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Plasma dissociation of hydrogen sulfide
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Plasma dissociation of hydrogen sulfide

Kirill A. Gutsol
Master of Science (M.S.), Drexel University
Sep 2012
DOI:
https://doi.org/10.17918/etd-4035
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Abstract

Hydrogen sulfide Plasma discharge Mechanical Engineering
Plasma dissociation of hydrogen sulfide has been studied by kinetic and thermodynamic modeling and experimentally in four different discharges: AC corona, dielectric barrier, streamer, and contracted glow discharge. The performance of corona discharge and DBD was studied in the initial gas temperature range of 300 - 1200 K. A robust reactor was created to perform the above studies in pure H₂S with high degree of reproducibly. A specific energy requirement (SER) was calculated as function of energy input for each type of the discharge and compared with earlier experimental results and modeling. The results showed that discharges at high E/n and low specific energy release (corona, dielectric barrier, and streamer) perform significantly worse than contracted glow discharge at low E/n where specific energy release was high and gas temperature was elevated. The SER for non-thermal dissociation was 12 - 14 eV/molec and went down to 2.4 eV/molec in the case of the glow discharge with elevated temperature. Experiments confirmed that an electrical discharge in H₂S allows obtain SER close to the predicted by thermodynamic equilibrium modeling if the discharge has gas temperature that is high enough. Further reduction of SER in a plug flow reactor is not possible because of the absence of chemical chain processes and energy recovery mechanisms.

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