Interfacial area in a reactor with helicoidal flow for the two-phase gas-liquid system [An article from: Chemical Engineering Journal]

This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Interfacial area was measured in a helicoidal reactor for the two-phase gas-liquid flow. Measurements were accomplished using the method of oxygen chemical absorption in alkaline solutions of Na"2S"2O"4. The process parameters were varied within the following ranges: rotational speed of impeller from 0 to 2900rpm; liquid mass flux from 2.7 to 100kg/(m^2s); volumetric flow ratio of gas and liquid from 0.125 to 1; ratio of impeller diameter to the outer reactor diameter from 0.54 to 0.92. Large values of the interfacial area were found. It was established that they depend mainly on the rotational speed of the rotor and to much less extent on the axial flow velocity. A correlation between changes in the interfacial area and changes in the flow structure within the reactor was also observed.