Download or read book The Influence of Carbon Dioxide on the Gasification Rate of Highveld Coal Chars at Elevated Pressures written by and published by . This book was released on 2018 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2 gasification -- Elevated pressure -- Highveld coal char -- Pore development.
Download or read book Carbon Dioxide Gasification Kinetics of a Highveld Coal at Elevated Pressures written by J. S. Pienaar and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year project report -- Chemical Engineering.
Download or read book Evaluation of Coal Char Gasification Kinetics and Pore Development in High Pressure Steam and Carbon Dioxide written by and published by . This book was released on 2020 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: High pressure steam and CO2 gasification kinetics -- Intrinsic reaction rates -- Pore development -- Highveld coal char.
Download or read book Experimental and process design study of a high rate gasification process written by Eyring Research Institute and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gasification Kinetics and Pore Development of a Highveld Coal Char at High Pressures written by S. F. Conradie and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year report -- Chemical and Minerals Engineering.
Download or read book Effect of Steam Partial Pressure on Coal Char Gasification of Highveld Coal written by P. P. Maré and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year report -- Chemical and Minerals Engineering.
Download or read book Reaction of Coal with Steam at High Pressures written by and published by . This book was released on 1968 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Carbon Dioxide Partial Pressure on the Reactivity of Bituminous Highveld Coals at Elevated Pressures written by M. K. Bobbert and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year project report -- Chemical Engineering.
Download or read book Effects of Pressure on the Properties of Coal Char Under Gasification Conditions at High Initial Heating Rates written by Randy Clark Shurtz and published by . This book was released on 2011 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of elevated pressure and high heating rates on coal pyrolysis and gasification were investigated. A high-pressure flat-flame burner (HPFFB) was designed and built to conduct these studies. The HPFFB was designed to provide an environment with laminar, dispersed entrained flow, with particle heating rates of ~10^5 K/s, pressures of up to 15 atm, and gas temperatures of up to 2000 K. Residence times were varied from 30 to 700 ms in this study.
Download or read book The Catalytic Effect of Potassium Carbonate K2CO3 on the CO2 gasification Rate of Highveld Coal written by S. Nel and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year report -- Chemiese en Mineraalingenieurswese.
Download or read book The Catalytic Effect of Sodium Carbonate Na2CO3 on the CO2 gasification Rate of Highveld Coal written by N. Nel and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final year report -- Chemiese en Mineraalingenieurswese.
Download or read book Evaluation of the Gasification Reactivity of Highveld Coals for Application in the Coal to Liquids Process written by Aldré Henning and published by . This book was released on 2017 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: High pressure -- Fixed bed -- Carbon dioxide -- Gasification -- Highveld -- Coal.
Download or read book Gasification of Pulverized Coal at Atmospheric Pressure written by George R. Strimbeck and published by . This book was released on 1960 with total page 78 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 The Effect of Carbon Dioxide Concentration on the Gasification Rate of Artificial Graphite written by P. V. N. Ramachandra Rao and published by . This book was released on 1955 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Kinetics of the Carbon Dioxide coal Char Gasification Reaction written by John T. Malito and published by . This book was released on 1982 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Carbonisation of Coal written by Vivian Byam Lewes and published by . This book was released on 1912 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
