Influence of Sorbent Characteristics on Fouling and Deposition in Circulating Fluid Bed Boilers Firing High Sulfur Indian Lignite
Figure 7
(a) Photomicrograph of superheater deposit. Reflected light images showing curvilinear layering. (b) Photomicrograph of anhydrite CaSO4/iron oxide Fe2O3 layer—in transmitted polarised light-white anhydrite and dark brown iron oxide grains.