Coal-gasification kinetics derived from pyrolysis in a fluidized-bed reactor

Jong Min Lee, Yong Jeon Kim, Woon Jae Lee and Sang Done Kim

Energy, 1998, vol. 23, issue 6, 475-488

Abstract: Coal pyrolysis and gasification reactions were carried out in a fluidized-bed reactor (0.1m i.d. by 1.6m height) over a temperature range from 1023 to 1173K at atmospheric pressure. The overall gasification kinetics for the steam–char and oxygen–char reactions were determined in a thermobalance reactor. The compositions of the product gases from the coal-gasification reactions are 30–40% H2, 23–28% CO, 27–35% CO2 and 6–9% CH4 with heating values of 2000–3750kJm−3. The heating value increases with increasing temperature and steam/coal ratio but decreases with increasing air/coal ratio. Our kinetic data derived from the two-phase theory on coal gasification in a thermobalance reactor and coal pyrolysis in a fluidized bed may be used to predict the product-gas compositions.

Date: 1998
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:23:y:1998:i:6:p:475-488

DOI: 10.1016/S0360-5442(98)00011-5

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