Download or read book Effects of Carbon Dioxide Storage in Coal on the Physical and Chemical Properties of Coal written by Tshifhiwa Maphala and published by . This book was released on 2012 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Carbon Dioxide Sequestration from a Synthetic Flue Gas Mixture on the Physicochemical Properties of Coal written by and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the view of the current global environmental problems, especially in the light of mitigating the effect of global warming due to anthropogenic carbon dioxide (C02) emissions to the atmosphere, numerous studies have been carried out recently on the sequestration of C02. Storage of C02 in storage sites, such as unmineable coal seams, has been identified as one of the promising options. The technology has an advantage of enhanced coalbed methane (ECBM) production. Though this technology has recently surpassed its infancy, there are still many unanswered questions related to the direct flue gas injection into unmineable coal seams from the point source. Thus, an investigation was undertaken to determine the sorption characteristics of South African anthracite and bituminous coals relevant to flue gas sequestration in unmineable coal seams, and the effect of short-term (120 hours) and long-term (2 232 hours) flue gas sequestration on physical and chemical properties of the coals. The sorption measurements were conducted on 10 g coal samples obtained from Ermelo (Coal EML) and Somkkele (Coal SML) coalfields with an average grain size less than 2 mm. A synthetic industrial flue gas containing 12% C02, 5.5% 02, 82% N2 , 0.38% S02, and 0.12% N02 acquired from Afrox was used as in the adsorption experiments. The two coal sampleswere subjected to high-pressure flue gas at temperatures of 30 °C, 40 °C, 50 °C, and 60 °C and pressures ranging from 1.0 MPa to 9.0 MPa using a novel design high-pressure volumetric sorption system (HPVSS). Subsequently, the coal samples exposed to 60 °C and 9.0 MPa were characterized after the sorption measurements using conventional and advanced characterization techniques. The standard properties of the coals were analysed using thedensity Stereopycnometer, proximate and ultimate techniques. The physical properties (surface area, total pore volume and pore diameter) were analysed using the low-pressure C02 and N2 techniques. While the organic and inorganic composition of the coal, its surface structure and carbon functional types, along with its surface morphology, elemental analysis, chemical functionality were analysed using petrography, the solid state carbon-13 nuclear magnetic resonance (13C ssNMR), universal attenuated total reflectance-Fourier transform infrared (UATR-FTIR), wide-angle X-ray diffraction (WAXRD), and field emission scanning electron microscopy with energy dispersive X-ray spectroscopy (FESEM-EDX). Sorption of C02 by the two coal as highly reduced in the presence of additional gases due to competition for sorption sites. The reduction in CO2 (contained in the flue gas) sorption capacity of coal, as up to 63% compared to Sorption of pure C02. The conventional analytical technique have revealed significant changes of the physical and chemical structure of the coal upon flue gas exposure. However, clear changes in chemical structure were observed throughA TR-FTlR analysis. The observable change in surface chemistry of the coals suggests that there is chemical interaction between the coals and the flue gas components at high pressure. Slight structural changes were observed from FESEM and WAXRD characterization. There were no obvious structural changes from the results obtained from 13C NMR, except for slight changes of up to 37% for Coal EML and 27% for COAL SML in the aliphatic carbons bonded to oxygen. These changes could be due to the presence in the flue gas; thus, substituting to form stronger intensities of the COO bonds as observed in the UATR-FTIR spectra. The flue gas sorption capacity of Coal SML was found to be more than Coal EML, suggesting that Coal SML has more affinity for the flue gas species. The .Extended Langmuir adsorption isotherm model was found to describe adequately the flue gas sorption process on both the coal samples. Lastly, it was depicted using COMSOL Multiphysics® tool that the rate of adsorption of the individual flue gas species is high, and the fluid velocity varies throughout the cleat structure as a result of erratic pore diameters of the cleat structure.
Download or read book Determination of the Effect of Carbon Dioxide water on Physical and Chemical Properties of Coal written by and published by . This book was released on 1986 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Effect of Carbon Dioxide Sequestration on the Hydro Mechanical Properties of Coal written by Mandadige Samintha Anne Perera and published by . This book was released on 2012 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of carbon dioxide (CO2) sequestration in deep coal seam causes both coal seam permeability and strength to be significantly reduced due to CO2 adsorption-induced coal matrix swelling. In addition, in deep coal seams CO2 exists in its super-critical state, which has quite different chemical and physical properties compared to sub-critical CO2. However, to date, there has been a lack of understanding regarding the effect of super-critical CO2 injection on coal flow and strength. The main objective of this study is to understand the effects of sub-critical and super-critical CO2 injections on coal flow and strength properties through experimental, numerical, theoretical and analytical investigations.A high pressure triaxial set-up was first developed to conduct permeability tests under high injecting and confining pressures, axial load and temperature conditions. The developed set-up was then used to conduct permeability tests for naturally fractured black coal samples taken from the Appin coal mine of the Bulli coal seam, Southern Sydney basin to identify the effects of sub-critical and super-critical CO2 injections on coal permeability. According to the experimental results, the amount of swelling due to CO2 adsorption depends on the CO2 phase state and confining and injecting pressures, and super-critical CO2 adsorption creates approximately double the swelling effect compared to sub-critical CO2. In addition, super-critical CO2 exhibits somewhat lower permeability values compared to sub-critical CO2, and this permeability reduction increases with increasing injecting pressure. Interestingly, N2 has the potential to reverse the CO2 induced swelling areas to some extent. If the temperature effect on permeability is considered, temperature has a positive effect on CO2 permeability. The CO2 permeability increment with increasing temperature increases with increasing CO2 pressure, and the effect of temperature on coal permeability is negligible at low CO2 pressures (
Download or read book Effects of Storage Upon the Properties of Coal written by Samuel Wilson Parr and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the various effects of storage upon the properties of coal. It examines the physical and chemical changes that occur during storage and the impact on the quality of the coal. The book also provides practical guidance on how to mitigate these effects through proper storage techniques. A must-read for anyone in the coal industry. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Effects of Storage Upon the Properties of Coal written by Samuel Wilson Parr and published by . This book was released on 1917 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Oxygen in Coal written by David White and published by . This book was released on 1909 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adsorption Properties of South African Bituminous Coals Relevant to Carbon Dioxide Storage written by Gregory Nworah Okolo and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenic GHG emissions -- Carbon capture and sequestration -- Coal properties -- Physical structural properties -- Micro-, meso-, and macro-pore properties -- Chemical-structural properties -- Sorption capacity -- Dubinin-Radushkevich-Henry law hybrid.
Download or read book Carbon Capture and Storage written by Rao Y. Surampalli and published by . This book was released on 2014-12 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Temperature Charge Density and Blending on the Carbonization of Coal written by F. W. Smith and published by . This book was released on 1955 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Reservoir Engineering written by L.P. Dake and published by Elsevier. This book was released on 1983-01-01 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is fast becoming the standard text in its field", wrote a reviewer in the Journal of Canadian Petroleum Technology soon after the first appearance of Dake's book. This prediction quickly came true: it has become the standard text and has been reprinted many times. The author's aim - to provide students and teachers with a coherent account of the basic physics of reservoir engineering - has been most successfully achieved. No prior knowledge of reservoir engineering is necessary. The material is dealt with in a concise, unified and applied manner, and only the simplest and most straightforward mathematical techniques are used. This low-priced paperback edition will continue to be an invaluable teaching aid for years to come.
Download or read book Impact of Chemical and Physical Properties of Coal Constituents on Coal Utilization written by ACS. Division of Gas and Fuel Chemistry and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EFFECTS OF STORAGE UPON THE PR written by Samuel Wilson 1857-1931 Parr and published by . This book was released on 2016-08-25 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Science written by Martin L. Gorbaty and published by Academic Press. This book was released on 2013-10-22 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal Science, Volume 3 presents and evaluates selected fundamental scientific areas on coal structure, reactivity, and utilization. This book describes the organic geochemistry of coal, role of oxygen functionality in coal and coal liquids reactivity, chemistry of hydrocarbon syntheses from carbon monoxide and hydrogen, and chemistry of coal in carbon monoxide/water systems. Other topics discussed include intermediates and mechanisms of the FTS of hydrocarbons; synthesis of oxygenates; and structural features of vitrinite macerals. The molecular weight determination for coal derivatives; thermal reactions of oxygen compounds; and alternative methods for removing oxygen compounds from coal-derived liquids are also elaborated. This publication likewise covers the aqueous coal conversions and conversion mechanism. This volume serves as a valuable source of information and guide to scientists and researchers interested in the coal literature.
Download or read book Carbon Dioxide Capture and Storage written by Intergovernmental Panel on Climate Change. Working Group III. and published by Cambridge University Press. This book was released on 2005-12-19 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: IPCC Report on sources, capture, transport, and storage of CO2, for researchers, policy-makers and engineers.
Download or read book Matrix Swelling with Carbon Dioxide Injection and Its Impact on Coal Permeability written by Ashwani Zutshi and published by . This book was released on 2005 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Permeability of coal is perhaps the most critical parameter controlling the flow of gas in a coalbed reservoir. The permeability of coal, however, is a dynamic property depending on several parameters like effective stress, gas pressure, water saturation, and matrix shrinkage/swelling due to desorption/adsorption. There have been a few studies that have concluded that matrix volumetric changes resulting from desorption of methane causes the permeability to change. This becomes even more critical when a second gas, like CO2 , is injected into a coal reservoir, either to sequester CO2 or enhance the production. Thus an understanding of the physical process of gas flow in coal, primarily the permeability and different parameters affecting it, is critical for CO2 sequestration and enhanced methane recovery. Two properties of coal, the permeability, and impact of gas flow on coal structure and its effect on flow behavior, were studied. The results of the experimental work involving measurement of matrix volumetric change indicate that the coal matrix "swells" with injection of CO2 . Numerical analysis suggests that this matrix strain can result in a significant reduction in coal permeability. Permeability of coal was also estimated in the laboratory for a well preserved core of coal. The permeability to CO2 was found to be much lower than that of methane, clearly suggesting that CO2 injection can result in permeability reduction.
