کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4994910 | 1458481 | 2017 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of vertical heat exchanger tubes, their arrangement and the column diameter on the hydrodynamics in a gas-solid bubbling fluidized bed
ترجمه فارسی عنوان
تأثیر لوله های عمودی مبدل حرارتی، ترتیب آنها و قطر ستون بر روی هیدرودینامیک در بستر ذوب گاز سیال
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کلمات کلیدی
اندازه گیری اشعه ایکس، تختخواب مایع، داخلی، عمودی، خواص حباب، توزیع حباب، افزایش مقیاس،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The hydrodynamic behavior of a cold-flow gas-solid fluidized bed with an inner diameter of 22â¯cm is investigated by means of an ultra-fast X-ray tomographic setup. In the case of an exothermal reaction, heat exchanger tubes are required to remove the reaction heat out of the bubbling fluidized bed reactor. For the examined cold-flow model, the heat exchanger tubes are replaced by vertical internals that serve as placeholder. The influence of vertical internals on the bubble properties for different spatial configurations (square and circular arrangements) is investigated in addition to measurements without internals. Furthermore, the hydrodynamic results of the à 22â¯cm column are compared with an available data set which is based on measurements that were conducted in a column with an inner diameter of 14â¯cm. The objective of this paper is to provide measurement data for the scale-up process as well as for various computer models simulating a bubbling fluidized bed with vertical internals. It was found that the scale-up process from pilot plants to an industrial scale may be simplified if vertical internals are present, independently of the geometric arrangement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Multiphase Flow - Volume 97, December 2017, Pages 46-59
Journal: International Journal of Multiphase Flow - Volume 97, December 2017, Pages 46-59
نویسندگان
Frank Schillinger, Simon Maurer, Evert C. Wagner, J. Ruud van Ommen, Robert F. Mudde, Tilman J. Schildhauer,