NDLI: Simultaneous Removal of H$_{2}$S and Dust in the Tail Gas by DC Corona Plasma

Content Provider	Springer Nature Link
Author	Xueqian, Wang Ke, Xu Yixing, Ma Ping, Ning Chen, Cheng Langlang, Wang Jinhuan, Cheng
Copyright Year	2016
Abstract	The removal of hydrogen sulfide and dust simultaneously by the DC corona discharge plasma with a wire-cylinder reactor was studied at atmospheric pressure and room temperature. The outlet gases were analyzed by Fourier Transform Infrared. Chemical compositions of the dust collected from ground electrode were analyzed by X-ray fluorescence. The results showed that the DC corona discharge is effective in removing H$_{2}$S and dust simultaneously. The best H$_{2}$S conversion was gained with the 2 cm discharge gap. The lower inlet H$_{2}$S concentration, the higher conversion efficiency was gained at any specific input energy (SIE), while the energy yield was on the contrary. The removal efficiency of H$_{2}$S decreased gradually as oxygen concentration increased, which means that the H$_{2}$S decomposition mainly depends on direct electron collisions or short-living species, such as$^{·}$O, $^{·}$OH radicals in the non-thermal plasma. At the initial stage, the conversion efficiency of H$_{2}$S increased with the increasing of relative humidity, but later decreased while the relative humidity keep increasing with the same SIE. Existing of dust can not only reduce the energy consumption of H$_{2}$S conversion and improve the removal efficiency, but also inhibit the yield of SO$_{2}$ for it can further react with some compounds in the dust. With the discharge gap of 2 cm, inlet H$_{2}$S concentration of 2400 ppm, O$_{2}$ Of 0.5 %, relative humidity of 41 %, dust content of 4000 ± 5 % mg/m$^{3}$ and SIE of 600 J/L, the H$_{2}$S conversion reached 98.8 %, and the dust removal efficiency was close to 100 %.
Starting Page	1545
Ending Page	1558
Page Count	14
File Format	PDF
ISSN	02724324
Journal	Plasma Chemistry and Plasma Processing
Volume Number	36
Issue Number	6
e-ISSN	15728986
Language	English
Publisher	Springer US
Publisher Date	2016-09-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogen sulfide Corona plasma Dust Simultaneous removal Inorganic Chemistry Mechanics Characterization and Evaluation of Materials Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Condensed Matter Physics Chemical Engineering

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