Comparative study of the gasification of coal and its macerals and prediction of the synergistic effects under typical entrained-bed pulverized coal gasification conditions

Peng Jiang, Dengting Guo, Xiang Luo, Mengxia Xu, Tao Wu

Research output: Journal PublicationArticlepeer-review

3 Citations (Scopus)

Abstract

This research is focused on the gasification performance of coal and its corresponding macerals as well as on the interactions among macerals under typical gasification conditions by Aspen Plus modeling. The synergistic coefficient was employed to show the degree of interactions, while the performance indicators including specific oxygen consumption (SOC), specific coal consumption (SCC), cold gas efficiency (CGE), and effective syngas (CO + H2) content were used to evaluate the gasification process. Sensitivity analyses showed that the parent coal and its macerals exhibited different gasification behaviors at the same operating conditions, such as the SOC and SCC decreased in the order of inertinite > vitrinite > liptinite, whereas CGE changed in the order of liptinite > vitrinite > inertinite. The synergistic coefficients of SOC and SCC for the simulated coals were in the range of 0.94-0.97, whereas the synergistic coefficient of CGE was 1.05-1.13. Moreover, it was found that synergistic coefficients of gasification indicators correlated well with maceral contents. In addition, the increase in temperature was found to promote the synergistic coefficients slightly, whilst at an oxygen to coal mass ratio of 0.8 and a steam to coal mass ratio of 0.8, the highest synergistic coefficient was obtained.

Original languageEnglish
Article number032203
JournalJournal of Energy Resources Technology, Transactions of the ASME
Volume142
Issue number3
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Aspen Plus
  • Coal macerals
  • Energy conversion
  • Entrained-bed gasification
  • Fuel combustion
  • Synergistic effects

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Geochemistry and Petrology

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