Impact of H2S Impurity on Carbon Dioxide Hydrate Formation Kinetics in Fixed Bed Arrangements

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• 作者：Asheesh Kumar ; Tushar Sakpal ; Gaurav Bhattacharjee ; Anupam Kumar ; Rajnish Kumar
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：July 27, 2016
• 年：2016
• 卷：55
• 期：29
• 页码：7964-7972
• 全文大小：557K
• 年卷期：0
• ISSN：1520-5045

文摘

In the present work, a combination of silica sand and metallic sheets as a fixed bed media was used for carbon dioxide hydrate formation studies. Two metallic sheets, aluminum and brass, were incorporated into the fixed bed of silica sand to enhance heat transfer properties of the bed. The results obtained from this arrangement of metal sheets were compared with those obtained with a pure silica sand system. Both brass and aluminum systems were found to be good candidates to enhance gas hydrate formation kinetics compared to simply a sand system. Production of fuel gas from coal often contains a toxic gas, hydrogen sulfide (H₂S). For the first time, the effect of H₂S on the formation kinetics of CO₂ + H₂ + H₂S hydrates has been studied. It was observed that the presence of H₂S does not affect the hydrate formation kinetics and total gas uptake in the presence of H₂S is either as good as CO₂ + H₂ hydrate or better. However, H₂S impurity in the fuel gas mixture shows a corrosive effect on silica sand media.