Coal char gasification in H₂O/CO₂: Release of alkali and alkaline earth metallic species and their effects on reactivity

详细信息    查看全文

• 作者：Yonghui Bai ; Shenghua Zhu ; Kang Luo ; Meiqi Gao ; Lunjing Yan ; Fan Li ; ^{lifan66@hotmail.com}
• 关键词：Coal char ; Gasification ; Mixed H2O/CO2 atmosphere ; Alkali and alkaline earth metallic species ; Reactivity
• 刊名：Applied Thermal Engineering
• 出版年：2017
• 出版时间：5 February 2017
• 年：2017
• 卷：112
• 期：Complete
• 页码：156-163
• 全文大小：1614 K
• 卷排序：112

文摘

Release of Na, K, Ca and their effects on char-CO2/H2O gasification are revealed. Release of Na and K is insensitive to the change in gasification atmosphere. Ca compounds in char maintain a better dispersion in the presence of H2O. CO2 and H2O atmospheres favor the formation of micropores and mesopores respectively. Water-soluble Na and K species show a better catalytic activity in the gasified char.