On the “Rag Layer” and Diluted Bitumen Froth Dewatering |
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Authors: | Jan Czarnecki Kevin Moran Xiaoli Yang |
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Affiliation: | 1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, Canada T6G 2G6;2. Syncrude Canada Ltd., Edmonton Research Centre, Edmonton, AB, Canada;3. Champion Technologies, Edmonton, AB, Canada |
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Abstract: | Samples of rag layer were collected using multiple bench‐top, batch centrifugations with optical microslides inserted to a centrifuge cell in the last spinning. Image analysis of the samples provided data for approximate sedimentation rate analysis, based on fractal floc dimension and Smoluchowski coagulation kinetic equation. The analysis shows that, if a flocculating chemical is used as a demulsifier, overdosing will necessarily result in deterioration of the process performance. Optimization of the chemical dosage and accurate process control are thus necessary conditions to attain satisfactory dewatering process performance |
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Keywords: | rag layer diluted bitumen dewatering |
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