TG study on pyrolysis of biomass and its three components under syngas☆

Wang, Gang; Li, Wen; Li, Baoqing; Chen, Haokan

doi:10.1016/j.fuel.2007.02.032

Cited by 255 publications

(115 citation statements)

References 14 publications

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“…Tables 5 through 7 show the E values determined from the Coats-Redfern method under different process parameters varied from 64 to 80 kJ·mol -1 , which was much lower than that of coal (generally 120 to 230 kJ·mol -1 ) recorded in the literature (Liang and Kozinski 2000). Besides, Wang et al (2008) reported that the E values of sawdust calculated by distributed activation energy model (DAEM) ranged from 161.9 to 202.3 kJ/mol, and Yang et al (2010) demonstrated that the E values of wheat straw calculated by the methods of Kissinger and Ozawa were respectively 103.92 and 107.69 kJ/mol, all of which are much higher than that of the studied CC samples. Thus, these results further indicate that CC can decompose more easily.…”

Section: Influence Of Different Process Parameters On Thermal Dynamicmentioning

confidence: 80%

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

Yao¹,

Xu²,

Liang³

2017

BioResources

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The influence of heating rate, gas flow, and biomass particle size on the pyrolysis and thermal dynamics of corncobs (CC) was investigated experimentally using the quantitative method of thermogravimetric analysis (TGA) coupled with mass spectrometry (MS), and the obtained results were compared in depth. For the examined heating rates of 5, 10, and 20 °C/min, the CC pyrolysis at higher heating rates resulted in a more complete decomposition. The initial pyrolysis temperature decreased when gas flow was increased from 30 to 90 mL/min, whereas the weight loss increased. Particle sizes (d ≤ 74 μm, 74 μm < d ≤ 154 μm, 154 μm < d ≤ 280 μm, and 280 μm < d ≤ 450 μm) had pronounced effects on the thermal decomposition and bio-syngas compounds (CO, CO2, CH4, and H2) distribution. The emission intensities of most the gaseous products increased at the elevated heating rate, while they decreased with increasing gas flow. In sum, the pyrolysis of CC particles of 154 μm < d ≤ 280 μm under 20 °C/min and in a gas flow of 30 to 60 mL/min was the most appropriate for bio-syngas production in industrial applications.

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Section: Influence Of Different Process Parameters On Thermal Dynamicmentioning

confidence: 80%

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

Yao¹,

Xu²,

Liang³

2017

BioResources

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“…Hemicellulose is the easiest to pyrolyze, followed by cellulose and then lignin, the most difficult one (Vafakhah et al 2014). The first stage weight loss of samples between 230 °C and 310 °C can be attributed to the pyrolysis of hemicellulose (Wang et al 2008). The decomposition of cellulose between 310 °C and 600 °C caused the appearance of the second stage.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Thermal Decomposition Properties of Materials from Different Parts of Corn Stalk

Huang¹,

Wu²,

Zhou³

et al. 2015

BioResources

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aTo help better utilize corn stalk (CS), pyrolysis behavior of materials from different parts of the CS including corn stalk without pith, corn root, and corn leaf were analyzed using thermogravimetric analysis (TGA) at heating rates of 5, 10, 20, and 25 °C/min. The apparent activation energies determined by the Friedman method for corn stalk without pith, corn root, and corn leaf were in the range of 26.4 to 103.6 kJ/mol, 37.6 to 69.5 kJ/mol, and 35.0 to 103.9 kJ/mol, respectively, depending on the conversion. The main thermal decomposition occurred within a temperature range of 200 to 350 °C (±10 °C). Most of the volatile materials decomposed at less than a 0.8 conversion rate. At greater than a 0.8 conversion rate, the remaining material was mainly char, and the decomposition of char proceeded at higher conversion rates. Different pyrolysis characteristics in the CS indicated that different treatments should be chosen according to different parts for achieving the optimum conversion rate in practical applications.

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“…The distributed activation energy model (DAEM) has been widely used to analyse complex reaction systems (Wang et al 2008;Shen et al 2011). In the present study, thermal conversion process of S. plumbizicicola under an inert atmosphere is composed of a set of irreversible single (first-order) reactions occurring successively (Cheng et al 2015;Li et al 2013).…”

Section: Kinetic Analysis Using Daemmentioning

confidence: 99%

Pyrolysis of Sedum plumbizincicola, a zinc and cadmium hyperaccumulator: pyrolysis kinetics, heavy metal behaviour and bio-oil production

Zhong

et al. 2016

Clean Techn Environ Policy

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Appropriate disposal of hyperaccumulator biomass is a problem inhibiting the widespread use of phytoremediation technology. In the present study, kinetic analysis of the pyrolysis process of Sedum plumbizincicola, the behaviour of heavy metals and bio-oil composition were studied. The kinetic analysis of the pyrolysis process shows that activation energy (E) changed from 150 to 186 kJ mol -1 and the frequency factor (A) changed from 1.34 9 10 11 to 8.99 9 10 15 s -1 . At temperatures of 450-750°C more than 66.3 % of zinc (Zn) remained in the char. More than 87.6 % of the cadmium (Cd) was found in the bio-oil. Pyrolysis at 650°C led to the highest yield of alkanes with low-oxygen compounds found in the bio-oil. Pyrolysis at 650°C can likely offer a valuable processing method for S. plumbizincicola and recovery of Zn from the char and recovery of Cd from the bio-oil will be attempted in future research.

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TG study on pyrolysis of biomass and its three components under syngas☆

Cited by 255 publications

References 14 publications

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

Assessing the Effects of Different Process Parameters on the Pyrolysis Behaviors and Thermal Dynamics of Corncob Fractions

Thermal Decomposition Properties of Materials from Different Parts of Corn Stalk

Pyrolysis of Sedum plumbizincicola, a zinc and cadmium hyperaccumulator: pyrolysis kinetics, heavy metal behaviour and bio-oil production

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