Interfacial properties of coal-water slurry fuels - on the effect of coal particle sizes
- Texas A&M Univ., College Station, TX (United States)
Experiments were conducted to investigate the effect of particle size on coal-water slurry (CWS) surface tension properties. Two different coal powder samples of different size ranges were obtained through sieving of coal from the Upper Elkhorn Seam. Two anionic surfactants, DDBS-soft (dodecylbenzene sulfonic acid) and 1840-x (sodium salt of sulfonated fatty acid), were selected for this test. The surfactant concentration varied from 0 to 1.0% in weight while the coal loading remained at 40% in weight for all the cases. A du Nouy ring tensiometer and a maximum bubble pressure tensiometer measured the static and dynamic surface tensions, respectively. The results show that both static and dynamic surface tensions tend to increase with decreasing coal particle sizes suspended in CWS fuels.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States); USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
- DOE Contract Number:
- FG22-94PC94120
- OSTI ID:
- 171584
- Report Number(s):
- CONF-950313-; ON: TI96120216; TRN: 95:007972-0014
- Resource Relation:
- Conference: 20. international technical conference on coal utilization and fuels systems, Clearwater, FL (United States), 20-23 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Coal utilization and fuel systems: Proceedings; PB: 780 p.
- Country of Publication:
- United States
- Language:
- English
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