Three phase transient model of wet coal pyrolysis

Sylwia Polesek-Karczewska; Dariusz Kardaś; Przemysław Ciżmiński; Bartosz Mertas

doi:10.1016/j.jaap.2015.01.022

Three phase transient model of wet coal pyrolysis

Abstract

A one-dimensional transient mathematical model was developed to describe the thermal and flow phenomena during coal pyrolysis in a coke oven. The model was solved numerically using partly implicit methods for gas flow and heat transfer problems. It was successfully validated with industrial-scale measurements of temperature change in the middle-plane of the coke oven chamber. The evolution of temperature and pressure, distributions of gas and steam generation rates were presented and analyzed. Special emphasis is put on the progress of vaporization and condensation fronts and their impact on the moisture levels within the coal charge. The obtained results show that moisture content determines the coking process dynamics, lagging the temperature increase above the boiling temperature and in consequence the start up of pyrolysis. The effect of low permeability of coal in its plastic stage on the internal pressure peaks in a coke oven is discussed.

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Authors (4)

Sylwia Polesek-Karczewska
- Instytut Maszyn Przepływowych ZAKŁAD ENERGII ODNAWIALNYCH
Dariusz Kardaś
- Instytut Maszyn Przepływowych ZAKŁAD ENERGII ODNAWIALNYCH
Przemysław Ciżmiński
- Instytut Maszyn Przepływowych; Środoweiskowe Studium Dokteoranckie ZAKŁAD ENERGII ODNAWIALNYCH; Wydział Mechaniczny PG
Bartosz Mertas
- Instytut Chemicznej Przeróbki Węgla ICHPW

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS no. 113, pages 259 - 265,
ISSN: 0165-2370
Language:: English
Publication year:: 2015
Bibliographic description:: Polesek-Karczewska S., Kardaś d., Ciżmiński P., Mertas B.: Three phase transient model of wet coal pyrolysis// JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS. -Vol. 113, (2015), s.259-265
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.jaap.2015.01.022
Verified by:: Gdańsk University of Technology