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Conversion of Carbonyl Sulfide Using a Low-Temperature Discharge Approach

Category: Articles

Volume: 7 | Issue: 2 | Pages: 251-259
DOI: 10.4209/aaqr.2007.03.0013
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Cheng-Hsien Tsai 1, Ping-Szu Tsai1, Chih-Ju G. Jou2, Wei-Tung Liao3

  • 1 Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, 415 Chien-Kung Road, Kaohsiung 807, Taiwan
  • 2 Department of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 811, Taiwan
  • 3 Department of Chemical and Material Engineering, Southern Taiwan University of Technology, Tainan 710, Taiwan

Abstract

Carbonyl sulfide (COS) are usually yielded from the petrifaction industry or steel-making plants. In this study, a low-temperature radio-frequency (RF) plasma approach was used to destruct COS for removing sulfur. The results showed that at an inlet O2/COS molar ratio of 3, the removal efficiency of COS reached 98.4% at 20 W and 4000 N/m2, with the major product being SO2 with small amounts of sulfur deposition. The removal efficiency of COS was lower in the H2-containing condition than in the O2-containg one. However, when H2 was added into the COS/N2 mixtures, the products, including major elemental sulfur with CS2 as a minor product, were easily collected and recovered.

Keywords

Carbonyl sulfide RF plasma Destruction Acid rain Sulfur


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