文献类型：期刊文献

英文题名：Study on CO2 gasification reactivity and physical characteristics of biomass, petroleum coke and coal chars

作者：Huo, Wei[1];Zhou, Zhijie[1];Chen, Xueli[1];Dai, Zhenghua[1];Yu, Guangsuo[1]

机构：[1]E China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：159

起止页码：143

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20141217493064);WOS:【SCI-EXPANDED(收录号:WOS:000335393500020)】；

基金：This work has been partially supported by the National High Technology Research and Development of China (863 program, 2012AA053101; 2011AA050106), the National Key State Basic Research Development Program of China (973Program, 2010CB227004) and the National Natural Science Foundation of China (21376081).

语种：英文

外文关键词：CO2 gasification; Biomass; Char; Physical structures; Pore diffusion

摘要：Gasification reactivities of six different carbonaceous material chars with CO2 were determined by a Thermogravimetric Analyzer (TGA). Gasification reactivities of biomass chars are higher than those of coke and coal chars. In addition, physical structures and chemical components of these chars were systematically tested. It is found that the crystalline structure is an important factor to evaluate gasification reactivities of different chars and the crystalline structures of biomass chars are less order than those of coke and coal chars. Moreover, initial gasification rates of these chars were measured at high temperatures and with relatively large particle sizes. The method of calculating the effectiveness factor g was used to quantify the effect of pore diffusion on gasification. The results show that differences in pore diffusion effects among gasification with various chars are prominent and can be attributed to different intrinsic gasification reactivities and physical characteristics of different chars. (c) 2014 Elsevier Ltd. All rights reserved.