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Affiliation of Author(s):能源与动力工程学院

Journal:Journal of Thermal Analysis and Calorimetry

Key Words:Thermogravimetric analysis; Oxy-fuel combustion; Characteristic parameters; Model-fitting approach; Kinetic triplet

Abstract:Temperature programmed combustions (TPC) of Yang-Quan anthracite, Liao-Cheng lean coal and Li-Yan bituminous coal in oxy-fuel atmosphere were conducted in a thermogravimetric analyzer and characteristic parameters were deduced from the TG-DTG curves. The results showed that combustion got harder to progress as the coalification degree increasing. Within range of 40%, effect of heightening O-2 concentration favored the combustion process, but beyond this zone, the effect leveled off. The model-fitting mathematical approach was used to evaluated the kinetic triplet (f (alpha), E, A) through Coats-Redfern method. The calculation showed that D (3)-Jander was the proper reaction model and the evaluations of E and A validated the experimental results.

First Author:Shengli Niu

Indexed by:Journal paper

Correspondence Author:Chunmei Lu*

Document Code:lw-85056

Discipline:Engineering

First-Level Discipline:Power Engineering and Engineering Thermophysics

Document Type:J

Volume:98

Issue:1

Page Number:267-274

Translation or Not:no

Date of Publication:2009-10-01

Included Journals:SCI