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Vol.4 , No. 5, Publication Date: Sep. 8, 2017, Page: 48-55
| [1] | Hiroshi Satone, Department of Chemical Engineering, Graduate School of Engineering, University of Hyogo, Himeji, Japan. |
| [2] | Kenji Iimura, Department of Chemical Engineering, Graduate School of Engineering, University of Hyogo, Himeji, Japan. |
| [3] | Koharu Satone, Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan. |
| [4] | Junichiro Tsubaki, Department of Research, Nagoya Industrial Science Research Institute, Nagoya, Japan. |
| [5] | Takamasa Mori, Department of Chemical Science and Technology, Faculty of Bioscience and Technology, Hosei University, Koganei, Japan. |
Evaluation of the slurry characteristics is very important for various industrial processes. However, there are merits and demerits to traditional evaluation methods. Therefore, a sensor-type hydrostatic pressure measurement system was developed. Although this system is very useful, the apparatus required for this system is expensive. Based on this, a manometer-type hydrostatic pressure measurement system, which is inexpensive and simple to construct, was developed. However, because of the transport of liquid on the slurry side and manometer side through the sediment on the filter surface, the measurement accuracy decreases, accurate evaluation is not possible. Therefore, it is necessary to correct the results obtained by the manometer. In this study, the effects of the sediment on the measurement accuracy of this system were investigated. The results showed that its measurement accuracy was decreased by an increase in the permeation resistance of the dispersed liquid by the existence of dense sediment on the filter. To resolve this problem, the transport of the liquid in the filter and the sediment was modeled. Using this model, the decrease in the measurement accuracy was successfully corrected. In addition, the effects of the slurry conditions on the measurement accuracy of this system were investigated by simulation. The results showed that the abovementioned adverse effect on accuracy occurs under all slurry conditions. Moreover, the magnitude of the effects of the slurry conditions on measurement accuracy was in the following order: packing fraction, initial concentration, particle diameter, and initial height of the slurry.
Keywords
Hydrostatic Pressure Measurement, Slurry, Measurement Accuracy, Slurry Estimation, Dispersion State
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