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Phase equilibria in synthetic coal–petcoke slags (Al2O3–CaO–FeO–SiO2–V2O3) under simulated gasification conditions
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Nakano, Jinichiro, Kwong, Kyei-Sing, Bennett, James, Lam, Thomas, Fernandez, Laura, Komolwit, Piyamanee and Sridhar, Seetharaman (2011) Phase equilibria in synthetic coal–petcoke slags (Al2O3–CaO–FeO–SiO2–V2O3) under simulated gasification conditions. Energy & Fuels, Vol.25 (No.7). pp. 3298-3306. doi:10.1021/ef200633q ISSN 0887-0624.
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Official URL: http://dx.doi.org/10.1021/ef200633q
Abstract
Phase equilibria of the Al2O3–CaO–FeO–SiO2–V2O3 system in synthetic slag mixtures simulating coal–petcoke slag chemistry at 1500 °C in an oxygen partial pressure of 10–8 atm were investigated by a series of quench experiments. Quenched samples were analyzed by inductively coupled plasma optical emission spectrometry (ICP), X-ray diffractometry (XRD), transmission electron microscopy (TEM), and wavelength dispersive X-ray (WDX). Two precipitated crystal phases were identified in molten slags: mullite (3Al2O3·2SiO2) in Al2O3-rich slags and karelianite (V2O3) in V2O3-rich slags. Scanning electron microscopy and TEM diffraction patterns confirmed the presence of the mullite and karelianite phases. On the basis of experimental results, an isothermal phase diagram of the Al2O3–CaO–FeO–SiO2–V2O3 system at 1500 °C and PO2 = 10–8 atm is proposed while keeping CaO = 7.0 wt % and FeO = 13.5 wt %.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Energy & Fuels | ||||
Publisher: | American Chemical Society | ||||
ISSN: | 0887-0624 | ||||
Official Date: | 21 July 2011 | ||||
Dates: |
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Volume: | Vol.25 | ||||
Number: | No.7 | ||||
Page Range: | pp. 3298-3306 | ||||
DOI: | 10.1021/ef200633q | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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