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Iranian Journal of Chemistry and Chemical Engineering، جلد ۲۶، شماره ۳، صفحات ۳۷-۴۴
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Experimental Study of Coating in a Bottom Sprayed Fluidized Bed |
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| چکیده انگلیسی مقاله |
Several investigations have been devoted towards understanding the coating process in fluidized beds. Most of these studies focused on spraying liquid droplets over the bed. However, due to the complexity of these systems, more investigations are still required to quantify the effect of operating conditions on the coating criteria. The present work aims at fundamentally understanding and precisely determining the effect of different operating conditions on coating quality in a jetting fluidized bed where the coating agent is sprayed as liquid droplets into the bed. A 3-D fluidized bed with a spraying nozzle situated in the middle of a perforated distributor plate was used for the experimental study of the effect of the operating condition on the coating quality. Results from the experimental part showed that at maximum jet gas flow rate which the jet didn’t turn into a spout and turbulent stage of fluidization the coating quality improves, but there is a limitation for the binder flow rate(NAR=4.0E-5) which is recognized in this study and could be use for any fluidized bed coater in the same condition. Based on the experimental results, an empirical function was derived to predict the coating efficiency in different operating conditions and this function also could be used in the mathematical model. |
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| کلیدواژه‌های انگلیسی مقاله |
coating,Fluidized bed,Bottom spray,Jet |
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| نویسندگان مقاله |
سید مهدی علوی | sayed mahdi
department of chemical engineering, iran university of science and technology, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)
لیلا دکتر شهرام میرمومن |
department of chemical engineering, islamic azad university, north tehran branch, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
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| نشانی اینترنتی |
http://www.ijcce.ac.ir/article_7629_6cb14f42a25edf69c3cfb57b4f8dd7d6.pdf |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
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