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Role of inherent water in low-temperature oxidation of coal
Journal article   Peer reviewed

Role of inherent water in low-temperature oxidation of coal

H. Wang, B.Z. Dlugogorski and E.M. Kennedy
Combustion Science and Technology, Vol.175(2), pp.253-270
2003
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Abstract

The role of water content in coal oxidation was studied using an isothermal flow reactor at atmospheric pressure and temperatures below 100°C. Transient rates of consumption of oxygen and production of CO 2 and CO were measured during oxidation experiments, by means of an online dual-column micro gas Chromatograph and an oxygen analyzer. Experiments were carried out with a bituminous coal at three levels of initial water content, i.e., 0.8, 2.0, and 3.0%. Comparisons of the rates of production of carbon oxides during the oxidation experiments indicated that inherent water plays a role in chemical reactions occurring during coal oxidation. It was also found that the rate of oxygen consumption decreases with increasing water content of a sample. The current observations suggest that inherent water present in coal pores may react with carbonyl species to form carboxyl species during the oxidation process.

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Citation topics
7 Engineering & Materials Science
7.139 Energy & Fuels
7.139.1964 Spontaneous Combustion
Web Of Science research areas
Energy & Fuels
Engineering, Chemical
Engineering, Multidisciplinary
Thermodynamics
ESI research areas
Engineering
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