Effect of CaCO₃ addition on ash sintering behaviour during K₂CO₃ catalysed steam gasification of a Chinese lignite

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• 作者：Jiguang Zhang^a ; ^b ; ^d ; Jianbo Li^a ; Yandong Mao^c ; Jicheng Bi^c ; Mingming Zhu^a ; ^{mingming.zhu@uwa.edu.au} ; Zhezi Zhang^a ; Li Zhang^d ; Dongke Zhang^a
• 关键词：Ash sintering temperature ; Calcium carbonate ; Catalytic gasification ; Fluxing minerals ; Lignite ; Potassium carbonate
• 刊名：Applied Thermal Engineering
• 出版年：2017
• 出版时间：25 January 2017
• 年：2017
• 卷：111
• 期：Complete
• 页码：503-509
• 全文大小：921 K
• 卷排序：111

文摘

K2CO3 decreased ash sintering temperature and enhanced ash melting in gasification. CaCO3 addition enhanced ash melting and lowered ash sintering temperatures. CaCO3 reacted with SiO2 to form fluxing phases and amorphous materials. CaCO3 addition inhibited the potassium aluminium silicate formation. CaCO3 addition preserved the catalytic activity of potassium.