estudio y caracterización de un plasma de microondas a presión ...

Destrucción de VOCs con plasma de Aire
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The coaxial line (nozzle) was used to supply both the main gas and the
contaminants, and the end of the line was located at the centre of the reactor. As shown
in Figure 5.1, the gas used to control and maintain the atmosphere inside the reactor was
introduced through the waveguide.
The plasma flame expansion zone was coupled to a reactor developed by our
group [24]. The tip of the torch (nozzle) extended into the reaction chamber of the
plasma reactor, which was located in the lower section and was furnished with two
windows to facilitate spectroscopic analyses. The recombination chamber, which
constituted the upper section, was furnished with a central hole for releasing output gases
and two additional holes for sampling gases from the reactor. In this area, the waste
gases were cooled and ionised species recombined to form new compounds or the
original molecule. Furthermore, representative samples of the output gases were
collected at this location.
The plasma system was coupled to a reactor to ensure the isolation of
contaminants, increase the stability of the plasma and improve the coupling of
microwave energy. In addition, the use of a reactor controlled the production of reactive
intermediates.
Figure 5.1: Schematic diagram of the reactor and the proposed VOC destruction system.