Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)

Ma Qinghua; Zhang Xuemei; Li Dong; Hao Jingyuan

doi:doi:10.11648/j.ijeee.20210605.15

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Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)

Ma Qinghua, Zhang Xuemei, Li Dong, Hao Jingyuan

Published in International Journal of Economy, Energy and Environment (Volume 6, Issue 5)

Received: 3 September 2021 Accepted: 15 October 2021 Published: 19 October 2021

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Abstract

In order to quantitatively study the metamorphism of coal, by calculating the changes of reflectivity with time and temperature and the changes of temperature with time and reflectivity, the results show that the temperature time reflectivity ternary coal metamorphism thermodynamic equation (Cmte) proposed by Mr. Wu Chonglong is feasible. Although it is only an empirical formula, the mathematical formula is more convenient and accurate than the diagram, The critical temperature of lignite is 49.3°C and that of long flame coal is 56.9°C. The empirical formula of temperature time reflectance is demonstrated to explain the metamorphism of coal. By compiling temperature reflection (time) maps of middle coal formation in Carboniferous, Jurassic and Cretaceous, this paper explains the concept of "the longer the thermal time, the higher the degree of metamorphism" with isothermal horizontal line or equal reflection vertical line. The temperature and effective metamorphic time in the literature of Nantong coalfield in Sichuan further prove the accuracy and practicability of Cmte. The mathematical formula of temperature time reflectance can not only know the cross verification temperature of time and reflectance, but also know the time with a difference of less than 1.4% from the original effective metamorphic time. It is proved that the empirical formula of temperature time reflectance can explain the metamorphism of coal.

Published in	International Journal of Economy, Energy and Environment (Volume 6, Issue 5)
DOI	10.11648/j.ijeee.20210605.15
Page(s)	110-113
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Coal Metamorphism Thermodynamics Equation, Temperature-time-reflectivity, Long Flame Coal

References

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[4]	Yang Qi. A study on coal metamorphism in China [J]. Earth Science-Journal of China University of Geosciences, 1989, 14 (4): 341-345.
[5]	Yang Qi. Superimposed metamorphism of Chinese coal [J]. Earth Science-Journal of China University of Geosciences, 1999, 6 (z1): 1-8.
[6]	Yang Qi, Wu Chonglong, Tang Dazhen, et al. Coal metamorphism in China [J]. Earth Science-Journal of China University of Geosciences, 1996, 21 (3): 311-319.
[7]	Hood A, Gutjahr C C M, Heacock R H. Organic metamorphism and the generation of petroleum [J]. Bull. AAPG, 1975, 59 (6): 986-996.
[8]	Bostick N H, Cashman S M, McCulloh T H, et al. Gradients of vitrinite reflectance and present temperature in the Los Angeles and Ventura Basins, California. In: Oltz D F, ed. Low temperature metamorphism of kerogen and clay minerals. Los Angeles: Pacific Section, SEPM (Society for Sedimentary Geology), 1979, 65-96.
[9]	Method of determining microscopically the reflectance of vitrinite in coal. GB/T 6948-2008.
[10]	Li Wenhua, Bai Xiangfei, Yang Jinhe, et al. Correspondence between mean maximum reflectance of Vitrinite and classification of bituminous coals [J]. Journal of China Coal Society, 2006, 31 (3): 342-345.
[11]	Classification of coalification degree by vitrinite reflectance. MT/T 1158-2011.
[12]	Hu Zhongya. Analysis of the effects of temperature, time and pressure on metamorphism [J]. Silicon Valley, 2010, (08): 4.
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APA Style

Ma Qinghua, Zhang Xuemei, Li Dong, Hao Jingyuan. (2021). Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). International Journal of Economy, Energy and Environment, 6(5), 110-113. https://doi.org/10.11648/j.ijeee.20210605.15

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ACS Style

Ma Qinghua; Zhang Xuemei; Li Dong; Hao Jingyuan. Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). Int. J. Econ. Energy Environ. 2021, 6(5), 110-113. doi: 10.11648/j.ijeee.20210605.15

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AMA Style

Ma Qinghua, Zhang Xuemei, Li Dong, Hao Jingyuan. Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). Int J Econ Energy Environ. 2021;6(5):110-113. doi: 10.11648/j.ijeee.20210605.15

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@article{10.11648/j.ijeee.20210605.15,
  author = {Ma Qinghua and Zhang Xuemei and Li Dong and Hao Jingyuan},
  title = {Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)},
  journal = {International Journal of Economy, Energy and Environment},
  volume = {6},
  number = {5},
  pages = {110-113},
  doi = {10.11648/j.ijeee.20210605.15},
  url = {https://doi.org/10.11648/j.ijeee.20210605.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijeee.20210605.15},
  abstract = {In order to quantitatively study the metamorphism of coal, by calculating the changes of reflectivity with time and temperature and the changes of temperature with time and reflectivity, the results show that the temperature time reflectivity ternary coal metamorphism thermodynamic equation (Cmte) proposed by Mr. Wu Chonglong is feasible. Although it is only an empirical formula, the mathematical formula is more convenient and accurate than the diagram, The critical temperature of lignite is 49.3°C and that of long flame coal is 56.9°C. The empirical formula of temperature time reflectance is demonstrated to explain the metamorphism of coal. By compiling temperature reflection (time) maps of middle coal formation in Carboniferous, Jurassic and Cretaceous, this paper explains the concept of "the longer the thermal time, the higher the degree of metamorphism" with isothermal horizontal line or equal reflection vertical line. The temperature and effective metamorphic time in the literature of Nantong coalfield in Sichuan further prove the accuracy and practicability of Cmte. The mathematical formula of temperature time reflectance can not only know the cross verification temperature of time and reflectance, but also know the time with a difference of less than 1.4% from the original effective metamorphic time. It is proved that the empirical formula of temperature time reflectance can explain the metamorphism of coal.},
 year = {2021}
}

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TY  - JOUR
T1  - Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)
AU  - Ma Qinghua
AU  - Zhang Xuemei
AU  - Li Dong
AU  - Hao Jingyuan
Y1  - 2021/10/19
PY  - 2021
N1  - https://doi.org/10.11648/j.ijeee.20210605.15
DO  - 10.11648/j.ijeee.20210605.15
T2  - International Journal of Economy, Energy and Environment
JF  - International Journal of Economy, Energy and Environment
JO  - International Journal of Economy, Energy and Environment
SP  - 110
EP  - 113
PB  - Science Publishing Group
SN  - 2575-5021
UR  - https://doi.org/10.11648/j.ijeee.20210605.15
AB  - In order to quantitatively study the metamorphism of coal, by calculating the changes of reflectivity with time and temperature and the changes of temperature with time and reflectivity, the results show that the temperature time reflectivity ternary coal metamorphism thermodynamic equation (Cmte) proposed by Mr. Wu Chonglong is feasible. Although it is only an empirical formula, the mathematical formula is more convenient and accurate than the diagram, The critical temperature of lignite is 49.3°C and that of long flame coal is 56.9°C. The empirical formula of temperature time reflectance is demonstrated to explain the metamorphism of coal. By compiling temperature reflection (time) maps of middle coal formation in Carboniferous, Jurassic and Cretaceous, this paper explains the concept of "the longer the thermal time, the higher the degree of metamorphism" with isothermal horizontal line or equal reflection vertical line. The temperature and effective metamorphic time in the literature of Nantong coalfield in Sichuan further prove the accuracy and practicability of Cmte. The mathematical formula of temperature time reflectance can not only know the cross verification temperature of time and reflectance, but also know the time with a difference of less than 1.4% from the original effective metamorphic time. It is proved that the empirical formula of temperature time reflectance can explain the metamorphism of coal.
VL  - 6
IS  - 5
ER  -

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Author Information

Ma Qinghua

Energy & Chemical Engineering Research Center, Xi'an Siyuan University, Xi’an, China
Zhang Xuemei

Energy & Chemical Engineering Research Center, Xi'an Siyuan University, Xi’an, China
Li Dong

Energy & Chemical Engineering Research Center, Xi'an Siyuan University, Xi’an, China
Hao Jingyuan

Energy & Chemical Engineering Research Center, Xi'an Siyuan University, Xi’an, China

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APA Style

Ma Qinghua, Zhang Xuemei, Li Dong, Hao Jingyuan. (2021). Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). International Journal of Economy, Energy and Environment, 6(5), 110-113. https://doi.org/10.11648/j.ijeee.20210605.15

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ACS Style

Ma Qinghua; Zhang Xuemei; Li Dong; Hao Jingyuan. Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). Int. J. Econ. Energy Environ. 2021, 6(5), 110-113. doi: 10.11648/j.ijeee.20210605.15

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AMA Style

Ma Qinghua, Zhang Xuemei, Li Dong, Hao Jingyuan. Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE). Int J Econ Energy Environ. 2021;6(5):110-113. doi: 10.11648/j.ijeee.20210605.15

Copy | Download

@article{10.11648/j.ijeee.20210605.15,
  author = {Ma Qinghua and Zhang Xuemei and Li Dong and Hao Jingyuan},
  title = {Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)},
  journal = {International Journal of Economy, Energy and Environment},
  volume = {6},
  number = {5},
  pages = {110-113},
  doi = {10.11648/j.ijeee.20210605.15},
  url = {https://doi.org/10.11648/j.ijeee.20210605.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijeee.20210605.15},
  abstract = {In order to quantitatively study the metamorphism of coal, by calculating the changes of reflectivity with time and temperature and the changes of temperature with time and reflectivity, the results show that the temperature time reflectivity ternary coal metamorphism thermodynamic equation (Cmte) proposed by Mr. Wu Chonglong is feasible. Although it is only an empirical formula, the mathematical formula is more convenient and accurate than the diagram, The critical temperature of lignite is 49.3°C and that of long flame coal is 56.9°C. The empirical formula of temperature time reflectance is demonstrated to explain the metamorphism of coal. By compiling temperature reflection (time) maps of middle coal formation in Carboniferous, Jurassic and Cretaceous, this paper explains the concept of "the longer the thermal time, the higher the degree of metamorphism" with isothermal horizontal line or equal reflection vertical line. The temperature and effective metamorphic time in the literature of Nantong coalfield in Sichuan further prove the accuracy and practicability of Cmte. The mathematical formula of temperature time reflectance can not only know the cross verification temperature of time and reflectance, but also know the time with a difference of less than 1.4% from the original effective metamorphic time. It is proved that the empirical formula of temperature time reflectance can explain the metamorphism of coal.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Numerical Evaluation of the Coal Metamorphism Thermodynamics Equation (CMTE)
AU  - Ma Qinghua
AU  - Zhang Xuemei
AU  - Li Dong
AU  - Hao Jingyuan
Y1  - 2021/10/19
PY  - 2021
N1  - https://doi.org/10.11648/j.ijeee.20210605.15
DO  - 10.11648/j.ijeee.20210605.15
T2  - International Journal of Economy, Energy and Environment
JF  - International Journal of Economy, Energy and Environment
JO  - International Journal of Economy, Energy and Environment
SP  - 110
EP  - 113
PB  - Science Publishing Group
SN  - 2575-5021
UR  - https://doi.org/10.11648/j.ijeee.20210605.15
AB  - In order to quantitatively study the metamorphism of coal, by calculating the changes of reflectivity with time and temperature and the changes of temperature with time and reflectivity, the results show that the temperature time reflectivity ternary coal metamorphism thermodynamic equation (Cmte) proposed by Mr. Wu Chonglong is feasible. Although it is only an empirical formula, the mathematical formula is more convenient and accurate than the diagram, The critical temperature of lignite is 49.3°C and that of long flame coal is 56.9°C. The empirical formula of temperature time reflectance is demonstrated to explain the metamorphism of coal. By compiling temperature reflection (time) maps of middle coal formation in Carboniferous, Jurassic and Cretaceous, this paper explains the concept of "the longer the thermal time, the higher the degree of metamorphism" with isothermal horizontal line or equal reflection vertical line. The temperature and effective metamorphic time in the literature of Nantong coalfield in Sichuan further prove the accuracy and practicability of Cmte. The mathematical formula of temperature time reflectance can not only know the cross verification temperature of time and reflectance, but also know the time with a difference of less than 1.4% from the original effective metamorphic time. It is proved that the empirical formula of temperature time reflectance can explain the metamorphism of coal.
VL  - 6
IS  - 5
ER  -

Copy | Download