title: Comparative study on combined co-pyrolysis/gasification of walnut shell and bituminous coal by conventional and congruent-mass thermogravimetric analysis (TGA) methods.
abstract: Combined co-pyrolysis/gasification of bituminous coal (BC) and walnut shell (WS) are comparatively studied with both conventional and congruent-mass thermogravimertric analysis (TGA) methods. The results indicate that BC and WS exhibit additivity in the co-pyrolysis step. However, the gasification reactivity of chars in subsequent gasification step exhibits remarkable sample-mass dependence, which causes the illusions in synergy and inhibition effects when conventional TGA tests are conducted. A congruent-mass TGA method has been developed to overcome the limitations of the conventional TGA mode. One of the advantages of this method is that it can reduce to a minimum the effect of sample mass on reactivity. Thus, the degree of synergy or inhibition can be directly estimated from the deviation of the experimental TG curves between the two separated and blended samples. We recommend this method in studying the co-processing behavior between coal and biomass.
authors: School of Energy and Power Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City 116024, China. Electronic address: zhang.yan@dlut.edu.cn.
authors: Yan
authors: Y
authors: Zhang
authors: School of Energy and Power Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City 116024, China.
authors: Di
authors: D
authors: Fan
authors: School of Energy and Power Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City 116024, China.
authors: Yan
authors: Y
authors: Zheng
mesh_terms: D018533:Biomass; D003031:Coal / Q000032:analysis*; D005740:Gases; D007220:Industrial Waste; D031324:Juglans / Q000737:chemistry*; D007700:Kinetics; D013818:Thermogravimetry / Q000379:methods*
chemical_list: D003031:Coal; D005740:Gases; D007220:Industrial Waste
keywords: Biomass; Coal; Gasification; Pyrolysis; Synergy