The Absorption Breakthrough Characteristics of Hydrogen Chloride Gas Mixture on Potassium-Based Solid Sorbent at High Temperature and High Pressure

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• 作者：Jae-Young Kim ; Young Cheol Park ; Sung-Ho Jo ; Ho-Jung Ryu ; Jeom-In Baek ; Jong-Ho Moon
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：March 17, 2016
• 年：2016
• 卷：30
• 期：3
• 页码：2268-2275
• 全文大小：447K
• ISSN：1520-5029

文摘

In this study, the hydrogen chloride gas mixture absorption breakthrough behaviors of potassium (K)-based solid sorbents (K₂CO₃/Al₂O₃, KEPCO-RI, Korea) were studied with varying inlet HCl concentration (175–700 ppmv), temperature (200–500 °C), and pressure (1–20 bar) in a fixed-bed reactor (15 cm tall bed with 0.5 cm i.d.). The sorption capacity increases with increasing temperature and increasing pressure, whereas it was not affected by the inlet concentration. KCl crystals are formed on the sorbent surface when K⁺ ions from the K₂CO₃/Al₂O₃ sorbent are reacted with the Cl^– ion from HCl. Its optical, physical, and chemical characterizations were examined by SEM, EDAX, BET, TGA, and XRD before and after the breakthrough tests. The main purpose of this study is to provide basic information of HCl sorption characteristics on K₂CO₃/Al₂O₃ solid sorbents for developing a high temperature and high pressure halogenide halide removal process.