Destruction of H₂S Gas with a Combined Plasma Photolysis (CPP) Reactor

Abstract

A combined plasma photolysis (CPP) reactor that utilized the dielectric barrier discharge (DBD) plasma together with DBD-driven KrI * excimer ultraviolet emission was applied to the decomposition of H2S gas. The effects of applied voltage, input current, gas flow velocity, original concentration as well as the ratio of Kr/I2 mixture on H2S removal efficiency were investigated. Gas streams containing H2S were separately treated with single DBD and CPP reactor under the same conditions. In comparison to DBD, CPP could greatly enhance the H2S removal efficiency at the same applied voltage, inlet gas concentration and gas flow velocity. In addition, the reaction mechanism was also discussed in this paper.

Design of a MT-DBD reactor for H2S control

“…2 ), absolute removal amount (ARA) and energy yield (Ey) were defined in our previous research [17]. Figure 4 shows that the removal efficiency of H 2 S and Ey enhanced as SED increased in the MT-DBD reactor.…”

“…According to the processing requirements, we can easily change the layers of quartz tubes arranged in a row to achieve higher efficiency. Comparing with the CS-DBD reactor previously used in our group [17,18], this new MT-DBD reactor has a high exploitation of space, lower system resistance, stronger adaptability with no electrode corrosion and lower energy consumption.…”

Efficient new process for the desulfurization of mixtures of air and hydrogen sulfide via a dielectric barrier discharge plasma

“…9 It was found to be more effective at high temperatures, 37 but a sufficient efficiency was gained only in combination with other systems. [38][39][40] DBD discharges have been shown to be able to oxidize H 2 S towards H 2 SO 4 , 41 and to induce reactions with surfaces like InP. 42 The use of a packed-bed DBD reactor, however, only enhanced the dissociation via the gases' residence time.…”

Decomposition of dioxin-like components in a DBD reactor combined with Hg/Ar electrodeless ultraviolet

“…In this paper, we called this combined process as DBD-EDUV system. This new combined reactor has been verified to achieve effective removal of several pollutions such as H 2 S [35,36], CS 2 [37] and butyl acetate [38]. However, as far as we know, the research on abatement of dioxin-like components by DBD-EDUV process is limited.…”