Research Article

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.
438384.fig.007a
(a)
438384.fig.007b
(b)