Gas Absorption and Particle Removal Performance of Wet Parallel-membrane Array System
In this study, the gas absorption and particle removal performance of wet parallel-membrane array systems were investigated. SO 2 and oil mist were used as the target gas and particles, respectively. To evaluate the gas absorption performance of the wet membrane, we compared it with a packed-bed scr...
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Veröffentlicht in: | IEEE transactions on industry applications 2023-05, Vol.59 (3), p.1-11 |
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Sprache: | eng |
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Zusammenfassung: | In this study, the gas absorption and particle removal performance of wet parallel-membrane array systems were investigated. SO 2 and oil mist were used as the target gas and particles, respectively. To evaluate the gas absorption performance of the wet membrane, we compared it with a packed-bed scrubber at the same flow rate. Unlike a typical packed-bed scrubber, the membrane scrubber has a high absorption rate and easily absorbs water so that the liquid flows dynamically across the entire membrane. Therefore, the membrane exhibited a higher mass transfer rate than the packed bed. Additionally, the pressure drop was extremely low because the flow was not blocked. We evaluated the particle removal performance of a wet two-stage electrostatic precipitator (ESP) with a wet parallel-membrane array collection stage. A PM 2.5 removal efficiency higher than 90% at a flow velocity of 1 m/s was achieved using the proposed system. In addition, the wet-membrane-based two-stage ESP was easy to design according to the existing ESP design theory, Cochet's charging theory, and Deutsch equation. Also, our new wet-membrane-based two-stage ESP can remove acid gas and particles simultaneously. Therefore, this membrane can be a promising material for air pollution control devices, such as scrubbers and ESPs. |
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ISSN: | 0093-9994 1939-9367 |
DOI: | 10.1109/TIA.2023.3235749 |