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 journalArticle

112 Citations (Scopus)

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

Fingerprint

Coal
Lignite
Lime
Pyrolysis
Gasification
X ray diffraction analysis
Catalysis
Ion exchange
Physical properties
Catalysts
Air
lime

All Science Journal Classification (ASJC) codes

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

Cite this

Radović, Ljubiša R. ; Walker, Philip L. ; Jenkins, Robert G. / Effect of lignite pyrolysis conditions on calcium oxide dispersion and subsequent char reactivity. In: Fuel. 1983 ; Vol. 62, No. 2. pp. 209-212.
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Effect of lignite pyrolysis conditions on calcium oxide dispersion and subsequent char reactivity. / Radović, Ljubiša R.; Walker, Philip L.; Jenkins, Robert G.

In: Fuel, Vol. 62, No. 2, 02.1983, p. 209-212.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of lignite pyrolysis conditions on calcium oxide dispersion and subsequent char reactivity

AU - Radović, Ljubiša R.

AU - Walker, Philip L.

AU - Jenkins, Robert G.

PY - 1983/2

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