Download or read book An Economic Analysis of Underground Gasification of Coal written by G. D. Bakulev and published by . This book was released on 1962 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Analysis of Underground Gasification of Coal written by Grigorij Dmitrievič Bakulev and published by . This book was released on 1962 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Analysis of Underground Gasification of Coal written by G. D. Bakulev and published by . This book was released on 1962 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Analysis of Coal Gasification written by and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Coal Gasification written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The following report is a description of a 7 year effort to develop a theoretical understanding of the underground coal gasification process. The approach used is one of the mathematical model development from known chemical and principles, simplification of the models to isolate important effects, and through validation of models to isolate important effects, and through validation of models with laboratory experiments and field test data. Chapter I contains only introductory material. Chapter II describes the development of two models for reverse combustion: a combustion model and a linearized model for combustion front instability. Both models are required for realistic field predictions. Chapter III contains a discussion of a successful forward gasification model. Chapter IV discusses the spalling-enhanced-drying model is applicable to prediction of cavity growth and subsidence. Chapter VI decribes the correct use of energy and material balances for the analysis of UCG field test data. Chapter VII shows how laboratory experiments were used to validate the models for reverse combustion and forward gasification. It is also shown that laboratory combustion tube experiments can be used to simulate gas compositions expected from field tests. Finally, Chapter VII presents results from a comprehensive economic analysis of UCG involving 1296 separate cases. 37 refs., 49 figs., 12 tabs.
Download or read book Computational Modeling of Underground Coal Gasification written by Vivek V. Ranade and published by CRC Press. This book was released on 2019-07-15 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with development of comprehensive computational models for simulating underground coal gasification (UCG). It starts with an introduction to the UCG process and process modelling inputs in the form of reaction kinetics, flow patterns, spalling rate, and transport coefficient that are elaborated with methods to generate the same are described with illustrations. All the known process models are reviewed, and relative merits and limitations of the modeling approaches are highlighted and compared. The book describes all the necessary steps required to determine the techno-economic feasibility of UCG process for a given coal reserve, through modeling and simulation.
Download or read book Economic Sensitivity Study of UCG Based on Field Performance Theory and Operational Experience written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper provides the results of an economic analysis in which uncertainty has been minimized through the use of the following three types of information: (1) theoretical and experimental correlations of underground coal gasification (UCG) operating parameters; (2) detailed process design based on operational experience; and (3) sensitivity variables. Independent variables cannot be fixed with certainty - for example, gas heating values are known for short-term field tests but remain uncertain for a long-term commercial operation. Such variables are designated sensitivity variables and are over their entire probable range. Other sensitivity variables are percent gas loss, well spacing, and the volumetric combustion sweep efficiency (VCSE). Depth and thickness of the coal seam are also designated sensitivity variables because they are strictly site-specific. A total of 1,296 cases have been considered in order to cover a full range of all sensitivity variables. Only-dirty gas selling prices are calculated in order to avoid assumptions concerning unproven methods of gas cleanup. Results show that the seam depth/thickness ratio is the most important variable affecting the economics of UCG. Low BTU gas from a thick coal seam of moderate depth (30 ft. seam at 600 ft.) can compete with current natural gas prices on a BTU basis even under poor operating conditions such as high leakage and low heating value. Well spacing and gas heating value also have notable impacts on the economics of UCG. The gas leakage rate and VCSE affect the economic results to a lesser extent for the range of values considered. Further research is needed in optimum well spacing, methods for control of the gas heating value, gas cleanup and utilization, environmental impact, and subsidence.
Download or read book Underground Gasification of Coal 1945 60 written by John P. Capp and published by . This book was released on 1963 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Coal Gasification and Combustion written by Michael S. Blinderman and published by Woodhead Publishing. This book was released on 2017-11-28 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underground Coal Gasification (UCG) is carried out in unmined coal seams, using wells drilled from the surface and converting coal into synthesis gas. The gas can be used for power generation and synthesis of automotive fuels, fertilizers and other products. UCG offers financial, social, and environmental benefits over conventional coal extraction and utilization methods and may play a critical role in ensuring energy security in the future. Underground Coal Gasification and Combustion provides an overview of underground coal gasification technology, its current status and future directions. Comprehensive in approach, the book covers history, science, technology, hydrogeology, rock mechanics, environmental performance, economics, regulatory and commercial aspects of UCG projects. The first book on the subject in forty years, it is unique in analysing more than a century of global UCG developments by experts from Australia, Canada, Poland, Russia, Ukraine, United Kingdom, the USA and Uzbekistan. Provides researchers, engineers, industry, educators and regulators with an authoritative overview of science and practical applications of underground coal gasification technologies Offers insight into efficiency, environmental performance, costs, permitting issues and commercial aspects of UCG projects Written by scientists and practitioners of UCG technology sharing hands-on experience of step-by-step UCG implementation
Download or read book Economics of Fuel Gas from Coal written by Battelle Memorial Institute and published by . This book was released on 1950 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oils and Gases from Coal written by Pergamon Press and published by Elsevier. This book was released on 2013-10-22 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oils and Gases from Coal reviews the state-of-the-art in oil and gases from coal in Europe and North America based on the work of the Symposium on the Gasification and Liquefaction of Coal. The said symposium is held under the auspices of the United Nations Economic Commission for Europe at Katowice, Poland on April 23-27, 1979. Separating 23 papers as chapters, this book begins with the opening lecture on the efficiency of coal gasification and liquefaction processes. Other papers focus on the assessment of world resources of coal and prospects for the production of different types of coal; comparative end-use efficiency of the use of coal; theoretical bases of coal gasification; underground coal gasification; and use of coal products for non-energy purposes. The utilization or disposal of coal processing residues; development of processes of semi-coking and gasification of oil shales; further development of Fischer-Tropsch synthesis; application of fluidization in coal gasification; and evaluation of the trade-offs from regional coal development and environmental strategies are also explained.
Download or read book Mathematical Modeling for Underground Coal Gasification written by Preeti Aghalayam and published by Momentum Press. This book was released on 2017-10-26 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underground coal gasification (UCG) is an important technique for future coal utilization. It has the potential to be a clean technology and to tap un-mineable, deep coal deposits across the world. Commercialization of UCG has been riddled with a variety of issues, including public perception and a lack of clear comprehension about underlying physicochemical phenomena. This book will bridge the gap in knowledge and highlight the modern findings related to the complex interactions in UCG. With a focus on the chemical reactions in UCG and treating the underground coal cavity as “nature’s own chemical reactor”, various mathematical modeling studies that serve to unravel some of the mysteries of this decades-old technique will be revealed.
Download or read book Underground Coal Gasification written by George H. Lamb and published by Noyes Data Corporation/Noyes Publications. This book was released on 1977 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Gasification of Coal written by John P. Capp and published by . This book was released on 1961 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Process analysis and simulation of underground coal gasification written by Hong Lae Chang and published by . This book was released on 1984 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Coal Gasification and Unconventional Gas Research Development and Demonstration Act written by United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Energy Research and Development and published by . This book was released on 1980 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underground Gasification of Coal written by and published by . This book was released on 1960 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
