The Influence of Alkali, Chlorine and Sulfur on Aerosol Formation
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2019

The use of low-quality fuels in power generation is typically motivated by a potential reduction in fuel costs or CO2 emissions, the latter in case the fuel is based on biomass. These features make low quality fuels attractive at the same time as such fuels are usually problematic to use in power generation due to fuel composition. One of the main issues is deposition of aerosols upon heating surfaces reducing heat transfer and causing high-temperature corrosion (HTC). The later most often related to alkali chlorides, and these are formed from alkali species and chlorine when released during the combustion process. The present work aims to investigate how the gas phase chemistry are connected to the formation aerosols and their characteristics. This is an ongoing work why only part of the preliminary results is presented focusing on the interaction between alkali, sulfur and chlorine in the gas phase. The results presented here indicate a clear correlation between the S/Cl ratio and the formation of alkali sulfates over chlorides. It is also indicated that the local conditions at which the species are released and available in the gas phase is important for the resulting formation of alkali sulfates.

Författare

Thomas Allgurén

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik, Energiteknik 2

Dan Gall

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik, Energiteknik 2

Yueming Wang

University of Utah

Xiaolong Li

University of Utah

Klas Andersson

Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik

Jost O.L Wendt

University of Utah

Clearwater Clean Energy Conference
Clearwater, Florida, USA,

Ämneskategorier

Energiteknik

Styrkeområden

Energi

Infrastruktur

Chalmers kraftcentral

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Skapat

2019-12-20