Thermodynamic modelling of the system Al2O3-SiO2-CaO-FeO-Fe2O3 to predict the flux requirements for coal ash slags

被引：93

作者：

Jak, E ^{[1
]}

Degterov, S

Hayes, PC

Pelton, AD

机构：

[1] Univ Queensland, Dept Min Minerals & Mat Engn, Cooperat Res Ctr Black Coal Utilizat, St Lucia, Qld 4072, Australia

[2] Ecole Polytech, Ctr Res Computat Thermochem, Montreal, PQ H3C 3A7, Canada

来源：

FUEL | 1998年 / 77卷 / 1-2期

关键词：

coal ash slag; thermodynamic modelling; F*A*C*T; Al2O3-SiO2-CaO-FeO-Fe2O3; system;

D O I：

10.1016/S0016-2361(97)00137-3

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Slags are formed during coal combustion processes as a result of the melting and reaction of the mineral matter. Predicting the outcome of these complex chemical reactions has long been a problem. Improvements in chemical thermodynamic models of oxide systems and computational methods now make these predictions possible. In this paper a model of the system Al2O3-SiO2-CaO-FeO-Fe2O3, developed using the F*A*C*T computer system, is presented. Examples are given of the use of the model to predict the phases formed as a function of ash composition, temperature and oxygen partial pressure of the system. These examples show how results can be presented in forms which can be readily used by practising combustion engineers, and coal production and marketing personnel. (C) 1997 Elsevier Science Ltd.

引用

页码：77 / 84

页数：8

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