TY - GEN
T1 - The wettability of coal and petcoke slags on 90 wt.% Cr2O 3 wt.% Al2O3 gasifier refractory liners used in gasification
AU - Nakano, Jinichiro
AU - Seetharaman, Sridhar
AU - Bennett, James
AU - Kwong, Kyei Sing
AU - Moss, Tyler
PY - 2008
Y1 - 2008
N2 - By utilizing a Confocal Scanning Laser Microsope, the wettability as well as penetration behaviors of coal and petcoke slags on high chromia and alumina refractories have been investigated. The petcoke slag showed the lower initial deformation temperature and also lower melting temperature than the coal slag. The high chromia refractory, in general, returned better corrosionlerosion resistance against both slags with the exception that the alumina substrate outperformed in minimizing the slag penetration when the petcoke slag was interacted with a fined region of the refractory. The VONx-based phase was observed as a layer of (V, Cr, Fe)Ox at the interface between the petcoke slag and the high chromia substrate; and as discrete particles of (V, Al, Si)Ox at the interface between the petcoke slag and the alumina refractory. In some cases, Ca- and Fe-rich VOx, was also observed. For the coal slag, Ca-species penetrated most slowly through the fined regions of both refractories, whereas Fe-species was the fastest in any case.
AB - By utilizing a Confocal Scanning Laser Microsope, the wettability as well as penetration behaviors of coal and petcoke slags on high chromia and alumina refractories have been investigated. The petcoke slag showed the lower initial deformation temperature and also lower melting temperature than the coal slag. The high chromia refractory, in general, returned better corrosionlerosion resistance against both slags with the exception that the alumina substrate outperformed in minimizing the slag penetration when the petcoke slag was interacted with a fined region of the refractory. The VONx-based phase was observed as a layer of (V, Cr, Fe)Ox at the interface between the petcoke slag and the high chromia substrate; and as discrete particles of (V, Al, Si)Ox at the interface between the petcoke slag and the alumina refractory. In some cases, Ca- and Fe-rich VOx, was also observed. For the coal slag, Ca-species penetrated most slowly through the fined regions of both refractories, whereas Fe-species was the fastest in any case.
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M3 - Conference contribution
AN - SCOPUS:70349608265
SN - 189097725X
SN - 9781890977252
SN - 189097725X
SN - 9781890977252
T3 - 25th Annual International Pittsburgh Coal Conference, PCC - Proceedings
BT - 25th Annual International Pittsburgh Coal Conference, PCC - Proceedings
T2 - 25th Annual International Pittsburgh Coal Conference, PCC
Y2 - 29 September 2008 through 2 October 2008
ER -