Étude d’une pompe active EHD basée sur la mise en œuvre de décharges de surface pour le traitement des effluents gazeux d’origine industrielle

Abstract : The Volatile Organic Compounds (VOC) emitted in the atmosphere by various forms is considered as principal atmospheric pollutant. In order to treat a high flow of gaz with a low concentration, few efficient methods exist like the non-thermal plasma. Its low power consumption and compactness make the non-thermal plasma treatment a promising candidate. My thesis deals with the development and study of a VOC treatment device based on the surface dielectric barrier discharges which have the characteristic of producing an oriented electric wind. To do this, we have designed and optimized a chemically active plasma pump, composed of an assembly of active surfaces, capable of drawing and treating simultaneously the air polluted in VOC. At first, we had to work on the optimization of the following parameters: electrical, geometric and material of an elementary active surface. And then conceive an active channel consisting of two optimal active surfaces disposed in a mirror effect, eventually leading to the construction of a prototype plasma pump having a flow rate approximately equal to 10 Nm3/h. This original pump by its capacity of chemical treatment consists on the physical and chemical prototype of the thesis. It allowed testing the conversion of 5 different VOCs injected into air which are: ketone, methyl ethyl ketone, butyraldehyde, methyl penatanoate, methyl butyrate and evaluate the respective abatement rates, but also identifying the main by-products of degradation, using the gas chromatography coupled to the mass spectrometry.
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Massiel Zadeh. Étude d’une pompe active EHD basée sur la mise en œuvre de décharges de surface pour le traitement des effluents gazeux d’origine industrielle. Génie des procédés. Ecole Nationale Supérieure des Mines de Paris, 2014. Français. ⟨NNT : 2014ENMP0059⟩. ⟨tel-01144437⟩

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