CO2 gasification rate analysis and modeling under high CO2 partial pressure conditions

Hiroaki Watanabe, Satoshi Umemoto, Shiro Kajitani, Saburo Hara, Hisao Makino

Research output: Contribution to journalConference article

Abstract

Coal char was gasified with carbon dioxide using a PDTF and TGA at high temperature and pressure to model gasification reaction rate by using Langmuir-Hinshelwood equation. Test conditions of temperature and partial pressure of the gasifying agent were determined to simulate the conditions in the O2/CO2 blown entrained flow coal gasifiers. As results, the gasification reaction rate increases with the increase carbon dioxide partial pressure, although the effect of the partial pressure was suppressed in the region where the partial pressure of carbon dioxide was relatively high. It is observed that the produced carbon monoxide gas acts to be an inhibitor against the gasification reaction and the effect was suppressed as the gaseous temperature increased. It is confirmed that these characteristics can be appropriately expressed by the Langmuir-Hinshelwood equation expression.

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Publication statusPublished - Dec 1 2010
Externally publishedYes
Event239th ACS National Meeting and Exposition - San Francisco, CA, United States
Duration: Mar 21 2010Mar 25 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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