1991 International Conference on Coal Science Proceedings
eBook - ePub

1991 International Conference on Coal Science Proceedings

Proceedings of the International Conference on Coal Science, 16–20 September 1991, University of Newcastle-Upon-Tyne, United Kingdom

  1. 1,056 pages
  2. English
  3. ePUB (mobile friendly)
  4. Available on iOS & Android
eBook - ePub

1991 International Conference on Coal Science Proceedings

Proceedings of the International Conference on Coal Science, 16–20 September 1991, University of Newcastle-Upon-Tyne, United Kingdom

About this book

1991 International Conference on Coal Science Proceedings

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Pyrolysis and low temperature carbonisation – Posters

KINETICS OF PYROLYSIS OF COALS VARYING IN RANK

J. Andrés, J. Ibarra, R. Moliner and M. Muñoz., Instituto de Carboquímica. CSIC. P.O. Box 589, 50080 Zaragoza, Spain

Publisher Summary

Kinetic parameters reported for overall coal decomposition as well as individual volatile species present discrepancies that could be attributed to both the type of coal and the experimental technique employed. This chapter discusses a study in which distributed kinetic parameters are deduced for coals to obtain some data about the dependence of pyrolysis rates on coal rank. A computerized program was used to fit the experimental data. The cumulative evolution curves of CO2, CH4, and S-compounds for the four coals tested were obtained. The variations of kinetic parameters with rank do not seem to follow a definitive trend. A clearer trend is observed for the variation of standard deviation with rank. The kinetic parameters obtained for CH4 evolution show a clear independence of coal rank. Distributed kinetic parameters for CO2, CH4, and S-compounds evolution rate from pyrolysis of four coals ranging from peat to bituminous coals have been deduced b...

Table of contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Coal as a molecular solid (I)
  6. Coal as a molecular solid (II)
  7. Chemical composition
  8. Analytical and spectroscopic methods (I)
  9. Analytical and spectroscopic methods (II)
  10. Petrology and chemical characterisation – Posters
  11. Chemical reactions
  12. Oxidation and weathering
  13. Chemical reactions – Posters
  14. Combustion and gasification – fundamentals and kinetics
  15. Gasification
  16. Combustion
  17. NOx and SOx (I)
  18. NOx and SOx (II)
  19. Ash and minerals
  20. Combustion and gasification – Posters
  21. Pyrolysis and low temperature carbonisation – general
  22. Pyrolysis and combustion – kinetics and mechanisms
  23. Pyrolysis and low temperature carbonisation – intermediates and final products
  24. Pyrolysis and low temperature carbonisation – thermoplasticity
  25. Pyrolysis and low temperature carbonisation – Posters
  26. Liquefaction and hydropyroiysis – kinetics and mechanisms
  27. Liquefaction and hydropyroiysis – catalysis (I)
  28. Liquèfaction and hydropyroiysis – catalysis (II)
  29. Liquefaction and hydropyrolysis – macerals
  30. Liquefaction and hydropyrolysis – solvents
  31. Liquefaction and hydropyrolysis – upgrading
  32. Coprocessing
  33. Liquefaction and hydropyrolysis – models and physical effects
  34. Liquefaction and hydropyrolysis – Posters
  35. Chemical and physical beneficiation
  36. Bulk and surface properties
  37. Material science – Posters
  38. Sulphur in coal
  39. Heteroatoms in coal
  40. Desulphurisation
  41. Environmental coal science – Posters
  42. Author index