Theoretical Analysis of Double Logistic Distributed Activation Energy Model for Thermal Decomposition Kinetics of Solid Fuels

Dong, Zhujun; Yang, Yang; Cai, Wenfei; He, Yifeng; Chai, Meiyun; Liu, Biaobiao; Yu, Xi; Banks, Scott W.; Zhang, Xingguang; Bridgwater, Anthony V.; Cai, Junmeng

doi:10.1021/acs.iecr.8b01527

Cited by 22 publications

(13 citation statements)

References 62 publications

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“…Through the FTIR analysis of DPWP, we observed that all DPWP showed similar functional groups with varying spectral intensities across the measured spectrum (Figure 3). The absorption bands around 1260-1034 cm −1 were assigned to C-O-C and C-O bond stretching in the aryl ether groups present in cellulose and lignin [40,41]. The spectral bands at 1649, 1527, and 1649 cm −1 were attributed to the C=C vibration of the aromatic ring, C-H bending, and C=C aromatic skeletal vibrations, respectively [41,42].…”

Section: Ftir Analysis Of Dpwpmentioning

confidence: 99%

“…The absorption bands around 1260-1034 cm −1 were assigned to C-O-C and C-O bond stretching in the aryl ether groups present in cellulose and lignin [40,41]. The spectral bands at 1649, 1527, and 1649 cm −1 were attributed to the C=C vibration of the aromatic ring, C-H bending, and C=C aromatic skeletal vibrations, respectively [41,42]. Furthermore, the bands in the range between 2371 and 2098 cm −1 were characteristic of C=O stretching present in the carboxylic, ketone, and aldehyde groups [42].…”

Section: Ftir Analysis Of Dpwpmentioning

confidence: 99%

“…The DAEM model has practically been used for a single distribution of activation energy. However, due to multistage reactions involved during pyrolysis, single activation energy distribution cannot be guaranteed [41]. Therefore, the model-free methods such as FWO, KAS, and Starink models have received attention.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

et al. 2020

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Using the thermalgravimetric technique, we investigated the non-isothermal combustion kinetics of abundant and low-cost date palm wastes (leaflet, rachis, fibers, and their composite) as potential biomass energy sources. The kinetic and thermodynamic parameters were determined by Flynn–Wall–Ozawa (FWO), Kissinger–Akahila–Sunose (KAS), and Starink methods. Thermogravimetric analysis results showed a major peak for the degradation of volatiles between 127–138 °C with average percentage mass loss of 68.04 ± 1.5, 65.57 ± 0.6, 62.97 ± 5.5, and 59.26 ± 3.2, for rachis, composite, leaflet, and fibers, respectively. The FWO model showed the lowest activation energy, Eα, of 157 ± 25.6, 158 ± 25.7, 164 ± 40.1, and 169 ± 51.8 kJ mol−1 for the composite, rachis, leaflet, and fibers, respectively. The positive enthalpy values confirmed an endothermic pyrolysis reaction. For all models, a minimal difference of 4.40, 5.57, 6.55, and 7.51 kJ mol−1 between activation energy and enthalpy for rachis, fibers, composite, and leaflet ensued, respectively. The KAS model was best suited to describe chemical equilibrium with average ΔG values of 90.3 ± 28.8, 99.3 ± 34.9, 178.9 ± 27.3, and 186.5 ± 38.2 kJ mol−1 for rachis, fibers, composite, and leaflet, respectively. The reaction mechanism by the Malek and Popescu methods was ((g(α)=[−ln(1−α)]14) across the conversion range of 0.1–0.9 for all heating rates. The high energy content and volatile matter combined with low energy barriers make date palm waste a potential candidate in a biorefinery.

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Section: Ftir Analysis Of Dpwpmentioning

confidence: 99%

Section: Ftir Analysis Of Dpwpmentioning

confidence: 99%

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Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

et al. 2020

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“…The biochar gasification is the committed step, which is due to its low conversion rate and higher activation energy compared to the raw material pyrolysis stage [21]. The reaction kinetics are critical in process development, as they provide important parameters for reactor design and process modelling [22]. Some research showed that the kinetic parameters of different biochar produced by different conditions are not the same [3,18,23].…”

Section: Introductionmentioning

confidence: 99%

Kinetic study on the CO2 gasification of biochar derived from Miscanthus at different processing conditions

Tian

Wang

et al. 2021

Energy

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CO 2 gasification is an emerging process that can improve the quality of syngas and enhance the CO 2 circular utilisation. This paper presents an analysis on the CO 2 gasification of Miscanthus-derived biochar produced at various processing conditions. The gasification behaviour, kinetics and biochar reactivity were investigated and the correlations to the biochar preparation condition and their microstructure were developed. Results showed that the preparation and gasification reaction conditions had major impact on the biochar reactivity.The order of significance that affected the biochar reactivity was gasification temperature, biochar preparation temperature and processing atmosphere. Increasing heating rate could enhance the biochar reactivity, while increasing preparation temperature could reduce the reactivity in N 2 and He atmosphere. At 600 and 1000 °C, He atmosphere produced the most activity biochar, followed by N 2 and CO 2 . At 800 °C, CO 2 atmosphere gave the highest reactivity, followed by He and N 2 . The Activation Energy (E) of gasification reaction calculated by the Hybrid Model was mainly in the range of 78.09-212.46 kJ mol -1 . The E decreased with the increase of carbon conversion rate. A great kinetic compensation effect between E and A was identified during the CO 2 gasification process.

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“…In view of these urgent issues in energy and environment, many countries including China (the world's largest greenhouse gas emitter) are taking substantial measures to promote a greater use of renewable energy resources to reduce the heavy dependence on fossil fuels [3]. Among existent renewable energy sources, biomass has attracted immense attention because it is a promising and cost-effective feedstock to produce clean and renewable biofuels [4,5]. Biomass can be exploited to produce biofuel, heat or chemicals via different conversion technologies.…”

Section: Introductionmentioning

confidence: 99%

Reaction chemistry and kinetics of corn stalk pyrolysis without and with Ga/HZSM-5

Huang

Xie

Yang

et al. 2018

J Therm Anal Calorim

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The bifunctional Ga/HZSM-5 catalyst has been proven having the capabiliity to increase the selectivity of aromatics production during catalytic pyrolysis of furan and woody biomass. However, the reaction chemistry and kinetics of pyrolysis of herbaceous biomass promoted by Ga/HZSM-5 is rarely reported. Pyrolysisgas chromatography / mass spectrometry (Py-GC/MS) analysis and nonisothermal thermogravimetric (TG) analysis at four heating rates were carried out to investigate the decomposition behavior and pyrolysis kinetics of corn stalk without and with Ga/HZSM-5. The effective activation energies for corn stalk pyrolysis were calculated by using the Friedman isoconversional method. The Py-GC/MS analysis results indicated that the Ga/HZSM-5 catalyst had a high selectivity towards producing the aromatic chemicals of xylene, toluene and benzene, whereas the major products from noncatalytic pyrolysis of corn stalk were oxygenated compounds. The presence of Ga/HZSM-5 could significantly reduce the effective activation energies of corn stalk pyrolysis from 159.9-352.4 kJ mol-1 to 41.6-99.8 kJ mol-1 in the conversion range of 0.10-0.85.

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Theoretical Analysis of Double Logistic Distributed Activation Energy Model for Thermal Decomposition Kinetics of Solid Fuels

Cited by 22 publications

References 62 publications

Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

Kinetic study on the CO2 gasification of biochar derived from Miscanthus at different processing conditions

Reaction chemistry and kinetics of corn stalk pyrolysis without and with Ga/HZSM-5

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