Operating method

Abstract From the Canadian patent

A method of operating a fluidized bed system typically, as a combustor system for power or steam generation by burning high-sulfer coal, which comprises forming an entrained fluidized bed in a first space region contianing a first solid bed particle component, such as a hematite ore containing over 90% Fe203 or, limestone, forming in a more limited space region within the first region a dense fluidized bed containing a second solid bed particle component, such as larger particles of the hematite essentially comprising a material having long-term physical and chemical stability in the fluidized bed system so as to be substantially non-agglomerating and not subject to substantial attrition …