Co-gasification of coal and biomass: Synergy, characterization and reactivity of the residual char

被引：84

作者：

Hu, Junhao ^{[1
]}

Shao, Jingai ^{[1
,2
]}

Yang, Haiping ^{[1
]}

Lin, Guiying ^{[1
]}

Chen, Yingquan ^{[1
]}

Wang, Xianhua ^{[1
]}

Zhang, Wennan ^{[3
]}

Chen, Hanping ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Dept New Energy Sci & Engn, Sch Energy & Power Engn, Wuhan 430074, Hubei, Peoples R China

[3] Mid Sweden Univ, Dept Chem Engn, SE-85170 Sundsvall, Sweden

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 244卷

基金：

中国国家自然科学基金;

关键词：

Co-gasification; Synergy; Residual char; Structural characteristics; Gasification reactivity; STRUCTURE EVOLUTION; THERMAL-BEHAVIOR; BITUMINOUS COAL; RICE STRAW; PYROLYSIS; CARBON; BLENDS; CATALYSTS; WOOD;

D O I：

10.1016/j.biortech.2017.07.111

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

The synergy effect between coal and biomass in their co-gasification was studied in a vertical fixed bed reactor, and the physic-chemical structural characteristics and gasification reactivity of the residual char obtained from co-gasification were also investigated. The results shows that, conversion of the residual char and tar into gas is enhanced due to the synergy effect between coal and biomass. The physical structure of residual char shows more pore on coal char when more biomass is added in the co-gasification. The migration of inorganic elements between coal and biomass was found, the formation and competitive role of K2SiO3, KAlSiO4, and Ca3Al2(SiO4)(3) is a mechanism behind the synergy. The graphization degree is enhanced but size of graphite crystallite in the residual char decreases with biomass blending ratio increasing. TGA results strongly suggest the big difference in the reactivity of chars derived from coal and biomass in spite of influence from co-gasification.

引用

页码：1 / 7

页数：7

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