Reactivities of Shenfu Chars Toward Gasification with Carbon Dioxide  

作　　者：ZHANG Jia-wei ZONG Zhi-min WANG Tao-xia XIE Rui-lun DING Ming-jie CAI Ke-ying HUANG Yao-guo GAO Jin-sheng WU You-qing WEI Xian-yong 

机构地区：[1]School of Chemical Engineering, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China [2]Luohe Occupation Technical College, Luohe, Henan 462000, China [3]College of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China

出　　处：《Journal of China University of Mining and Technology》2007年第2期197-200,共4页中国矿业大学学报（英文版）

基　　金：Projects 2004CB217704 supported by the Special Fund for Major State Basic Research Project, 104031 by the Key Project of Chinese Ministry of Education ;JHB05-33 by the Program of the Universities in Jiangsu Province for Development of High-Tech Industries

摘　　要：Five Shenfu char samples were prepared from Shenfu raw coal at different temperatures （950, 1100, 1200, 1300 and 1400℃） using a muffle furnace. Demineralization of the char samples was performed by treating them with 10% nitric acid for 10 min in a CEM Discover microwave reactor. The gasification of the chars, and corresponding demineralized chars, in a carbon dioxide （CO2） atmosphere was conducted in a Netzsch STA 409Cl31F tempera- ture-programmed thermogravimetry apparatus. The effects of charring temperature and demineralization on the gasification reactivity of chars were systematically investigated. The results show that a char formed at a lower temperature is more reactive except for demineralized char formed at 1100℃, which is less reactive than char formed at 1200℃. Demineralization decreases the char reactivities toward gasification with CO2 to a small extent.Five Shenfu char samples were prepared from Shenfu raw coal at different temperatures (950,1100,1200,1300 and 1400 ℃) using a muffle furnace. Demineralization of the char samples was performed by treating them with 10% nitric acid for 10 min in a CEM Discover microwave reactor. The gasification of the chars,and corresponding demineralized chars,in a carbon dioxide (CO2) atmosphere was conducted in a Netzsch STA 409C131F tempera-ture-programmed thermogravimetry apparatus. The effects of charring temperature and demineralization on the gasi-fication reactivity of chars were systematically investigated. The results show that a char formed at a lower tempera-ture is more reactive except for demineralized char formed at 1100 ℃,which is less reactive than char formed at 1200 ℃. Demineralization decreases the char reactivities toward gasification with CO2 to a small extent.

关 键 词：DEMINERALIZATION temperature-programmed thermogravimetry reactivity 

分 类 号：TQ546[化学工程—煤化学工程]