Study on the co-pyrolysis of oil shale and corn stalk: Pyrolysis characteristics, kinetic and gaseous product analysis

Zhai, Yingmei; Zhu, Yiming; Cui, Shuang; Tao, Yiming; Xing, Kai; Yang, Tianhua

doi:10.1016/j.jaap.2022.105456

Cited by 18 publications

(6 citation statements)

References 29 publications

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“…From Figure , it can be observed that the suppression of the shoulder peaks increases as the sludge blending ratio increases. The mechanism by which coal and sludge inhibit the weight loss of organic substances with strong chemical bonds, such as semiaromatic compounds, is not clear and may be related to the minerals in coal and sludge . By comparing the DTG curves of the measured/calculated values, the measured value of weight loss was 3.27% lower than the calculated value when the sludge blending ratio was 10 wt %.…”

Section: Resultsmentioning

confidence: 90%

“…The mechanism by which coal and sludge inhibit the weight loss of organic substances with strong chemical bonds, such as semiaromatic compounds, is not clear and may be related to the minerals in coal and sludge. 22 By comparing the DTG curves of the measured/calculated values, the measured value of weight loss was 3.27% lower than the calculated value when the sludge blending ratio was 10 wt %. This is due to the sludge semicoke adhering to the coal surface and inhibiting the release of volatile matter.…”

Section: Analysis Of the Synergistic Effect Of Mixed Combustion Of Sl...mentioning

confidence: 87%

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Combustion Characterization and Kinetic Analysis of Mixed Sludge and Lignite Combustion

Sun,

Yang

et al. 2024

ACS Omega

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To investigate the feasibility and reaction mechanism of combusting sewage sludge and brown coal in a mixture. Thermal behavior evaluation of combustion characteristics, interactions, and kinetic analysis of sludge-lignite mixture combustion by thermogravimetry (TG). The results showed that the combustion performance of the mixed samples was all in between that of the lignite and sludge samples. The combined combustion index gradually decreased with the increase in sludge mixing. The addition of sludge favors the ignition of the mixture but is not conducive to overall stable combustion. The synergies between the sludges, as assessed by the mass loss curves, are reflected in the ash removal and coke oxidation stages. When the mixture of sludge and lignite is burned at a ratio of 10 wt %, the calorific value can still reach 20.3 MJ/kg, which is only about 4.2% lower than that of burning lignite alone. Application of the kinetic models of FWO, Starink, KAS, and Friedman, in turn, determined a minimum average activation energy of only 132.50 kJ/mol. In addition, the reaction was judged to be a simple complexation reaction by analyzing the thermodynamic parameters (ΔG, ΔS, ΔH, and A), with the combustion process approaching thermodynamic equilibrium and forming stable products. The nucleation model A4.2 can be used as the best reaction mechanism model for sludge−lignite mixed combustion.

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Section: Resultsmentioning

confidence: 90%

Section: Analysis Of the Synergistic Effect Of Mixed Combustion Of Sl...mentioning

confidence: 87%

Combustion Characterization and Kinetic Analysis of Mixed Sludge and Lignite Combustion

Sun,

Yang

et al. 2024

ACS Omega

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“…Zhai et al studied the pyrolysis characteristics, kinetics, and gaseous products of co‐pyrolysis of corn stalk and oil shale. The results found that the interaction between oil shale and corn stalk was the most significant with the lowest apparent activation energy when the blending ratio of corn stalk is 50% 143 …”

Section: Research Progress On Pyrolysis Kinetics Of Solid Fossil Fuel...mentioning

confidence: 99%

“…The results found that the interaction between oil shale and corn stalk was the most significant with the lowest apparent activation energy when the blending ratio of corn stalk is 50%. 143 Recent studies on co-pyrolysis of solid fossil fuels based on TGA are summarized in Table 6. Different mixing ratios affected the reaction process and kinetic parameters.…”

Section: Et Almentioning

confidence: 99%

A review on thermogravimetric analysis‐based analyses of the pyrolysis kinetics of oil shale and coal

Li,

Zhou

et al. 2023

Energy Science & Engineering

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Solid fossil fuels still support the development of the energy and chemical industry. The clean and efficient utilization of solid fossil fuels can effectively alleviate the problems of energy shortage and environmental pollution. An in‐depth understanding of the kinetic process, models, and mechanism of pyrolysis of solid fossil fuels is also of great significance for the exploration and utilization technologies of petroleum resources. Thermogravimetric analysis is an effective method to study the pyrolysis process and kinetics with the advantages of high sensitivity, repeatability, and reliability for data acquisition. Researchers have conducted a lot of research on the thermogravimetric kinetics of solid fossil fuels in recent years, but there is a lack of systematic summary and comparison of kinetic methods, research progress, and trends. Therefore, a comprehensive study on pyrolysis kinetic principles, methods, and models of solid fossil fuels by thermogravimetric analysis is carried out in this paper. The influencing factors of pyrolysis kinetics of solid fossil fuels using thermogravimetry are elaborated and discussed in detail. This study also provides progress in recent years and prospects of thermogravimetric kinetics of solid fossil fuels. It is expected that this paper can provide certain technical support and theoretical guidance for the research on pyrolysis kinetics based on thermogravimetric analysis, and the exploration and development, clean, and efficient utilization of solid fossil fuels.

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“…Rice husk (RH), the most representative biomass, is produced approximately 134 million tons annually worldwide, but less than 10% of this volume is properly managed and disposed of [32]. Additionally, the abundant alkaline metals in RH are also considered to play a crucial role in the catalytic pyrolysis process [33]. However, to the best of our knowledge, so far, quite limited work has been performed on the pyrolysis of RAB and its blends with RH for the improvement of pyrolysis characteristics.…”

Section: Introductionmentioning

confidence: 99%

Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis

Zhao,

Mi,

et al. 2023

Materials

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Realizing the utilization of reclaimed asphalt binder (RAB) and rice husk (RH) to reduce environmental pollution and expand the reutilization technique of reclaimed asphalt pavement (RAP), co-pyrolysis of RAB with RH has great potential. In this study, the co-pyrolysis behaviors, gaseous products, and kinetics were evaluated using thermogravimetric analysis and Fourier transform infrared spectroscopy (TG-FTIR). The results showed that incorporating RH into RAB improved its pyrolysis characteristics. The interactions between RAB and RH showed initial inhibition followed by subsequent promotion. The primary gaseous products formed during co-pyrolysis were aliphatic hydrocarbons, water, and carbon dioxide, along with smaller amounts of aldehydes and alcohols originating from RH pyrolysis. All average activation energy values for the blends, determined through iso-conversional methods, decreased with RH addition. The combined kinetic analysis revealed two distinct mechanisms: (1) at the lower conversion range, the pyrolysis of the blend followed a random nucleation and three-dimensional growth mechanism, while (2) at the higher conversion range, the control mechanism transitioned into three-dimensional diffusion.

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Study on the co-pyrolysis of oil shale and corn stalk: Pyrolysis characteristics, kinetic and gaseous product analysis

Cited by 18 publications

References 29 publications

Combustion Characterization and Kinetic Analysis of Mixed Sludge and Lignite Combustion

Combustion Characterization and Kinetic Analysis of Mixed Sludge and Lignite Combustion

A review on thermogravimetric analysis‐based analyses of the pyrolysis kinetics of oil shale and coal

Reutilization of Reclaimed Asphalt Binder via Co-Pyrolysis with Rice Husk: Thermal Degradation Behaviors and Kinetic Analysis

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