title: Study on CO2 gasification reactivity and physical characteristics of biomass, petroleum coke and coal chars.
abstract: 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 η 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.
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Huo
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China. Electronic address: zzj@ecust.edu.cn.
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Xueli
authors.initials: X
authors.lastname: Chen
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Dai
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China. Electronic address: gsyu@ecust.edu.cn.
authors.forename: Guangsuo
authors.initials: G
authors.lastname: Yu
mesh_terms: D018533:Biomass; D002245:Carbon Dioxide / Q000737:chemistry*; D002606:Charcoal / Q000737:chemistry*; D003077:Coke / Q000032:analysis*; D003460:Crystallization; D004058:Diffusion; D007700:Kinetics; D012275:Oryza / Q000737:chemistry; D010316:Particle Size; D010578:Petroleum / Q000032:analysis*; D016062:Porosity; D013696:Temperature; D014934:Wood / Q000737:chemistry
chemical_list: D003077:Coke; D010578:Petroleum; D002245:Carbon Dioxide; D002606:Charcoal
keywords: Biomass; CO(2) gasification; Char; Physical structures; Pore diffusion