Open AccessRheological properties essential for the atomization of coal water slurries (CWS). Quarterly progress report, December 15, 1994--March 15, 1995
Author(s) -
F Ohene
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/102281
Subject(s) - rheology , slurry , psoc , extensional definition , coal water , materials science , composite material , geology , engineering , paleontology , system on a chip , tectonics , embedded system
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, further rheological testing were performed on CWS samples that had been prepared and stored for a period of three months. The testing included low and high shear measurements as well as dynamic oscillatory measurements. The CWS tested were PSOC-1527 from Middle Kittaning, PSOC-1472 from Lower Banner and PSOC-1475 (Elkhorn No. 3). These tests were performed in order to delineate any differences in rheological properties due to aging, and how this differences will influence subsequent atomization of the slurries. The test results obtained on PSOC-1527 and 1472, showed slight variations in their rheological behavior when compared to previously obtained data on the same samples. The data obtained on PSOC-1475, however showed no significant variation