1996
DOI: 10.1080/00986449608936480
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Micromixing Effects on Barium Sulfate Precipitation in an MSMPR Reactor

Abstract: The Effects of non-ideal and nonhomogeneous mixing on barium sulfate precipitation in an MSMPR reactor were observed experimentally and analyzed theoretically. To generate nonhomogeneous mixing the unmixed feed streams were fed to the reactor at the same location (joint feeding mode) or a plug flow reactor was connected to the MSMPR reactor. These nonhomogeneous mixing conditions resulted in significant reductions in particle size and increases in particle numbers. These non ideal mixing effects were dependent… Show more

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Cited by 24 publications
(9 citation statements)
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“…Effect of the Impeller Speed. Several experimental studies have reported that the effect of the impeller speed on CSD is very complicated. ,, This complex effect reflects the interplay among three parties: reaction, crystallization, and mixing. The CFD simulation study of Wei and Garside 6 also revealed the same features in a continuous precipitator.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Effect of the Impeller Speed. Several experimental studies have reported that the effect of the impeller speed on CSD is very complicated. ,, This complex effect reflects the interplay among three parties: reaction, crystallization, and mixing. The CFD simulation study of Wei and Garside 6 also revealed the same features in a continuous precipitator.…”
Section: Resultsmentioning
confidence: 99%
“…One contribution to this size difference may come from the different feed pipe diameters used in the experiments and CFD simulations (section 3). Kim and Tarbell 18 found that bigger feed pipe diameters resulted in a larger crystal average size in their BaSO 4 precipitator. Also, the supersaturation level around the feed pipe is underestimated by CFD simulations, because using larger feed pipes evens out the supersaturation level.…”
Section: Transient Behavior Of Supersaturation and Csdmentioning
confidence: 99%
“…found. Kim and Tarbell 1996 Barresi et al, 1999 , in the semi-batch Taylor-Couette reactor both the model and the experimental data show a decrease of the mean crystal size when plotted against the Ž . rotational speed of the internal cylinder Figure 8 .…”
Section: Effect Of Operating Conditionsmentioning
confidence: 92%
“…Regarding ultrasound techniques, nonspectroscopic methods have been studied in the form of single-frequency acoustic emission with promising results, leading to less complex measurement setups [19,20]. Moreover, the influence of mixing speed on crystal size distribution (CSD) has been studied widely [21][22][23]. However, due to the abovementioned complexities, the development of functional monitoring and control schemes for these fast kinetic processes is still an ongoing research topic [24].…”
Section: Introductionmentioning
confidence: 99%