Authors:
Xuebin Wang School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA, 94720, USA

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Jipeng Si School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

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Houzhang Tan School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

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Yanqing Niu School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

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Chao Xu School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

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Tongmo Xu School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

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Abstract

The combustion kinetics of waste capsicum stalk (WCS) in Western China is investigated through thermogravimetric analysis compared with sawdust and coal, and co-combustion of WCS with coal is also investigated. Results show that the ignition characteristics of WCS is better than that of sawdust and coal, and the activation energy E of WCS-volatile combustion and WCS-char combustion are 78.55 kJ mol−1 and 44.59 kJ mol−1. However, integrating the characteristics of ignition and burnout, the combustion characteristic factor (SN) of WCS is lower than that of sawdust. With the increasing in the heating rate, the ignition of WCS is delayed. Oxygen concentration affects E and k0 of volatile combustion largely under rich-oxygen condition, when increases from 0.2 to 0.8, E has increased threefold and k0 also intensively increases from 106 to 1013–1022. Oppositely, effect of on the E and k0 of char combustion is little, and there is an exponential relationship between SN and . For the tests of co-combustion, all the experimental and weighted-average curves coincide well, and there is no remarkable synergistic effect. With the increase of mixing ratio that WCS added, E and k0 of volatile combustion increase, but correspondingly E and k0 of char combustion decrease.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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