The Combustion of Carbon, Coal and Coal Related Fuels in an Opposed Flow Diffusion Flame Burner PDF Download
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Author: Wing Kai Chin
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Author: Wing Kai Chin
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Interest in the combustion characteristics of coal and coal derived fuels relates primarily to their adaptation in existing and planned combustion devices and their propensity to produce increased pollutant emissions in comparison with petroleum fuels and natural gas. This work on solvent refined coal (SRC) is part of an experimental study of the mechanism of the burning of coal and coal derived fuels employing an opposed flow diffusion burner. SRC is a reconstituted tar-like material which has been solvent extracted from coal. This refined product is low in both sulfur and ash in comparison with the parent coal. Cylindrical rods were cast for burning, some containing fine imbedded thermocouples. The burning rate of the SRC was measured for a range of oxidizer (oxygen and nitrogen) blowing velocities and oxidizer oxygen mole fractions and the dependency on these parameters determined. The temperature profile in the condensed phase fuel was determined from a time to distance transformation made possible by the steady state nature of the burning. The similarity of the burning characteristics of SRC and pressed pulverized coal suggests that similar mechanisms control the burning of these two fuels in our experiments.
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Languages : en
Pages :
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The utility of the opposed flow diffusion flame (OFDF) apparatus for the study of the steady state combustion of gaseous, liquid, and polymer fuels has been recognized and utilized by a number of researchers. We have employed this configuration to observe the steady state diffusion flame combustion of pressed pulverized coal and graphite in an opposed flow of an oxygen/nitrogen mixture. Initial efforts have focused upon the pressing of pulverized coal into cylindrical rods of homogeneous properties, including the effect of binders and water content, the demonstration of the possibility of steady state burning of a fuel with a significant ash production, the determination of sample porosity, the measurement of burning (linear regression) rates, and the investigation of the primary experimental parameters, oxidizer flow velocity and oxygen fraction. Burning rates were observed to increase with oxidizer velocity and oxygen mole fraction. Because of the well controlled combustion environment and steady state burning which are characteristics of this experimental technique, additional measurements are suggested and are being pursued. These include the determination of the solid and gas phase temperature profiles, extraction of thermal diffusivity data under burning conditions, measurement of gas phase composition profiles, investigation of the relative importance of surface oxidation by oxygen and by carbon dioxide, and the determination of the fate of nitrogen contained in the fuel.
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Category : Aeronautics
Languages : en
Pages : 1134
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Category : Power resources
Languages : en
Pages : 840
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Category : Fuel
Languages : en
Pages : 580
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Category : Fire testing
Languages : en
Pages : 44
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Author: Charles E. Baukal, Jr.
Publisher: Cambridge University Press
ISBN: 1108660886
Category : Technology & Engineering
Languages : en
Pages : 193
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Book Description
A Gallery of Combustion and Fire is the first book to provide a graphical perspective of the extremely visual phenomenon of combustion in full color. It is designed primarily to be used in parallel with, and supplement existing combustion textbooks that are usually in black and white, making it a challenge to visualize such a graphic phenomenon. Each image includes a description of how it was generated, which is detailed enough for the expert but simple enough for the novice. Processes range from small scale academic flames up to full scale industrial flames under a wide range of conditions such as low and normal gravity, atmospheric to high pressures, actual and simulated flames, and controlled and uncontrolled flames. Containing over 500 color images, with over 230 contributors from over 75 organizations, this volume is a valuable asset for experts and novices alike.
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Category : Nuclear energy
Languages : en
Pages : 362
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Author:
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ISBN:
Category : Fuel
Languages : en
Pages : 378
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