Unconventional biomass fuels for steam gasification: Kinetic analysis and effect of ash composition on reactivity

被引：56

作者：

Gonzalez-Vazquez, M. P. ^{[1
]}

Garcia, R. ^{[1
]}

Gil, M. V. ^{[1
]}

Pevida, C. ^{[1
]}

Rubiera, F. ^{[1
]}

机构：

[1] INCAR CSIC, Inst Nacl Carbon, C Francisco Pintado Fe 26, Oviedo 33011, Spain

来源：

ENERGY | 2018年 / 155卷

关键词：

Biomass; Steam gasification; TGA; Kinetic parameters; Ash inorganic elements; FLUIDIZED-BED REACTOR; CHAR GASIFICATION; COAL CHARS; LIGNOCELLULOSIC BIOMASS; INORGANIC ELEMENTS; SOLID REACTIONS; BLEND CHARS; MODEL; TEMPERATURE; COMBUSTION;

D O I：

10.1016/j.energy.2018.04.188

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Twelve commercial and unconventional biomass fuels were evaluated in steam gasification; these include samples of hard (wood, almond, olive and pine kernel wastes) and soft (miscanthus, switchgrass, coffee, cocoa and grape wastes) biomass. Gasification tests at 700-1000 degrees C of biomass chars obtained from a bubbling fluidized bed reactor were performed in a TG analyzer. Steam gasification kinetics were extensively analyzed: an index of key parameters for the twelve biomasses and the correlation to biomass ash composition were developed. The random pore model (RPM) described the experimental reactivity best, with activation energies of 59-196 kJ mol(-1), The study of their reactivities provided a ranking of fast-, medium- and slow-kinetics fuels. The influence of alkaline and alkaline-earth metals (AAEM) on reactivity revealed that K, Na and Mg had a positive effect while Si, P and Ca had a negative influence. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：426 / 437

页数：12

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