the effect of fuel pyrolysis on the coal particle combustion: an analytical investigation

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ID: 253916
2016
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Abstract
The aim of this work is to analytically investigate the symmetrical combustion of an isolated coal particle with the fuel pyrolysis effect. The modelling concept of coal particles is similar to that of the liquid droplet combustion but in the case of coal devolatilization, the particles do not shrink like droplet does due to evaporation of liquid fuel. The rate of devolatilization of volatiles can be calculated using the equation that is similar to Arrhenius equation. This model is based on an assumption of combined quasi-steady and transient behaviour of the process and especially focuses on predicting the variations of temperature profile, radius of pyrolysis and transfer number. It is revealed that the entrance of pyrolysis effect into the governing equations leads to the reduction in the film radius and consequently a reduction in the stand-off ratio and transfer number.
Reference Key
mostafa2016thermalthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Baghsheikhi Mostafa;Rahbari Alireza;Ashrafizadeh Seyed Mehdi;Bidabadi Mehdi
Journal Nature
Year 2016
DOI
10.2298/TSCI140622126B
URL
http://www.doiserbia.nb.rs/img/doi/0354-9836/2016/0354-98361400126B.pdf
Keywords
coal combustion analytical model devolatilization ratemechanical engineering and machinery

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