Quantification of Ash Deposit Build-up and Removal in a Straw and Wood Suspension-Fired Boiler

M.S. Bashir, P.A. Jensen, F. J. Frandsen, S. Wedel, K. Dam-Johansen, J. Wadenbäck & S.T. Pedersen
The aim of this study was to investigate ash deposit formation rate, heat uptake reduction and deposit removal by using advanced online ash deposition and sootblowing probes in a 350 MWth suspension­fired boiler, utilizing wood and straw pellets as fuel. The influence of fuel type (straw share in wood), probe exposure time, probe surface temperature (500, 550 and 600 oC) and flue gas temperature (600 ­1050 oC) on ash deposit formation rate, heat uptake by...