Advanced One-Dimensional Entrained-Flow Gasifier Model Considering Melting Phenomenon of Ash

Jinsu Kim, Hyunmin Oh, Seokyoung Lee and Young-Seek Yoon
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Jinsu Kim: Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
Hyunmin Oh: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
Seokyoung Lee: Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
Young-Seek Yoon: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea

Energies, 2018, vol. 11, issue 4, 1-14

Abstract: A one-dimensional model is developed to represent the ash-melting phenomenon, which was not considered in the previous one-dimensional (1-D) entrained-flow gasifier model. We include sensible heat of slag and the fusion heat of ash in the heat balance equation. To consider the melting of ash, we propose an algorithm that calculates the energy balance for three scenarios based on temperature. We also use the composition and the thermal properties of anorthite mineral to express ash. gPROMS for differential equations is used to solve this algorithm in a simulation; the results include coal conversion, gas composition, and temperature profile. Based on the Texaco pilot plant gasifier, we validate our model. Our results show good agreement with previous experimental data. We conclude that the sensible heat of slag and the fusion heat of ash must be included in the entrained flow gasifier model.

Keywords: Texaco pilot plant; reactor modelling; ash fusion temperature (AFT); melting phenomenon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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