Abstract

ROJAS, ANDRÉS F.  and  BARRAZA, JUAN M.. PULVERIZED COAL DEVOLATILISATION PREDICTION. Dyna rev.fac.nac.minas [online]. 2008, vol.75, n.154, pp.113-122. ISSN 0012-7353.

The aim of this study was to predict the two bituminous coals devolatilisation at low rate of heating (50ºC/min), with program FG-DVC (“Functional Group-Depolimerization, Vaporisation and Crosslinking”), and to compare the devolatilisation profiles predicted by program FG-DVC, which are obtained in the Thermogravimetric Analyzer. It was also study the volatile liberation at (10⁴ K/s) in a Drop-Tube Furnace. The tar, methane, carbon monoxide, and carbon dioxide, formation rate profiles, and the hydrogen, oxygen, nitrogen and sulphu, elemental distribution in the devolatilisation products by FG-DVC program at low rate of heating was obtained; and the liberation volatile and R factor at high rate of heating was calculated. It was found that the program predicts the bituminous coals devolatilisation at low rate heating. At high rate heating, a volatile liberation around 30% was obtained.

Keywords : Char; devolatilisation; pulverized coal; drop-tube furnace; FG-DVC program.

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