Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۱، شماره ۲، صفحات ۶۵-۷۰
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عنوان انگلیسی Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
چکیده انگلیسی مقاله Effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated. Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radioactive particle tracking technique. These data were used for determination of mean velocities of upward-moving (including bubble wake and ascending clusters) and downward-moving (descending clusters) particles. It was found that the upward velocity increases by increasing temperature up to 300 ºC, however, it decreases by further increase in temperature. Due to the wall effect, there is no significant change in the mean velocity of downward-moving clusters. The change in hydrodynamic parameters with temperature can be a consequence of changing physical properties of the bed which have been represented by Reynolds number in this study.
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نویسندگان مقاله شبنم سنایی |
school of chemical engineering, college of engineering, university of tehran, p.o. box 11155-4563 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

نوید مستوفی |
school of chemical engineering, college of engineering, university of tehran, p.o. box 11155-4563 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

رامین رادمنش |
department of chemical engineering, ecole polytechnique de montreal, p.o. box 6075 station centre-ville, montreal, quebec, canada

رحمت ستوده باغ | sotudeh gharebagh
school of chemical engineering, college of engineering, university of tehran, p.o. box 11155-4563 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

جمال chaouki |
department of chemical engineering, ecole polytechnique de montreal, p.o. box 6075 station centre-ville, montreal, quebec, canada

نشانی اینترنتی http://www.ijcce.ac.ir/article_5991_223197ed0797ef7d481054e52bff74f4.pdf
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