General model of a foam bed reactor

Bhaskarwar, Ashok N. ; Desai, Dilip ; Kumar, R. (1990) General model of a foam bed reactor Chemical Engineering Science, 45 (5). pp. 1151-1159. ISSN 0009-2509

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A general model of a foam bed reactor has been developed which rigorously accounts for the extent of gas absorption with chemical reaction occurring in both the storage and foam sections. Its applicability extends to a wide spectrum of reaction velocities. The possibilities of the predominance of the bulk-liquid reaction in the storage section or the absorption with reaction in the foam section can be handled as merely special cases of the general analysis. The importance of foam for carrying out a particular gas-liquid reaction is characterised by a criterion in terms of the fractional rate of reaction in the foam section. Trends of variations in the concentrations of dissolved free A, solute B, and gas-phase A with time of operation of the reactor are presented. The nature of the variation in the fractional rate of reaction in the foam section with time, at different reaction velocities, and the effect of the liquid flow rate (across the storage section) on the transience are also illustrated. Finally, the predictions of the general model have been validated using the available experimental data on the oxidation of sodium sulphide in a foam bed reactor. The agreement between the experimental and the present theoretical information is fairly good, apart from being more insightful than all the previous models of this reactor.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:18450
Deposited On:17 Nov 2010 09:07
Last Modified:04 Jun 2011 10:28

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