Calcium sulphide formation in fluidized bed boilers
Artikel i vetenskaplig tidskrift, 1995

Analyses of samples of bed ash from a stationary fluidized bed boiler show the presence of calcium sulphide. In some samples, half of the total sulphur was present as sulphide. The samples containing CaS were obtained unstaged conditions and with a high excess air ratio, 1.3 to 1.4. The samples were taken after a stop in the limestone addition, i.e. at high SO2 emissions of about 1000 mL/m3 (ppm). No CaS was found during limestone addition when the SO2 emission was 300-400 mL/m3. This indicates that formation of large amounts of CaS may be initiated as the SO2 concentration exceeds some critical level.


Anders Lyngfelt

Chalmers, Institutionen för energiteknik

Vratislav Langer

Chalmers, Institutionen för oorganisk miljökemi

Britt-Marie Steenari

Chalmers, Institutionen för oorganisk miljökemi

Kathy Puromäki

Chalmers, Institutionen för oorganisk miljökemi

Canadian Journal of Chemical Engineering

0008-4034 (ISSN)

Vol. 73 2 228-233