| Evaluation of the models available for the prediction of pressure drop in venturi scrubbers. | |
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MedLine Citation:
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PMID: 11118688 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The major running cost derived from the operation of venturi scrubbers is pressure drop. In the present study, the predictions of different models are compared to experimental data from venturi scrubbers of different sizes (throat diameter from 1.9 to 16cm), geometries, operating variables and liquid injection arrangements. As a result, it is concluded that most of the models must be used with caution. Much attention must be paid to the validity of the assumptions employed in the mathematical models. The equations proposed by Calvert [Scrubbing, Air Pollution, 3rd Edition, Vol. IV, Academic Press, New York, 1982], Yung et al. [JAPCA 27 (1977) 348] or Hesketh [Atomization and cloud behaviour in wet scrubbers, in: Proceedings of the US-USSR Symposium Control Fine Particulate Emissions 1974, San Francisco, 15-18 January 1974] produce good results only in very specific situations. The model proposed by Boll [Ind. Eng. Chem. Fundam. 12 (1973) 40] is simple, easy to compute and agrees reasonably well with the experimental data. Unfortunately, it cannot predict the effect of different liquid injection arrangements. The model by Azzopardi and coworkers [Filtr. Sep. 21 (1984) 196; Trans. IchemE. 69B (1991) 237; Chem Eng. J. 67 (1997) 9] was the only one to give good predictions for all the range of variables studied. On the other hand, this model is not simple and requires from the engineer an additional effort in terms of computation. In order to apply this model to the rectangular geometry, the concept of hydraulic equivalent diameter was used. |
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Authors:
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J A Gonçalves; D F Alonso; M A Costa; B J Azzopardi; J R Coury |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of hazardous materials Volume: 81 ISSN: 0304-3894 ISO Abbreviation: J. Hazard. Mater. Publication Date: 2001 Jan |
Date Detail:
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Created Date: 2001-02-28 Completed Date: 2001-03-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9422688 Medline TA: J Hazard Mater Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 123-40 Citation Subset: IM |
Affiliation:
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Departamento de Engenharia Química, Universidade Federal de São Carlos, Via Washington Luiz, Km. 235, 13565-905 SP, São Carlos, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aerosols Air Pollution / prevention & control* Kinetics Models, Theoretical* Pressure |
| Chemical | |
Reg. No./Substance:
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0/Aerosols |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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