Kinetic study on the pyrolysis behavior of Huadian oil shale via non-isothermal thermogravimetric data

Bai, Fengtian; Guo, Wei; Lü, Xiaoshu; Liu, Yumin; Guo, Mingyi; Li, Qiang; Sun, Youhong

doi:10.1016/j.fuel.2014.12.073

Cited by 128 publications

(78 citation statements)

References 36 publications

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“…1 shows the thermal mass loss results for the TG and tube furnace experiments on the Huadian oil shale. In the TG curve, three stages of the pyrolysis process can be observed [20,21]; namely, water evaporation (below 200°C), organic matter de-volatilization (200-600°C), and decomposition of inorganic minerals (above 600°C). A similar mass loss process was observed during the tube furnace pyrolysis experiment, where the solid residue yield decreased rapidly over the temperature range of 300-500°C.…”

Section: Thermal Characterizationmentioning

confidence: 99%

Evaluation of the porous structure of Huadian oil shale during pyrolysis using multiple approaches

Bai

Sun

Liu

et al. 2017

Fuel

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147

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Section: Thermal Characterizationmentioning

confidence: 99%

Evaluation of the porous structure of Huadian oil shale during pyrolysis using multiple approaches

Bai

Sun

Liu

et al. 2017

Fuel

Self Cite

147

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“…Therefore, it is particularly important to pay attention to the characteristics of pyrolysis of oil shale and the mobility of products. At present, research has made great progress in describing the physicochemical characteristics of oil shale and kerogen [18][19][20][21][22], as well as the relationship between pyrolysis characteristics of oil shale and pyrolysis temperature, pyrolysis pressure, heating rate, heating duration, particle size, and other factors [23][24][25][26][27][28][29][30][31][32]. Analysis on the pore structure mainly focuses on shale's geologically evolving processes or reservoir characteristics, such as the relationship between porosity and organic matter content, maturity, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of In Situ Pyrolysis on the Evolution of Pore Structure of Oil Shale

Liu

Yang

et al. 2018

Energies

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The evolution of pore structure during in situ underground exploitation of oil shale directly affects the diffusion and permeability of pyrolysis products. In this study, on the basis of mineral analysis and thermogravimetric results, in combination with the low-pressure nitrogen adsorption (LPNA) and mercury intrusion porosimetry (MIP) technique, the evolution of pore structure from 23 to 650 • C is quantitatively analyzed by simulating in situ pyrolysis under pressure and temperature conditions. Furthermore, based on the experimental results, we analyze the mechanism of pore structure evolution. The results show the following: (1) The organic matter of Fushun oil shale has a degradation stage in the temperature range of 350-540 • C, and there is no obvious temperature gradient between decomposition of kerogen and the secondary decomposition of bitumen. The thermal response mechanisms of organic matter and minerals are different in each temperature stage, and influence the change of pore structure. (2) Significant changes occur in pore shape at 350 • C, where thermal decomposition of kerogen begins. The ink-bottle pores are dominant when the temperature is less than 350 • C, whereas slit pores dominate when the temperature is greater than 350 • C. (3) The change in pore structure of oil shale is much less significant from 23 to 350 • C. The pore volume, porosity, and specific surface area (SSA) of samples increase rapidly with temperature varying from 350 to 600 • C. The variation of each parameter is dissimilated from 600 to 650 • C: the porosity and pore volume increases with a small gradient from 600 to 650 • C, and SSA decreases significantly. (4) The lithostatic pressure does not cause change in the evolution discipline of the pore structure, but the inhibitory effect on the pore development is significant.

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“…The kinetic parameters of the process for various kinds of oil shale were determined from experimental data by using Direct Arrhenius Method, Integral Method, Differential Method, Friedman Procedure, Maximum Rate Method, etc. [35][36][37][38].…”

Section: Thermal Decomposition Of Kerogenmentioning

confidence: 99%

Modeling study of oil shale pyrolysis in rotary drum reactor by solid heat carrier

Gerasimov

Volkov

2015

Fuel Processing Technology

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Kinetic study on the pyrolysis behavior of Huadian oil shale via non-isothermal thermogravimetric data

Cited by 128 publications

References 36 publications

Evaluation of the porous structure of Huadian oil shale during pyrolysis using multiple approaches

Evaluation of the porous structure of Huadian oil shale during pyrolysis using multiple approaches

Influence of In Situ Pyrolysis on the Evolution of Pore Structure of Oil Shale

Modeling study of oil shale pyrolysis in rotary drum reactor by solid heat carrier

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