Abstract
The overall objective of the proposed research program is to explore the potential application of a new invention involving a multistage column equipped with vortex-inducing loop-flow contactors (hereafter referred to as the multistage column) for fine coal cleaning process. The research work will identify the design parameters and their effects on the performance of the separation process. The results of this study will provide an engineering basis for further development of this technology in coal cleaning and in the general areas of fluid/particle separation. In the last quarter, we performed image analyses of gas bubble size using photographs obtained from the multistage column. In this quarter, the bubble size measurements in the conventional column was carried out. Also, correlations for results on gas holdup, bubble size and specific interfacial area were developed. In Table 1.1, the project schedule shows work accomplished to data.
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