Paper Titles
Influence of the Addition of Rare-Earth Elements on the Sintering of Cemented Carbide
p.347
Fabrication of Sintered Compact from Aluminum Powder Coated with Tin Deposits by Magnetron DC Sputtering
p.353
Sintering of AISI M3:2 High Speed Steel – Part II
p.358
Laser Sintering of Greens Compacts of MoSi2
p.364
Effect of Operational Parameters in the Droplet Size of a Venturi Scrubber with Multi-Orifice Injection
p.370
Computational Fluid Dynamics Applied to Bradley Hydrocyclones
p.376
The Use of CFD Technique in the Study of the Spouted Bed
p.382
Preparation and Characterization of Zirconia-Yttria/Zirconia-Magnesia Composites
p.389
Synthesis of Ceramic Powders Based on Manganese, Cobalt and Nickel Oxides
p.395

Effect of Operational Parameters in the Droplet Size of a Venturi Scrubber with Multi-Orifice Injection

Article Preview

Abstract:

The Venturi scrubber is used for removing particulate matter from gaseous effluents and finds a large application in industry. The size of the droplet is of fundamental importance to the performance of the equipment. This work aims at studying the effect of some design parameters, namely liquid flow rate and liquid injection system in the droplet size and to correlate this with collection efficiency. A laser diffraction technique was used in order to measure droplet size in situ in a rectangular Venturi scrubber, with liquid injected through 1mm diameter orifices on the throat walls. Liquid flow rates of 600 and 900 ml/min and number of orifices varying from 1 to 5 were used in the experiments. The throat gas velocity was kept at 69.3 m/s. It was found that all these variables significantly affected droplet size. The results of droplet size were compared with the particle capture (collection) efficiency measured in the same experimental conditions. It was observed that the collection efficiency was affected by the liquid atomizing conditions and by the droplet distribution in the Venturi throat.

You might also be interested in these eBooks
Advanced Powder Technology V View Preview

Info:

Periodical:

Materials Science Forum (Volumes 530-531)

Pages:

370-375

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.530-531.370

Citation:

Cite this paper

Online since:

November 2006

Authors:

Vádila Giovana Guerra, A.P.R.A. Ribeiro, José Antônio Silveira Gonçalves, José Renato Coury

Keywords:

Atomization, Droplet Size, Particle Capture, Scrubbers

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] S. Calvert, J. Goldshmid, D. Leith, D. Mehta, Scrubber Handbook1, NTIS Publication No 213-016 (1972).

Google Scholar

[2] S. Nukiyama, Y. Tanasawa, Transactions of the Society of Mechanical Engineers - Japan 4(14) (1938), pp.86-93.

Google Scholar

[3] R.H. Boll, L.R. Flais, P.W. Maurer, W.L. Thompson, Journal of the Air Pollution Control Association 24 (1974), pp.934-938.

Google Scholar

[4] J.A.S. Gonçalves, M.A. Martins Costa, P.R. Henrique, J.R. Coury, Journal of Hazardous Materials 97 (1-3) (2003), pp.267-279.

Google Scholar

[5] S. Viswanathan, C.C. St. Pierre, A.W. Gnyp, Canadian Journal of Chemical Engineering 61(1983), pp.504-508.

Google Scholar

[6] J.A.S. Gonçalves, Aspectos da Modelagem Matemática de Lavadores Venturi. São Carlos 2000. Tese (Doutorado). DEQ/UFSCar.

Google Scholar

[7] A.P.R.A. Ribeiro, Estudo da Eficiência de Coleta em um Lavador Venturi com Injeção de Líquido por Multi-Orifícios, São Carlos 2005. Tese (Doutorado). DEQ/UFSCar.

Google Scholar

[8] TEIXEIRA, J.C.F.; AZZOPARDI, B. J; BOTT, T.R. in: The effect of inserts on drop sizes in Vertical annular flow, Sept. 14-16. V. II, 1988. Proceedings of the 2 nd UK National Heat Transfer Conference, 1988, p.121.

Google Scholar

[9] D. Fernandez Alonso, J.A.S. Gonçalves, B.J. Azzopardi, J.R. Coury, Chemical Engineering Science 56 (2001), pp.4901-4911.

DOI: 10.1016/s0009-2509(01)00140-3

Google Scholar