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Analysis of coals and biomass pyrolysis using the distributed activation energy model

Author:
Li, Zhengqi, Liu, Chunlong, Chen, Zhichao, Qian, Juan, Zhao, Wei, Zhu, Qunyi
Source:
Bioresource technology 2009 v.100 no.2 pp. 948-952
ISSN:
0960-8524
Subject:
renewable energy sources, biomass, gasification, corn stover, coal, pyrolysis, thermogravimetry, mathematical models
Abstract:
The thermal decomposition of coals and biomass was studied using thermogravimetric analysis with the distributed activation energy model. The integral method resulted in Datong bituminous coal conversions of 3-73% at activation energies of 100-486kJ/mol. The corresponding frequency factors were e¹⁹.⁵-e⁵⁹.⁰ s⁻¹. Jindongnan lean coal conversions were 8-52% at activation energies of 100-462kJ/mol. Their corresponding frequency factors were e¹³.⁰-e⁵⁵.⁸ s⁻¹. The conversion of corn-stalk skins were 1-84% at activation energies of 62-169kJ/mol with frequency factors of e¹⁰.⁸-e²⁶.⁵ s⁻¹. Datong bituminous coal, Jindongnan lean coal and corn-stalk skins had approximate Gaussian distribution functions with linear ln k ₀ to E relationships.
Agid:
744993