کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6464744 1362211 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement on particulate mixing through inclined slotted swirling distributor in a fluidized bed: An experimental study
ترجمه فارسی عنوان
بهبود در مخلوط ذرات از طریق توزیع کننده چرخش شیب دار در یک بستر ذوب شده: یک مطالعه تجربی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- A low pressure blower is used for fluidization of alumina and river sands.
- Three distributor designs are investigated: perforated and slotted (90° and 45°).
- Particles exhibit pronounced mixing at 0.4 bed aspect ratio.
- Early fluidization obtained in 45° inclined distributor at high bed aspect ratio.
- The 45° inclined distributor enhanced the particulate mixing in a fluidized bed.

Previous studies show that excellent particulate mixing in a fluidized bed can reduce the operating cost during fluidization. Therefore, this paper investigates enhancement of particulate mixing in a fluidized bed by using novel inclined slotted swirling distributor. To reduce the cost of pumping power, small size, low pressure blower is used in the study. Moreover, Geldart group B bed materials with different bed aspect ratios and distributor designs viz., perforated plate, circular edged slots (90°) and novel swirling (45°) distributors are used. The novel distributor with 45° inclined slots was found to be effective at enhancing the circulation rate. Swirling flow pattern of the bed materials in a clock-wise direction is obvious in shallow bed, and two-layer transversal-lateral circulation motions are observed in deep bed. It can be concluded from the study that excellent particulate mixing as per rotated distributors is made possible by novel swirling-type distributor without the implementation of electric motor and mechanical rotation.

Graphical Abstract243

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 27, Issue 5, September 2016, Pages 2102-2111
نویسندگان
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