Effect of lignite pyrolysis conditions on calcium oxide dispersion and subsequent char reactivity

Ljubiša R. Radović, Philip L. Walker, Robert G. Jenkins

Research output: Contribution to journalArticlepeer-review

115 Scopus citations

Abstract

A demineralized North Dakota lignite was loaded with 2.9 wt% Ca by ion exchange. Chars were prepared by pyrolysis in N2 at 1275 K and residence times between 0.3 s and 1 h. Major differences were observed in their subsequent reactivities in 0.1 MPa air. X-ray diffraction analysis was carried out to obtain information on the state and dispersion of the Ca species on the various chars. The results clearly indicate that CaO is the predominant species responsible for catalysis of lignite char gasification. It is concluded that pyrolysis residence time also has a profound effect on CaO dispersion. Thus, a correlation was established between a fundamental physical property (catalyst dispersion) and the observed gasification behaviour of lignite chars prepared under different pyrolysis conditions.

Original languageEnglish (US)
Pages (from-to)209-212
Number of pages4
JournalFuel
Volume62
Issue number2
DOIs
StatePublished - Feb 1983

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Effect of lignite pyrolysis conditions on calcium oxide dispersion and subsequent char reactivity'. Together they form a unique fingerprint.

Cite this