Next Article in Journal
Critical Clearing Time and Wind Power in Small Isolated Power Systems Considering Inertia Emulation
Next Article in Special Issue
On the Heat Flux Vector and Thermal Conductivity of Slags: A Brief Review
Previous Article in Journal
The Influence of Non-Uniform High Heat Flux on Thermal Stress of Thermoelectric Power Generator
Previous Article in Special Issue
Effect of Heterogeneity in Coal Ash Chemical Composition on the Onset of Conditions Favorable for Agglomeration in Fluid Beds
Article Menu

Export Article

Open AccessReview
Energies 2015, 8(11), 12603-12668; doi:10.3390/en81112331

Modelling Underground Coal Gasification—A Review

1
Department of Chemical and Materials Engineering, University of Alberta, Donadeo Innovation Centre for Engineering, 9211–116 Street NW, Edmonton, AB T6G 1H9, Canada
2
School of Mining and Petroleum Engineering, University of Alberta, Edmonton, T6G 1H9, AB, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Mehrdad Massoudi
Received: 18 August 2015 / Revised: 25 October 2015 / Accepted: 27 October 2015 / Published: 6 November 2015
(This article belongs to the Special Issue Recent Advances in Coal Combustion and Gasification)

Abstract

The technical feasibility of underground coal gasification (UCG) has been established through many field trials and laboratory-scale experiments over the past decades. However, the UCG is site specific and the commercialization of UCG is being hindered due to the lack of complete information for a specific site of operation. Since conducting UCG trials and data extraction are costly and difficult, modeling has been an important part of UCG study to predict the effect of various physical and operating parameters on the performance of the process. Over the years, various models have been developed in order to improve the understanding of the UCG process. This article reviews the approaches, key concepts, assumptions, and limitations of various forward gasification UCG models for cavity growth and product gas recovery. However, emphasis is given to the most important models, such as packed bed models, the channel model, and the coal slab model. In addition, because of the integral part of the main models, various sub-models such as drying and pyrolysis are also included in this review. The aim of this study is to provide an overview of the various simulation methodologies and sub-models in order to enhance the understanding of the critical aspects of the UCG process. View Full-Text
Keywords: underground coal gasification; UCG modeling; coal underground coal gasification; UCG modeling; coal
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Khan, M.M.; Mmbaga, J.P.; Shirazi, A.S.; Trivedi, J.; Liu, Q.; Gupta, R. Modelling Underground Coal Gasification—A Review. Energies 2015, 8, 12603-12668.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top