Prediction of coking dynamics for wet coal charge

Dariusz Kardaś; Sylwia Polesek-Karczewska; Przemysław Ciżmiński; Stelmach Sławomir

doi:10.1515/cpe-2015-0020

Prediction of coking dynamics for wet coal charge

Abstract

A one-dimensional transient mathematical model describing thermal and flow phenomena during coal coking in an oven chamber was studied in the paper. It also accounts for heat conduction in the ceramic oven wall when assuming a constant temperature at the heating channel side. The model was solved numerically using partly implicit methods for gas flow and heat transfer problems. The histories of temperature, gas evolution and internal pressure were presented and analysed. The theoretical predictions of temperature change in the centre plane of the coke oven were compared with industrial-scale measurements. Both, the experimental data and obtained numerical results show that moisture content determines the coking process dynamics, lagging the temperature increase above the water steam evaporation temperature and in consequence the total coking time. The phenomenon of internal pressure generation in the context of overlapping effects of simultaneously occurring coal transitions – devolatilisation and coal permeability decrease under plastic stage – was also discussed

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Authors (4)

Dariusz Kardaś
- IMP PAN Zakład Energii Odnawialnych
Sylwia Polesek-Karczewska
- IMP PAN Zakład Energii Odnawialnych
Przemysław Ciżmiński
- IMP PAN; Środowiskowe Studium Doktoranckie Zakład Energii Odnawialnych Wydział Mechaniczny PG
Stelmach Sławomir dr
- ICHPW ICHPW

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DOI:: Digital Object Identifier (open in new tab) 10.1515/cpe-2015-0020
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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: Chemical and Process Engineering : New Frontiers pages 291 - 303,
ISSN: 0208-6425
Language:: English
Publication year:: 2015
Bibliographic description:: Kardaś D., Polesek-Karczewska S., Ciżmiński P., Sławomir S.: Prediction of coking dynamics for wet coal charge// Chemical and Process Engineering-Inżynieria Chemiczna i Procesowa. -, iss. 36(3) (2015), s.291-303
DOI:: Digital Object Identifier (open in new tab) 10.1515/cpe-2015-0020
Verified by:: Gdańsk University of Technology