Performance Analysis on an Entrained-Flow Gasifier by Coal Moisture

Youngsan Ju, Hyeon Hui Lee, Min Oh, Chang Ha Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The performance of a 300-MW-class Shell entrained-flow gasifier along with moisture contents in low-rank coal was studied by a rigorous dynamic model. The developed model predicted the steady-state reference data well. The gas and slag temperature profiles decreased with higher coal moisture content, which led to an increase of the slag thickness on the gasifier wall. The high-moisture coal resulted in reduced power generation together with reduced low heating value (LHV) of syngas, higher amount of oxygen supply, and less energy recovery in the membrane. The amount of coal required to produce the same total LHV of syngas was smallest when the coal was dried to 5 % moisture. Therefore, the coal-drying level for appropriate power production was between 5 and 10 %.

Original languageEnglish
Pages (from-to)2257-2265
Number of pages9
JournalChemical Engineering and Technology
Volume40
Issue number12
DOIs
Publication statusPublished - 2017 Dec

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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