Journal ArticleDOI
Underground coal gasification - Part II: Fundamental phenomena and modeling
TLDR
In this article, the authors provide a review of the fundamental physical phenomena in underground coal gasification and associated modeling efforts, including cavity growth at the sidewall and roof of the underground cavity and the transport phenomena and chemical reactions occurring in the permeable bed of char and ash and the void space.About:
This article is published in Progress in Energy and Combustion Science.The article was published on 2018-07-01. It has received 73 citations till now. The article focuses on the topics: Underground coal gasification & Coal.read more
Citations
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Journal ArticleDOI
Catalysts for gasification: a review
Ross A. Arnold,Josephine M. Hill +1 more
TL;DR: In this article, a review summarizes the research on potassium, sodium, calcium, magnesium, and heavy metal catalysts, the interactions between these catalysts and other species in typical feeds, and gasifier design considerations.
Journal ArticleDOI
Self-sustaining smouldering combustion of waste: A review on applications, key parameters and potential resource recovery
TL;DR: In this paper, the authors review the fuel gas production from thermochemical conversion processes involving self-sustaining smouldering combustion and provide an insight into the processes, reactor characteristics, key parameters, applications and gas emissions.
Journal ArticleDOI
Technical application of safety and cleaner production technology by underground coal gasification in China
TL;DR: In this paper, a new residual coal gasification mining system is proposed to utilize in-situ residual coal, mine water, and carbon dioxide for clean combustible gas production.
Journal ArticleDOI
Theoretical research on heat transfer law during underground coal gasification channel extension process
TL;DR: In this paper, an extension model of cylindrical channel was established to study the temperature distribution law of underground coal gasification (UCG) channel during the entire gasification process (dry and distillation stage, reduction stage and oxidation stage) based on the Fourier heat transfer theory and the Laplace transform method.
Journal ArticleDOI
Evolution of tar compounds in raw gas from a pilot-scale underground coal gasification (UCG) trial at Wieczorek mine in Poland
TL;DR: In this article, the authors present the results of the analyses of tar fractions contained in the process gas during a real underground coal gasification test at the Wieczorek mine in Poland.
References
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Book
Fundamentals of Heat and Mass Transfer
TL;DR: This paper introduced the physical effects underlying heat and mass transfer phenomena and developed methodologies for solving a variety of real-world problems, such as energy minimization, mass transfer, and energy maximization.
Journal ArticleDOI
Simplified Reaction Mechanisms for the Oxidation of Hydrocarbon Fuels in Flames
TL;DR: In this paper, simplified reaction mechanisms for the oxidation of hydrocarbon fuels have been examined using a numerical laminar flame model, and a simple procedure to determine the best values for the reaction rate parameters is demonstrated.
Hoek-brown failure criterion - 2002 edition
TL;DR: The Hoek-Brown failure criterion for rock masses is widely accepted and has been applied in a large number of projects around the world as discussed by the authors, however, there are some uncertainties and inaccuracies that have made the criterion inconvenient to apply and to incorporate into numerical models and limit equilibrium programs.
Journal ArticleDOI
Chemical kinetic modeling of hydrocarbon combustion
TL;DR: In this paper, a comprehensive model of high temperature hydrocarbon oxidation in combustion is presented, with emphasis on the hierarchical structure of reaction mechanisms for complex fuels, including both inhibition and promotion of combustion.
Journal ArticleDOI
The Maxwell-Stefan approach to mass transfer
Rajamani Krishna,J.A. Wesselingh +1 more
TL;DR: In this paper, the limitations of the Fick's law for describing diffusion are discussed and it is argued that the Maxwell-Stefan formulation provides the most general and convenient approach for describing mass transport which takes proper account of thermodynamic non-idealities and influence of external force fields.
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