Comparison of Two Coal-Gasifier-Designs with Moving-Bed and Internal-Circulating-Fluidized-Bed Configuration in One Reactor

Table 4: Ash fusion behavior of coke and lignite.

Fuel	Atmospheric conditions	Observed characteristic
		Initial shrinking temperature	Initial deformation temperature	Softening temperature	Hemispherical temperature	Fusion temperature
		in K
Coke^a	Oxidizing	1,263	1,613	1,632	1,668	> 1,883
Coke^a	Reducing	1103	1,544	1,584	1,650	1,764
Lignite^a	Oxidizing	1303	1,541	1,633	1,656	1,763
Lignite^a	Reducing	1103	1,573	1,593	1,696	1,751