Experimental and Theoretical Investigation of Droplet Dispersion in Venturi Scrubbers with Axial Liquid Injection

• Published in: Chemical engineering & technology Vol. 32; no. 5; pp. 798 - 804
• Main Authors: Talaie, M. R., Mokhtarian, N., Talaei, A., Karimikhosroabadi, M., Sadeghi, F.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.05.2009; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Applied sciences; Chemical engineering; Droplet size distribution; Exact sciences and technology; Liquid dispersion; Mathematical modeling; Peclet number; Venturi scrubber; Venturi scrubber; Peclet number; Particle size; Venturi; Samplings; Droplet; Modeling; Dispersion; Operating conditions; Particle size distribution; Scrubbers; Sampling; Mathematical model
• ISSN: 0930-7516; 1521-4125
• DOI: 10.1002/ceat.200800327

Droplet dispersion in a Venturi scrubber with axial liquid injection was investigated both experimentally and theoretically. The main objective of this study was to develop a mathematical model to predict droplet dispersion in a Venturi scrubber with axial liquid injection. The effects of the Peclet number and droplet size distribution on droplet dispersion were studied using the developed model. Sampling of the droplets was carried out, isokinetically, in 16 positions at the end of the throat section. The experimental data were used to find the parameters of the developed model, such as the Peclet number. From the results of this study, it was found that the Peclet number was not constant across the cross section of the scrubber channel. In order to achieve a better agreement between the results of the model and the experimental data, it was required to consider Peclet number variations across the Venturi channel. It was also revealed that the parameter representing the width of the Rosin‐Rammler distribution of droplet size could not be considered constant and it was influenced significantly by the operating parameters such as liquid flow rate and gas velocity. In a Venturi scrubber the droplet dispersion is influenced not only by turbulence intensity, but also the liquid injection method. Here, the experimental data of the Venturi scrubber with axial liquid injection are used to analyze liquid dispersion. Thus, the results obtained about the optimum value of the Peclet number are more reliable.