Chemical thermodynamics analysis for in-situ gasification chemical looping combustion of lignite with phosphogypsum for syngas

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• 作者：Jie Yang ; Liping Ma ; ^{LipingMa_KMUST@163.com} ; Jianxiao Tang ; Hongpan Liu ; Bin Zhu ; Yan Lian ; Xiaojing Cui
• 关键词：Syngas ; Phosphogypsum ; In-situ gasification chemical looping combustion (IG-CLC) ; Thermodynamics analysis ; Lower heating value (LHV) ; Cold gas efficiency
• 刊名：Applied Thermal Engineering
• 出版年：2017
• 出版时间：5 February 2017
• 年：2017
• 卷：112
• 期：Complete
• 页码：516-522
• 全文大小：1801 K
• 卷排序：112

文摘

The product of syngas mainly came from 〈CaSO4 + 4C → CaS + 4CO〉 solid-solid reaction and 〈C + H2O(g) → CO + H2〉 gas-solid reaction. Lower heating value (LHV) and cold gas efficiency were higher than 55000.00 kJ/Nm3 and 63.00%, respectively. Optimizing operation conditions were obtained using Factsage 6.4. Theory and experiment showed that PG is an excellent oxygen carrier for syngas production during lignite’s IG-CLC process.