Feasibility Study of Using a Coal/Water/Oil Emulsion as a Clean Liquid Fuel:Phase 2,Second Year. Interim Report,December 1977--February 1978.

摘要

That the particle size distribution has a major effect on the rheological properties of the emulsion was again confirmed in our work with small coal particles. When the average particle size of the PSOC 102coal was around 65microns,there was no trouble in making a stable 40-20-40emulsion with a smooth flow curve. In comparison,when this emulsion is made with the fine coal,there is a layer of clear liquid immediately formed on top of the emulsion. The flow curve with its anomalous behavior at high shear rates was repeated for a majority of the emulsions in which all the liquid was not incorporated into the emulsions. It was more difficult to find an emulsion with good kinetic and static stability using the finely ground coal. The test with soda ash,which showed a reduced SO sub 2level but no reduction in thermal efficiency,was a major accomplishment. (ERA citation 04:000167)