo, Finland

Mälarenergi

Västerås, Sweden

MH Engineering

Karlskoga, Sweden

Sandvik Heating Technology

Hallstahammar, Sweden

Sandvik Materials Technology

Sandviken, Sweden

Söderenergi

Södertälje, Sweden

Funding

Swedish Energy Agency

Funding Chalmers participation during 2014–2018

More information

Latest update

2015-09-07