کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6590832 456861 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mass transfer characteristics of liquid-liquid flow in small diameter conduits
ترجمه فارسی عنوان
ویژگی های انتقال جرمی جریان مایع در لوله های کوچک قطر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Experiments are conducted to investigate mass transfer characteristics during flow of two immiscible liquids through glass capillaries of internal diameter 2 mm and 6 mm. Water and toluene-acetic acid mixture are introduced in the test passage by a T mixer and the overall mass transfer co-efficient for acetic acid (10% by volume) diffusing from the organic to the aqueous phase is estimated for the slug, annular, dispersed and inverted dispersed flow patterns. Experiments are conducted for three flow orientations namely horizontal, vertical up and vertical downflow. The data are analysed by considering the prevailing flow pattern and correlating measured values of mass transfer co-efficient (kova) and solute transferred per unit pressure gradient with input parameters. It is seen that (kova) and solute transferred per unit pressure gradient is highest in case of slug flow as compared to other flow patterns. Further, (kova) is a function of both tube diameter and flow orientation, being higher in the smaller tube diameter and in downflow orientation of both the capillaries. The relationship between (kova) and energy dissipation factor is observed to be a function of phase velocity and flow pattern. Based on the experiments, the study proposes that an efficient co-current tubular contactor should be trumpet shaped with short horizontal sections connecting long vertical up and downflow sections.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 122, 27 January 2015, Pages 652-661
نویسندگان
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