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Titolo:
Characterizing coal-gasifier slag-refractory interactions
Autore:
Rawers, J; Kwong, J; Bennett, J;
Indirizzi:
US DOE, Albany Res Ctr, Albany, OR USA US DOE Albany OR USAUS DOE, Albany Res Ctr, Albany, OR USA
Titolo Testata:
MATERIALS AT HIGH TEMPERATURES
fascicolo: 4, volume: 16, anno: 1999,
pagine: 219 - 222
SICI:
0960-3409(1999)16:4<219:CCSI>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Keywords:
coal-gasifier; slag-refractory interactions;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
0
Recensione:
Indirizzi per estratti:
Indirizzo: Rawers, J US DOE, Albany Res Ctr, Albany, OR USA US DOE Albany OR USAUS DOE, Albany Res Ctr, Albany, OR USA
Citazione:
J. Rawers et al., "Characterizing coal-gasifier slag-refractory interactions", MATER HIGH, 16(4), 1999, pp. 219-222

Abstract

To characterize refractory degradation and loss in commercial coal-gasifier combined cycle power systems, cup-type tests were conducted on high chromium-alumina, sinter-bonded refractories under laboratory conditions designed to simulate commercial operations of temperature, atmosphere, and slag interactions. These tests provided qualitative results from which the slag-refractory interactions can be characterized. These high chromium refractories were generally inert with respect to the coal slag components. However, in this study preliminary findings did show (1) iron( oxide) in the slag reacted with chrome sesquioxide to produce a Cr-Fe spinel at the slag-refractory interface, and (2) chrome was soluble in the molten slag. Comparison of cup-type test results with data from operating commercial plants suggests that the principal loss of refractory material in a coal-gasifier combustionchamber is chrome dissolution into the slag. Tests are currently underway to determine if minor modifications to the combustion process might increase refractory Life.

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Documento generato il 20/01/21 alle ore 12:40:39