title: Physicochemical evolution during rice straw and coal co-pyrolysis and its effect on co-gasification reactivity.
abstract: Physicochemical evolution (i.e. pore structure variation, carbon structure change and active AAEM transformation) during rice straw (RS) and Shenfu bituminous coal (SF) co-pyrolysis was quantitatively determined in this work. Moreover, the corresponding char gasification was conducted using a thermogravimetric analyzer (TGA) and relative reactivity was proposed to quantify the co-pyrolysis impact on co-gasification reactivity. The results showed that the development of pore structure in co-pyrolyzed chars was first inhibited and then enhanced with the decrease of SF proportion. The promotion effect of co-pyrolysis on order degree of co-pyrolyzed chars gradually weakened with increasing RS proportion. Co-pyrolysis mainly enhanced active K transformation in co-pyrolyzed chars and the promotion effect was alleviated with increasing RS proportion. The inhibition effect of co-pyrolysis on co-gasification reactivity weakened with increasing RS proportion and gasification temperature, which was mainly attributed to the combination of carbon structure evolution and active AAEM transformation in co-pyrolysis.
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Juntao
authors.initials: J
authors.lastname: Wei
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Gong
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Guo
authors.affiliation: Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Lu
authors.initials: L
authors.lastname: Ding
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Fuchen
authors.initials: F
authors.lastname: Wang
authors.affiliation: Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China; 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; D002244:Carbon / Q000737:chemistry; D002245:Carbon Dioxide / Q000737:chemistry; D002606:Charcoal / Q000737:chemistry; D055598:Chemical Phenomena; D003031:Coal / Q000032:analysis*; D012275:Oryza / Q000737:chemistry*; D013696:Temperature
chemical_list: D003031:Coal; D002245:Carbon Dioxide; D002606:Charcoal; D002244:Carbon
keywords: Co-gasification; Co-pyrolysis; Physicochemical evolution; Reactivity