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Gas pollutants removal in a single- and two-stage ejector-venturi scrubber |
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| Authors: | Gamisans Xavier Sarrà Montserrrat Lafuente F Javier |
| Affiliation: | a Mining Engineering and Natural Resources Department, Universitat Politècnica de Catalunya, Bases de Manresa 61-73, 08240 Manresa, Barcelona, Spain b Chemical Engineering Department, Universitat Autònoma de Barcelona, Edificio C, 08193 Bellaterra, Barcelona, Spain |
| Abstract: | The absorption of SO2 and NH3 from the flue gas into NaOH and H2SO4 solutions, respectively has been studied using an industrial scale ejector–venturi scrubber. A statistical methodology is presented to characterise the performance of the scrubber by varying several factors such as gas pollutant concentration, air flowrate and absorbing solution flowrate. Some types of venturi tube constructions were assessed, including the use of a two-stage venturi tube. The results showed a strong influence of the liquid scrubbing flowrate on pollutant removal efficiency. The initial pollutant concentration and the gas flowrate had a slight influence. The use of a two-stage venturi tube considerably improved the absorption efficiency, although it increased energy consumption. The results of this study will be applicable to the optimal design of venturi-based absorbers for gaseous pollution control or chemical reactors. |
| Keywords: | Venturi scrubber Absorption Sulphur dioxide Ammonia Statistical modelling |
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