Journal of Chemical Engineering & Process Technology
Open Access
ISSN: 2157-7048
+44-20-4587-4809
ISSN: 2157-7048
+44-20-4587-4809
El-Gayar DA
Faculty of Engineering,
Alexandria
Egypt
Research Article
Effect of Surface Roughness on the Rate of Mass Transfer at a Vertical
Cylinder Under Swirl Flow in Relation to Electrochemical and Catalytic
Reactor Design
Author(s): Mustafa SA, El-Gayar DA and Sedahmed GHMustafa SA, El-Gayar DA and Sedahmed GH
In order to enhance the rate of production of catalytic and electrochemical annular reactors used to conduct diffusion controlled reactions the effect of surface roughness on the rate of mass transfer at the inner cylinder of the annulus was studied under swirl flow. The effect of the following parameters on the rate of mass transfer was studied by the electrochemical technique: solution velocity, degree of roughness, physical properties of the solution, height of the inner cylinder and effect of drag reducing polymers. Roughness was made by cutting longitudinal V grooves in the inner cylinder transverse to swirl flow. The mass transfer data at the rough cylinder were correlated by the dimensionless equation:
Sh=0.435 Sc0.328 Re0.86 (L/de)-0.53 (e/de)0.45
Drag reducing polymers were found to decrease the rate of mass transfer by an amount ranging from 5 to 23%. Importance of the pr.. View More»
DOI:
10.4172/2157-7048.1000319