کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6579582 1422934 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxygen transfer in pilot-scale contactors: An experimental and computational investigation into the effect of contactor design
ترجمه فارسی عنوان
انتقال اکسیژن در گیرنده های مقیاس خلبان: یک بررسی تجربی و محاسباتی در مورد تاثیر طراحی کنتاکتور
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Oxygen transfer is a key parameter in many industrial bioprocesses, however there are few direct comparisons between different reactor designs and their effect on the Oxygen Transfer Rate (OTR), particularly at high superficial velocities (i.e. greater than 0.1 m s−1). In this work, we have directly compared four different designs: a bubble column with a sparger having 0.5 mm diameter orifices, a bubble column with a sparger having 3 mm diameter orifices, a bubble column having an asymmetric sparger (with 0.5 mm orifices) and an airlift configuration. For the range of superficial velocities examined (0.11-0.31 m s−1), the OTR was between 4.0 and 10.2 kg m−3 h−1 with values increasing with the superficial velocity; however, the OTR was not a strong function of column design. We also examined a Computational Fluid Dynamics (CFD) model of the system; predictions were in satisfactory agreement with experimental data for the symmetrical bubble column while under-predicting the OTR for the bubble column with the asymmetric sparger and the airlift. Results from this work have clear implications in the design and operation of aerobic two-phase contactors as widely used in the bioprocess industries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 344, 15 July 2018, Pages 173-183
نویسندگان
, , , , ,