کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9623754 | 456583 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of internals and sparger design on mixing behavior in sectionalized bubble column
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An experimental study has been carried out to investigate the effect of internals and sparger design on mixing time (θmix) and fractional gas hold-up (ÉG) in a batch mode sectionalized bubble column. Air and water were used as the gas-liquid phases, respectively. In the present work, sparger with the percent free area (% FA) of 0.136 and 0.6% has been used and the superficial gas velocity (VG), liquid height to column diameter (Hc/D), percent free area of the sectionalizing plate was varied from 0.06 to 0.295 m sâ1, 3 to 4 and 4 to 23%, respectively. It was found that there is no significant effect of the sparger design on the mixing time but it does strongly depend on VG, Hc/D and % FA of the sectionalizing plate. The one-dimensional dispersion model successfully predicts the tracer concentration profile and the longitudinal dispersion coefficient. Also, the effect of the presence of the electrolyte too has been studied by adding a known volume of the tracer solution (NaCl). Correlations have been developed for the estimation of the fractional gas hold-up, mixing time, longitudinal dispersion coefficient (DL) and the intercell exchange velocity (uB).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 117-129
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 117-129
نویسندگان
Yogesh K. Doshi, Aniruddha B. Pandit,