INFLUENCE OF COAL OXIDATION UPON CHAR GASIFICATION REACTIVITY

被引：58

作者：

ALVAREZ, T ^{[1
]}

FUERTES, AB ^{[1
]}

PIS, JJ ^{[1
]}

EHRBURGER, P ^{[1
]}

机构：

[1] CTR RECH PHYSICOCHIM SURFACES SOLIDES,CNRS,F-68200 MULHOUSE,FRANCE

来源：

FUEL | 1995年 / 74卷 / 05期

关键词：

COAL OXIDATION; CHAR GASIFICATION; REACTIVITY;

D O I：

10.1016/0016-2361(94)00012-G

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：

The objective of this work was to study the effect of coal air oxidation on char gasificiation reactivity. Three bituminous coals with different rank, from a low volatile bituminous coal to a high volatile C bituminous coal, were used. Isothermal runs were carried out in air, using particle sizes ranging between 48 and 855 mu m. The experimental results showed that char reactivity increases with degree of the coal oxidation. The dependence of the rate constant on temperature exhibits an activation energy in the range 105-130 kJ mol(-1). A slight increase in activation energy with coal oxidation extent was also detected. The changes in char textural development as a consequence of coal preoxidation explain the modifications of char reactivity. Good correlations were found between char reactivity, total surface area (TSA) and active surface area (ASA).

引用

页码：729 / 735

页数：7

共 23 条

[1]

Wilson, Fuel, 60, (1981)

[2]

Alvarez, Fuertes, Pis, Parra, Pajares, Fuel, 73, (1994)

[3]

Mahajan, Komatsu, Walker, Fuel, 59, (1980)

[4]

Maloney, Jenkins, Fuel, 64, (1985)

[5]

Tromp, Kapteijn, Boon, Moulijn, International Conference on Coal Science, (1987)

[6]

Laine, Vastola, Walker, Phys Chem., 67, (1963)

[7]

Bansal, Donnet, Stoeckli, Active Carbon, (1988)

[8]

Su, Perlmutter, AIChE J., 31, (1985)

[9]

Floess, Longwell, Sarofim, Energy & Fuels, 2, (1988)

[10]

Alvarez, PhD Thesis, (1993)

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