Combined effects of inorganic constituents and pyrolysis conditions on the gasification reactivity of coal chars

Ljubisa R. Radovic; Katarzyna Steczko; Philip L. Walker; Robert G. Jenkins

doi:10.1016/0378-3820(85)90038-4

Combined effects of inorganic constituents and pyrolysis conditions on the gasification reactivity of coal chars

Ljubisa R. Radovic, Katarzyna Steczko, Philip L. Walker, Robert G. Jenkins

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

Abstract

A detailed phenomenological study of the gasification behavior of a North Dakota lignite was undertaken and the fundamental parameters that determine char reactivity were investigated. Differences in reactivity of up to three orders of magnitude were obtained by varying the conditions of coal pretreatment and pyrolysis. Pretreatment included demineralization with HCl and HF, ion exchange with ammonium acetate and back exchange with calcium acetate. Pyrolysis temperature, residence time and heating rate were varied in the range 975-1475 K, 0.3 s-1 h and 10 K/min-10⁴ K/s, respectively. The observed reactivity differences were rationalized in terms of variations in the concentration of carbon and catalyst active sites.

Original language	English (US)
Pages (from-to)	311-326
Number of pages	16
Journal	Fuel processing technology
Volume	10
Issue number	3
DOIs	https://doi.org/10.1016/0378-3820(85)90038-4
State	Published - Jun 1985

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology

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title = "Combined effects of inorganic constituents and pyrolysis conditions on the gasification reactivity of coal chars",

abstract = "A detailed phenomenological study of the gasification behavior of a North Dakota lignite was undertaken and the fundamental parameters that determine char reactivity were investigated. Differences in reactivity of up to three orders of magnitude were obtained by varying the conditions of coal pretreatment and pyrolysis. Pretreatment included demineralization with HCl and HF, ion exchange with ammonium acetate and back exchange with calcium acetate. Pyrolysis temperature, residence time and heating rate were varied in the range 975-1475 K, 0.3 s-1 h and 10 K/min-104 K/s, respectively. The observed reactivity differences were rationalized in terms of variations in the concentration of carbon and catalyst active sites.",

author = "Radovic, {Ljubisa R.} and Katarzyna Steczko and Walker, {Philip L.} and Jenkins, {Robert G.}",

note = "Funding Information: This study was supported by the Gas Research Institute, under contract No. 5014-363-0235. Initial support for LRR in the form of a Fulbright Scholarship was provided by the Yugoslav--American Commission for Educational Exchange. Support for KS was provided by Office of Technical Cooperation, The United Nations. Elemental analyses were done by the Mineral Constitution Laboratory and coal samples were provided by the Coal Research Section of The Pennsylvania State University.",

year = "1985",

month = jun,

doi = "10.1016/0378-3820(85)90038-4",

language = "English (US)",

volume = "10",

pages = "311--326",

journal = "Fuel processing technology",

issn = "0378-3820",

publisher = "Elsevier B.V.",

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T1 - Combined effects of inorganic constituents and pyrolysis conditions on the gasification reactivity of coal chars

AU - Radovic, Ljubisa R.

AU - Steczko, Katarzyna

AU - Walker, Philip L.

AU - Jenkins, Robert G.

N1 - Funding Information: This study was supported by the Gas Research Institute, under contract No. 5014-363-0235. Initial support for LRR in the form of a Fulbright Scholarship was provided by the Yugoslav--American Commission for Educational Exchange. Support for KS was provided by Office of Technical Cooperation, The United Nations. Elemental analyses were done by the Mineral Constitution Laboratory and coal samples were provided by the Coal Research Section of The Pennsylvania State University.

PY - 1985/6

Y1 - 1985/6

N2 - A detailed phenomenological study of the gasification behavior of a North Dakota lignite was undertaken and the fundamental parameters that determine char reactivity were investigated. Differences in reactivity of up to three orders of magnitude were obtained by varying the conditions of coal pretreatment and pyrolysis. Pretreatment included demineralization with HCl and HF, ion exchange with ammonium acetate and back exchange with calcium acetate. Pyrolysis temperature, residence time and heating rate were varied in the range 975-1475 K, 0.3 s-1 h and 10 K/min-104 K/s, respectively. The observed reactivity differences were rationalized in terms of variations in the concentration of carbon and catalyst active sites.

AB - A detailed phenomenological study of the gasification behavior of a North Dakota lignite was undertaken and the fundamental parameters that determine char reactivity were investigated. Differences in reactivity of up to three orders of magnitude were obtained by varying the conditions of coal pretreatment and pyrolysis. Pretreatment included demineralization with HCl and HF, ion exchange with ammonium acetate and back exchange with calcium acetate. Pyrolysis temperature, residence time and heating rate were varied in the range 975-1475 K, 0.3 s-1 h and 10 K/min-104 K/s, respectively. The observed reactivity differences were rationalized in terms of variations in the concentration of carbon and catalyst active sites.

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JO - Fuel processing technology

JF - Fuel processing technology

IS - 3

ER -

Combined effects of inorganic constituents and pyrolysis conditions on the gasification reactivity of coal chars

Abstract

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