The fate of sulphur during oxy-fuel combustion of lignite
Conference contribution, 2009

This work focuses on the sulphur chemistry in oxy-fuel combustion of lignite. Comparison is made with air-fired conditions, and the main combustion products containing sulphur (ash, SO2, SO3 and H2S) are examined by modelling and experimental data. The conversion of fuel-S to SO2 is lower in oxy-fuel than in air-fuel conditions and the SO2 concentration per unit energy supplied is therefore reduced. The modelling shows that the SO3 concentration is about four times greater than the concentration in air-firing. High SO3 and H2O contents in the oxy-fuel flue gas during wet recycling increase the acid dew-point by 20 to 30 K.

Author

Daniel Fleig

Chalmers, Energy and Environment, Energy Technology

Fredrik Normann

Chalmers, Energy and Environment, Energy Technology

Klas Andersson

Chalmers, Energy and Environment, Energy Technology

Filip Johnsson

Chalmers, Energy and Environment, Energy Technology

Bo G Leckner

Chalmers, Energy and Environment, Energy Technology

Energy Procedia

1876-6102 (eISSN)

Vol. 1 1 383-390

Subject Categories

Other Chemistry Topics

Chemical Sciences

DOI

10.1016/j.egypro.2009.01.052

More information

Created

10/7/2017