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تحسين تصحيح لحساب معامل انتقال المادة في الأعمدة الفقاعية
A MODIFIED CORRELATION TO EVALUATE LIQUID MASS TRANSFER COEFFICIENTIN AN IMPINGING-JET TALL BUBBLE COLUMN

Author: Dr. Mohammad F. Abid
Journal: Tikrit Journal of Engineering Sciences مجلة تكريت للعلوم الهندسية ISSN: 1813162X 23127589 Year: 2006 Volume: 13 Issue: 3 Pages: 54-77
Publisher: Tikrit University جامعة تكريت

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Abstract

An impinging-jet bubble column has been installed in Al-Mansoor Co.-Baghdad for measurements of the ozone mass transfer applications in water treatment Two injectors were used to produce turbulent gas-liquid jets in the working fluid by placing them at an intersecting angle of 1200 . The impact of the two jets increased the gas-liquid mass transfer rates. Experiments are conducted at different ranges of Reynolds number for gas and liquid such that 12.8
KEY WORDS
Mass transfer, impinging-jet bubble column, water treatment

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Article
تحليل استقرارية مفاعل الطبقة المتساقطة
STABILITY ANALYSIS IN A FALLING FILM REACTOR

Author: Dr. Mohammad F. Abid
Journal: Tikrit Journal of Engineering Sciences مجلة تكريت للعلوم الهندسية ISSN: 1813162X 23127589 Year: 2008 Volume: 15 Issue: 1 Pages: 1-16
Publisher: Tikrit University جامعة تكريت

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Abstract

An industrial scale falling film reactor (FFR) using gaseous SO3/ liquid Alkylbenzene –as operating system- is analyzed for multiplicity and stability. The analysis has shown that up to 5 steady state solutions may exist. The existence of a highly multiplicity states is explained by the coupling between absorption and reaction. The system kinetic parameters have found to play an effective role on the stability behavior. An analytic solution is found for a special case of the liquid reactant in excess, this solution is performed by using eigen analysis. A mathematical procedure is also introduced to estimate the bifurcation points.

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