Development of numerical simulation technique for coal gasification on entrained flow coal gasifier (modeling of coal gasification reaction and prediction of gasifier performance)

Hiroaki Watanabe, Maromu Otaka, Jun Inumaru

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A modeling of a coal gasification reaction and prediction of gasification performance of an entrained flow coal gasifier are presented in this paper. The purposes of this study are to develop an evaluation technique for a design and performance optimization of the coal gasifier using a numerical simulation technique and to confirm the validity of the model. The coal gasification model suggested in this paper is composed by a pyrolysis model, char gasification model and gas phase reaction model. A numerical simulation with the coal gasification model was carried out on the CRIEPI 2 tons/day bench scale coal gasifier. Influence of air ratio on gasification performance, such as a per pass carbon conversion efficiency, amount of the product char, a heating value of the product gas and cold gas efficiency, is presented on the 2t/d coal gasifier. Gas temperature distribution and product gas composition are also presented. Comparison between the computation and the experimental data shows that most features of the gasification performance have been captured accurately by the numerical procedure and the validity of the current model was confirmed.

Original languageEnglish
Pages (from-to)1856-1863
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume70
Issue number695
DOIs
Publication statusPublished - Jan 1 2004
Externally publishedYes

Fingerprint

coal gasification
Coal gasification
coal
Coal
gasification
Gasification
Computer simulation
predictions
simulation
Gases
products
cold gas
gas composition
design optimization
gas temperature
gases
seats
Conversion efficiency
pyrolysis
Temperature distribution

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

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abstract = "A modeling of a coal gasification reaction and prediction of gasification performance of an entrained flow coal gasifier are presented in this paper. The purposes of this study are to develop an evaluation technique for a design and performance optimization of the coal gasifier using a numerical simulation technique and to confirm the validity of the model. The coal gasification model suggested in this paper is composed by a pyrolysis model, char gasification model and gas phase reaction model. A numerical simulation with the coal gasification model was carried out on the CRIEPI 2 tons/day bench scale coal gasifier. Influence of air ratio on gasification performance, such as a per pass carbon conversion efficiency, amount of the product char, a heating value of the product gas and cold gas efficiency, is presented on the 2t/d coal gasifier. Gas temperature distribution and product gas composition are also presented. Comparison between the computation and the experimental data shows that most features of the gasification performance have been captured accurately by the numerical procedure and the validity of the current model was confirmed.",
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