Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report April 1 1996 June 30 1996 written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. The viscoelastic behavior of several concentrations of the slurries under study: Heavy Cleaned, Flotation Cleaned and Uncleaned samples were measured. The results obtained will be correlated with the atomization data. The effect of the viscoelastic property on the atomization is being investigated further, and the results will be reported in the final report.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report April 1 1995 June 30 1995 written by and published by . This book was released on 1995 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. Rheological properties of the CWS samples were determined after a six month storage period and the properties compared to freshly prepared samples. The rheological evaluations made include: flow characteristics under low shear rates; flow characteristics under high shear rates; and viscoelastic behavior under low frequency of oscillations. All the three CWS samples formed a hard pack solid at the end of the six month storage period, and had to be redispersed. The flotation cleaned coal and the heavy-media cleaned coal however, had the tendency to settle much faster than the uncleaned coal. Each of them remained completely dispersed during the duration of the testing period.

Download or read book Effect of Coal Beneficiation Process on Rheology written by and published by . This book was released on 1996 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. a correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. This report covers the tasks completed during the period April 1, 1996 to June 30, 1996 including viscoelastic behavior studies.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report July 1 1995 September 30 1995 written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report January 1 March 30 1995 written by and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. Results on the rheological evaluation of CWS are presented.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report November 1 1994 January 31 1995 written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. During this past quarter, the atomization data obtained from the previous quarters were analyzed using a model equation that had previously been developed during the course of this work. The analysis demonstrates that there are two possible mechanisms for the breakup of the CWS. The first term of the equation is due to competition between surface tension forces and aerodynamic shearing force and the second term is due the competition between viscosity forces and surface tension force.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report November 1 1993 January 31 1994 written by and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atomization study began with simulated fluids-(Mixtures of glycerine-water mixtures or corn syrup-water mixtures). This was done to minimize the experimental variables, optimize the experimental conditions for subsequent CWS atomization studies and also, simplify the analysis. The atomization data obtained for the simulated fluids are as shown in Table 1 and 2. The Air/Fuel ratio was varied from 0.12--0.40 in this study. variation of SMD as a Function of Viscosity. The SMD of glycerine-water mixtures at high Air/Fuel and low Air/Fuel data are plotted in Figures 5 and 6. The data show that at high Air/Fuel ratio, there is no significant change of the SMD as the viscosity is varied. However, at low Air/Fuel ratio the SMD shows a strong dependence on the viscosity. This is due to the fact that entrainment losses become more severe as A/F increases, In the high A/F regime, there is very little variation between the SMD and the viscosity of the glycerine-water solutions. This is probably due to the fact that the relative velocity between the droplets and the air is very high and this produces high pressure forces on the droplets to the same extent. Considerable dispersion of the droplets was also observed at high A/F ratios. This effect is minimized in the low A/F regime. Figures 5--8 show plots os SMD as a Function of Air/Fuel ratio. The plot show a linear dependence of SMD on the air to Fuel ratio. A fit of the experimental data to equation 1 in order to determine the necessary coefficients will be reported during the next quarter.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report October 1 1995 December 31 1995 written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. During the past quarter, the experimental data obtained from the previous quarter on pressure dependent atomization of coal-water slurries and simulated fluids glycerol-water and glycerol-xanthum gum, were analyzed. The spray data for the glycerol-water and glycerol-xantham gum solution are as shown in Figures 3 and 4. The plots indicate that the Sauter mean diameter (SMD) increase with decrease in Air/Fuel (AFR). Comparison of Figures 3 and 4 indicate that the addition of the xantham gum to the glycerol solution increases the SMD values especially in the low AFR regime. Figure 5 compares SMD data as a function of AFR for the CWS samples under study. The data indicate that the beneficiated CWS samples atomized well, and that the SMD values obtained at all AFR were smaller than the run-off mine CWS sample.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report May 1 1993 July 31 1993 written by and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to-CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report January 1 1993 March 31 1993 written by and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to-CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report October 1 1992 December 31 1992 written by and published by . This book was released on 1992 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Quarterly Progress Report January 1 March 31 1993 written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. The paper discusses FTIR analysis, wet grinding, flotation cleaned coal, and heavy media cleaned coal.

Download or read book Effect of Coal Beneficiation Process on Rheology atomization of Coal Water Slurries Final Report October 1 1992 July 31 1996 written by and published by . This book was released on 1997 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: To examine the factors that govern fine spray production during atomization of coal water slurries, an experimental study of the effect of coal beneficiation and their rheological properties on atomization of clean slurries was proposed. The objective of this study was to understand the effect of low shear, high shear rheology, and viscoelastic behavior on the atomization of beneficiated slurries.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 792 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 1995 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.

Download or read book Rheological Properties Essential for the Atomization of Coal Water Slurries CWS Quarterly Progress Report March 15 1992 June 15 1992 written by and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this project is to perform experiments to understand the effect of high shear and extensional properties on the atomization of coal-water slurries (CWS). Several CWS were prepared and their low shear rheological properties (i.e. rheology as a function of concentration, constant shear and, additive type, stability and slip effect) performed. The stability was determined using a settling column to study the shift in mass of the CWS as a function of time. Low shear testing of the slurries were used to determine the effect of yield stress on the concentration of the slurries.

Download or read book Rheology of Coal water Slurries Prepared by the HP Roll Mill Grinding of Coal Quarterly Technical Progress Report No 5 September 1 November 30 1993 written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research conducted during the Fifth Quarterly was aimed at the evaluation of the effect of a cationic surfactant, TMAE, on the rheology of coal suspensions and delineation of the effects of anionic, cationic and nonionic surfactants on the aggregation stability of Pittsburgh No. 8 coal-water slurries. The purpose of these studies was to improve the understanding of the behavior of coal-water slurries in the presence of chemical additives.