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Modelling of Nonlinear Behaviour during Combustion of Single Coal Char Particle
Jelemenský, Ľ., Markoš, J., Žajdlík, R. and Remiarová, B. Modelling of Nonlinear Behaviour during Combustion of Single Coal Char Particle Chemical Papers, Vol.54, No. 6b, 2000, 473-481
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n546ba473.pdf
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546ba473.pdf |
application/pdf |
276.98KB |
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| Author(s) |
Jelemenský, Ľ.
Markoš, J.
Žajdlík, R.
Remiarová, B.
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| Title |
Modelling of Nonlinear Behaviour during Combustion of Single Coal Char Particle
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| Journal name |
Chemical Papers
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| Publication date |
2000
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| Year available |
2000
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| Volume number |
54
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| Issue number |
6b
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| ISSN |
0366-6352
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| Start page |
473
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| End page |
481
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2000
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| Language |
english
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| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
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| Abstract/Summary |
Experimental and theoretical investigation of combustion of a single coal char particle is presented. As a model of coal char particle combustion the shell progressive mechanism was considered. The porous structure of an original, devolatilized and partially combusted particle was analyzed. Due to the bimodal character of the porous structure, the pore size distribution was determined by a sorption method and mercury porosimetry. Combustion experiments were carried out in an equipment where the TGA method was applied for process monitoring. This equipment allowed to study the behaviour of the coal char particle during the process of drying, degassing, and combustion. During the combustion process, the particle consisted of two regions { the noncombusted core and the ash layer. The time dependences of the particle mass, temperature in the particle and gas phase, and composition of the combustion products were measured. The obtained experimental results confirmed that the shell progressive mechanism can be applied for the mathematical description of combustion of single coal char particle.
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