Experiment study on solid slag in an entrained flow coal gasifier

Guo Yan Chen, Zhong Xiao Zhang, Bai Qian Dai, Jing Wang, Xiang He, Feng Bao Huang, Cheng Lu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The technology of coal gasification has been developed rapidly in recent years for its high usage of coal and low pollution emission. For increasing its applicability to high ash fusion coal, experimental studies on oxygen-enriched gasification characteristics of both high and low fusing temperature coal with 0.5 kg/h ordinary pressure entrained-flow gasification system was carried out. Four important results were discovered: the concentration of effective gas, the rate of carbon conversion and the efficiency of cooled coal gas all increase as increasing of temperature, and the fusing characteristics of ash slag are enhanced; With increasing of [O]/[C], the concentration of effective gas reduces whereas the rate of carbon conversion increases; When the reaction time is increased, all three parameters presented above increase and the fusing characteristics are enhanced more markedly; In addition, different coals have different fusing characteristics even under the same conditions. Ash fusing characteristic of lignite is intensified compared with that of bituminous under the temperature of 1300°C when the reaction time is 1.5 s.

Original languageEnglish
Pages (from-to)73-79
Number of pages7
JournalZhongguo Dianji Gongcheng Xuebao
Volume29
Issue number23
Publication statusPublished - 15 Aug 2009
Externally publishedYes

Keywords

  • Ash slag fusibility
  • Entrained flow bed
  • Gasification character
  • High ash slag fusibility coal
  • Rich oxygen gasification

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