کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11000284 | 1423227 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interfacial mass transfer limitations of the Fischer-Tropsch synthesis operated in a slurry bubble column reactor at industrial conditions
ترجمه فارسی عنوان
محدودیت انتقال جمعی بین فیزر-تروپچ در یک رآکتور ستون حباب مایع در شرایط صنعتی عمل می کند
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کلمات کلیدی
ضریب انتقال توده، جابجایی عظیم، اندازه حباب، فیشر تروپس، ستون حباب مایع معادله تعادل جمعیت،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
At high catalyst volume fractions the Fischer-Tropsch synthesis (FTS) operated in a slurry bubble column (SBC) is driven into the mass transfer limited regime. This study utilized literature models for the gas-liquid mass transfer coefficients in a multifluid-population balance model in which the gas-phase composition was a function of bubble size. The results confirmed that mass transfer limitations occur and that the choice of mass transfer coefficient model is crucial, yielding final conversion results ranging from 45% to 92% depending on the choice of kL models. At smaller kL values the composition is highly dependent on bubble size, whilst for the largest kL values the composition is not a function of bubble size at all. The population balance modeling (PBM) allowed for explicitly keeping track of the bubble size distribution. Varying the inlet Sauter-mean diameter (SMD) resulted in a linear decrease in conversion as the inlet SMD was increased from 5â¯mm to 20â¯mm. Illustrative models for the bubble size dependency of kL were implemented, which provided additional information compared to traditional models which use (bubble size) averaged values for the liquid-phase mass transfer coefficient kL and/or the gas-liquid interfacial area a and composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 192, 31 December 2018, Pages 1138-1156
Journal: Chemical Engineering Science - Volume 192, 31 December 2018, Pages 1138-1156
نویسندگان
Camilla Berge Vik, Jannike Solsvik, Magne Hillestad, Hugo A. Jakobsen,