Journal
RENEWABLE ENERGY
Volume 141, Issue -, Pages 814-827Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2019.04.040
Keywords
Joint optimization; Thermogravimetric analysis; Py-GC/MS; Degradation mechanism; Model-free methods
Funding
- National Natural Science Foundation of China [51608129]
- Scientific and Technological Planning Project of Guangzhou, China [201704030109]
- Science and Technology Planning Project of Guangdong Province, China [2019B020208017, 2018A050506046, 2016A050502059]
Ask authors/readers for more resources
Thermogravimetric and pyrolysis-gas chromatography/mass spectrometry analyses were performed to quantify the pyrolysis performances, kinetics, thermodynamics, products and optimization of incense sticks (IS) in N-2 and CO2 atmospheres at five heating rates. The increased heating rate caused a lagged IS pyrolysis, moving its curves to a higher temperature. According to four model-free methods, activation energy estimates ranged from 34.17 to 439.19 kJ.mol(-1) and 28.46-187.34 kJ.mol(-1) in the N-2 and CO2 atmospheres, respectively. The three-dimension diffusion (spherical symmetry) (D3) was determined using the Horowitz-Metzger method as the most probable degradation mechanism in both atmospheres. The main pyrolytic products were found as benzene and its derivatives whose mass accounted for 49.94% of the total 18 products. Significant two-way interaction effects were found between temperature, heating rate, and atmosphere type on the three responses of remaining mass, derivative thermogravimetry, and differential scanning calorimetry (p = 0.001). The best joint optimization was obtained at 899.5 degrees C with the heating rate of 5 degrees C.min(-1) in the CO2 atmosphere and was more sensitive to the increased heating rate in the N-2 than CO2 atmosphere. (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available