Continuous operation characteristics of chemical looping hydrogen production system

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• 作者：Won Chul Cho ; Do Yeon Lee ; Myung Won Seo ; Sang Done Kim ; KyoungSoo Kang ; Ki Kwang Bae ; Change Hee Kim ; SeongUk Jeong ; Chu Sik Park
• 关键词：Three-reactor chemical looping (TRCL) ; Hydrogen ; CO2 separation ; Iron oxide (Fe2O3) ; Redox reaction
• 刊名：Applied Energy
• 出版年：January, 2014
• 年：2014
• 卷：113
• 期：Complete
• 页码：1667-1674
• 全文大小：1673 K

文摘

Three-reactor chemical looping (TRCL) is a hydrogen and electricity production technology with inherent separation of carbon dioxide by use of the iron-based oxygen carrier particles. In this study, an integrated continuous operation test unit (300 W_th) using 20 wt% Fe₂O₃/ZrO₂as an oxygen carrier was successfully operated over 13 h. The average CH₄ conversion was 94.15% in a fuel reactor in a moving bed mode. Nearly pure hydrogen (99.95%) was obtained from a steam reactor (SR). The steam conversion to H₂ was around 63% of the thermodynamic limit in the SR. The hydrogen containing CO was observed from the SR when the carbon deposited particles were introduced into the SR. During the continuous operation, the oxygen carrier particles maintained its physical and chemical properties with high durability in the TRCL system.