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http://dx.doi.org/10.7316/khnes.2011.22.5.686

Modeling of Solid Particle-Slag Interactions in Entrained Gasification Reactor  

Chi, Jun-Hwa (Power Generation Lab., KEPCO Research Institute)
Kim, Ki-Tae (Power Generation Lab., KEPCO Research Institute)
Kim, Sung-Chul (Power Generation Lab., KEPCO Research Institute)
Chung, Jae-Hwa (Power Generation Lab., KEPCO Research Institute)
Ju, Ji-Sun (Power Generation Lab., KEPCO Research Institute)
Kim, Ui-Sik (Power Generation Lab., KEPCO Research Institute)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 686-698 More about this Journal
Abstract
Mathematical models for char-slag interaction and near-wall particle segregation developed by Montagnaro et. al. were applied to predict various aspects of coal gasification in an up-flow entrained gasifier of commercial scale. For this purpose, some computer simulations were performed using gPROMS as the numerical solver. Typical design parameters and operating conditions of the commercial gasifiers were used as input values for the simulation. Development of a densely dispersed phase of solid carbon was found to have a critical effect on both carbon conversion and ash flow behavior. In general, such a slow-moving phase was turned out to enhance carbon conversion by lengthening the residence time of char or soot particles. Furthermore, it was also found that guiding the transfer of char or soot into the closer part of the wall to coal burner is favorable in terms of gasification efficiency and vitrified ash collection. Finally, to a certain degree densely dispersed phase of carbon showed an yield-enhancing effect of syngas.
Keywords
Coal gasification; Entrained gasifier; Solid-slag interactions; Computer simulation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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