A novel process to recover sulfur in aqueous phase under ambient condition
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- 作者：Yu Huang ; Haoyi Chen ; Yongchun Lu ; Bonan Liu ; Huahong Shi…
- 关键词：Sulfur recovery ; Claus ; Aqueous phase ; Flue gas ; Hydrogen sulfide
- 刊名：Applied Petrochemical Research
- 出版年：2015
- 出版时间：September 2015
- 年：2015
- 卷：5
- 期：3
- 页码：207-213
- 全文大小：1,134 KB
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Haoyi Chen (1)
Yongchun Lu (1)
Bonan Liu (2)
Huahong Shi (1)
Tiancun Xiao (1) (2)
1. Guangzhou Boxenergytech Ltd, D-102 International Business Incubator, Guangzhou Development Zone, Guangzhou, People’s Republic of China
2. Inorganic Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QR, UK - 刊物主题：Catalysis; Industrial Chemistry/Chemical Engineering; Nanochemistry; Energy Technology; Nanotechnology and Microengineering;
- 出版者：Springer Berlin Heidelberg
- ISSN：2190-5533
文摘
Sulfur recovery is an important industrial process for fossil fuel clean consumption, in which H2S is firstly separated from the gas stream from the hydrodesulfurization process or gasified gas of coal or biomass. Meanwhile, almost equivalent half amount of SO2 is produced from the boiler on-site due to the power and steam generation or the fluid catalytic cracking process in a refinery. Currently, H2S is converted into elemental sulfur using Claus process, which is being used worldwide, and SO2 is removed from the flue gas using lime or lime water. The two sulfur removal technologies require lots of capital investment and operating cost. Here, we have developed a novel process for SO2 in flue gas to react with H2S from the gasified gas stream, to convert them elemental sulfur by washing the flue gas and H2S with liquid catalyst containing water stream, the sulfur in SO2 and H2S is converted into elemental sulfur and floated in the washed solution pool, which can be filtered out. Here, the pilot test results of the aqueous phase ambient temperature sulfur recovery process has been described and analyzed. The system converted more than 1000 ppm of H2S and 500-00 ppm of SO2 in the flue gas into elemental sulfur in aqueous phase at temperature below 100 °C. The flue gas was washed with our acid aqueous media, and the sulfur is formed in the aqueous acid catalyst solution and was filtered out. The sulfur powder has the same laser Raman spectra with the Claus process, with the main structure as S8 with high purity. Keywords Sulfur recovery Claus Aqueous phase Flue gas Hydrogen sulfide