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Author : Arthur Henry Lefebvre
Publisher :
ISBN 13 :
Total Pages : 153 pages
Book Rating : 4.:/5 (22 download)
Download or read book The Atomization Characteristics of Coal-water Slurry written by Arthur Henry Lefebvre and published by . This book was released on 1986 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal-water Slurry Atomization Characteristics written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Use of an Apparatus to Measure the Dynamic Surface Properties of Coal-water Slurry Fuels for Applications to Atomization Characteristics written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomization Characteristics of Coal Slurries. First Quarterly Report, September 1-November 30, 1981 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to understand atomization of coal-water mixtures. The work is broken down into several tasks which will be accomplished over a period of two years. The tasks include: (1) selected review of solid-liquid mixture flow properties relevant to atomization and an update of slurry atomization review; (2) measurement of drop size characteristics of coal-water mixtures as a function of the key atomizer parameters for an air atomizer; (3) analysis and correlation of the data; and (4) preparation of a final report summarizing the results of the work. The work done in this period included: (1) modification of the atomizer test rig; (2) measurments using water; (3) measurements using a low coal concentration coal-water mixture; and (4) a continuing review of slurry atomization literature. Description of the work is provided in this report.
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (685 download)
Download or read book Development and Use of an Apparatus to Measure the Dynamic Surface Properties of Coal-water Slurry Fuels for Applications to Atomization Characteristics. Quarterly Report No. 5, August 1, 1993--October 31, 1993 written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cross-injecting spray system was designed and constructed to investigate the spray development and atomization behaviors of CWS fuel samples containing different additives. Distilled water was used as an atomized fluid in this preliminary stage. A laser diffraction particle sizing technique (the Malvern 2600D system) was used to determine the spatial distributions of the spray droplet diameters versus other relevant injection parameters. The overall spray development was also visualized using a high-speed photographic recording technique. The cross-injecting atomization system is a very comprehensive means of inspecting sprays that depend to an uncertain degree on surface properties and rheology.
Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (727 download)
Download or read book Development and Use of an Apparatus to Measure the Dynamic Surface Properties of Coal-water Slurry Fuels for Applications to Atomization Characteristics. Quarterly Technical Report, November 1, 1992--January 31, 1993 written by and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Texas A & M University (TAMU) has been awarded a DOE contract to study dynamic properties and atomization characteristics of coal-water slurry (CWS) fuels. Additives are essential for better mixing and stable suspension of coal powders and these additives change CWS properties. Dynamic properties will have major effects on CWS fuel atomization, which constitutes highly dynamic processes, and will determine the combustion as well as the pollutant formation behaviors. The dynamic surface tension of CWS fuels can be much higher than the corresponding static surface tension. Experimental study of correlating the atomization characteristics and dynamic properties of CWS fuels will be performed during the contract period. The research projects consists of five tasks. Task 1 selects appropriate additives and surfactants for CWS fuels by measuring the stabilizing characteristics and critical micelle concentrations (CMC). Task 2 implements the dynamic surface tensiometer operating based on the formation of maximum bubble pressure. Task 3 measures dynamic properties of CWS fuels as functions of bubble frequency while the fuel parameters are varied. The fuel parameters include coal loading, type of stabilizer and type of surfactant. Task 4 will devise a CWS fuel spray system and Task 5 will measure the spray droplet sizes using a laser diffraction technique.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (16 download)
Download or read book Development and Use of an Apparatus to Measure the Dynamic Surface Properties of Coal-water Slurry Fuels for Applications to Atomization Characteristics. Quarterly Report No. 3, February 1, 1993--April 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: Experiments were conducted to measure dynamic surface tension of various coal-water slurry (CWS) fuel samples containing different surfactants and coal loadings. A maximum air bubble pressure technique was used to measure dynamic surface tension. The coal used for the CWS had 50?m volume mean diameter (VMD) mined from the Upper Elkhorn Seam in Virginia. Five surfactants were selected for the study: Witconol NP-100, Ammonium DDBS (hard), Ammonium (soft), Witconate 1223H and Witconate 1840X. To determine critical Micelle concentration (CMC), static surface tension was also measured using a Du-Nouy ring tensiometer. Detailed and comprehensive data for dynamic surface tension for a 50% CWS mixture has been documented and presented.
Download or read book Development and Use of an Apparatus to Measure the Dynamic Surface Properties of Coal-water Slurry Fuels for Applications to Atomization Characteristics. Final Report, September 1, 1992--December 31, 1993 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments were conducted to measure the dynamic surface tension of coal-water slurry (CWS) mixtures containing various types of surfactants and with varied coal loadings. The dynamic properties will affect CWS fuel atomization, which constitutes highly dynamic processes. A maximum air bubble pressure technique measured the dynamic surface tension. The dynamic surface tension, which can be much higher than the corresponding static surface tension, was measured for the CWS made from the coal mined from the Upper Elkhorn seam in Virginia. The coal had 50 [mu]m volume mean diameter (VMD). Five surfactants were selected for the study: one nonionic Alkylphenol Ethoxylate (NP-100), and four anionic surfactants; Branched Dodecylbenzene Sulfonic Acid (DDBS-hard), Linear Dodecylbenzene Sulfonic Acid (DDBS-soft), a Sodium Salt of a Branched Alkylbenzene Sulfonic Acid (1223H), and a Sodium Salt of Sulfonated Fatty Acid (1840X). A du-Nouy ring tensiometer measured the static surface tension to determine the critical micelle concentration (CMC). Measured values of dynamic surface tension are presented for 40% and 50% CWS mixtures with surfactant concentrations ranging from 0.1% to 5.0% in weight. The experiment found that the critical micelle concentration (CMC) of CWS was considerably higher than an aqueous solution because of the absorption of surfactant by coal particles. In addition, the dynamic surface tension continuously decreased beyond the CMC because suspended coal particles retarded the surfactant migration. The CWS dynamic surface tension showed wide variations of up to a factor of two depending on the type of surfactant whilst all the selected surfactants exhibited a same range of static surface tension values. The dynamic surface tension increased with increasing coal loadings in CWS. The primary reason for this is believed to be because of the increased absorption and physical blockings of coal particles.
Author : Patricia Lynn Meyer
Publisher :
ISBN 13 :
Total Pages : 219 pages
Book Rating : 4.:/5 (163 download)
Download or read book An Analysis of the Atomization Process in Coal-water Slurry Sprays written by Patricia Lynn Meyer and published by . This book was released on 1986 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (933 download)
Download or read book Combustion of Pipelineable Coal-water Slurries written by and published by . This book was released on 1991 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report begins with a discussion of coal properties affecting the slurry pipelining and combustion of coals. The report then describes and discusses results of tests conducted on two pipelineable coal slurry products made from western Canadian foothills coals. The combustion of these products was assessed in a pilot-scale research boiler, with a commercial coal-liquid fuel used as a reference fuel. The results reported include the atomization characteristics, ignition stability, flame shape and size, sparkler density, ash distribution characteristics, and carbon content in ash. The effect of sample transportation procedures on the test results is also noted.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (88 download)
Download or read book Rheological Properties Essential for the Atomization of Coal Water Slurries (CWS). written by and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Cronin
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (452 download)
Download or read book The Effect of Fuel Film Thickness on Coal Water Slurry Atomization written by L. Cronin and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Brookhaven National Laboratory
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (123 download)
Download or read book Atomization Characteristics of Coal-water Mixtures written by Brookhaven National Laboratory and published by . This book was released on 1983 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (258 download)
Download or read book Fortran-Compiler unter dem Betriebssystem SCPX 1526 written by and published by . This book was released on 1985 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 936 pages
Book Rating : 4.:/5 (31 download)
Download or read book Fossil Energy Update written by and published by . This book was released on 1982 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (727 download)
Download or read book Rhelogical Properties Essential for the Atomization of Coal Water Slurries (CWS). written by and published by . This book was released on 1992 with total page 16 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). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air-to CWS. A correlation between the extensional and high shear 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, several experimental studies on pressure dependent atomization of Coal-water slurries and simulated fluids were performed. Also surface tension, elastic, high and low shear viscosities were performed. These tests were performed to initiate the understanding of the fundamental parameters that govern the atomization process of CWS.
Author : A. Jaffre
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (599 download)
Download or read book Experimental Research on Coal-water Slurry Atomization and Combustion in a Flash Expansion Burner with a Thermal Power of 200 KW written by A. Jaffre and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
