Статья

Effect of Char Structure Evolution During Pyrolysis on Combustion Characteristics and Kinetics of Waste Biomass

Yanshan YinSchool of Energy and Power Engineering, Changsha University of Science & Technology, No. 960, 2nd Section, South Wanjiali Road, Changsha 410114, China e-mail:Jie YinSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Wei ZhangSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Hong TianSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Zhangmao HuSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Min RuanSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Ziyou SongSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:Liang LiuSchool of Energy and Power Engineering, Changsha University of Science & Technology, South Wanjiali Road, Changsha 410114, China e-mail:

2018en

ABI

Аннотация

Two waste biomass materials, pine needle (PN) and corn stalk (CS), were pyrolyzed at different temperatures (200–900 °C). The organic functional groups and carbonaceous structure of the biomass chars were characterized by Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy, respectively. The combustion characteristics and kinetics of biomass chars were investigated by thermogravimetric analysis (TGA). The content of carbon-, hydrogen-, and oxygen-containing functional groups in the biomass samples decreases with an increase in preparation temperature, leading to more aromatic macromolecular structure at elevated pyrolysis temperatures. With increasing pyrolysis temperature, the comprehensive combustibility index (S) of both chars related to combustion reactivity generally decreases especially for CS char because of the loss of active groups. However, the Raman spectra show that the degree of order decreases with increasing pyrolysis temperature from 400 to 700 °C because of the generation of isolated sp2 carbon.

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Идентификаторы

DOI: 10.1115/1.4039445

Цитирования и источники

Цитирований: 6Использованных источников: 0

Показатели — AkademScholar