کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
207308 461213 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gas holdup and bubble dynamics in a three-phase internal loop reactor with external slurry circulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Gas holdup and bubble dynamics in a three-phase internal loop reactor with external slurry circulation
چکیده انگلیسی

As modified three-phase fluidized reactors, loop reactors have been widely used in the area of chemical and energy processes. An external slurry circulation is introduced into a traditional internal loop reactor to improve the transfer between gas and slurry phases. Gas holdup and bubble dynamics are investigated by using the double-sensor conductivity probe technique in the present work. The results show that gas holdup inside the draft tube is greatly affected by the geometrical configuration and is much higher than that in the corresponding section of the annular region. Local, section-averaged, and overall gas holdups increase with increasing superficial gas velocity, while the effects of solid loading and external slurry circulation velocity are less significant than that of superficial gas velocity. Both local bubble size and bubble rise velocity vary significantly in different regions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 89, Issue 7, July 2010, Pages 1361–1369
نویسندگان
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