The Energetics Of Methane Desorption

Category: Ukrainean-polish sympozium

THE ENERGETICS OF METHANE DESORPTION

ON HARD COALS

A. Nodzenski1, S. Holda2

1Wydział Paliw i Energii, Zakład Podstawowych Problemów Adsorpcji i Fizykochemii Sorbentów Mineralnych

2Wydział Paliw i Energii, Katedra Chemii Górniczej

The gas contained in a coal bed is one of the essential factors in the phenomena of the outburst of gases and rocks. In this paper the results of the investigations on the high-pressure methane sorption and desorption on selected coals and application of the thermodynamic method to the description of the process of gas liberation from a coal bed are presented. This method enables the maximum volume of work which can be performed by a gas liberated from a coal bed to be calculated. The application of the virial sorption equation for the description of experimental data enabled to achieve the energetic properties of the coal - methane system. The volume of gas desorption and expansion works, the temperature curves and the isosteric sorption heat values were calculated. The application of the thermal sorption equation made also possible the calculation of the total "store" of work for a gas contained in a coal, at a given temperature and pressure as well as the decrease in coal temperature during desorption. These parameters can be used as an indication of outburst ability.



Related articles::

  • Prediction Of Active Carbon Behaviour
  • Expansion And Contraction Of Coal At Various Metamorphism Under Influence Of Ch4 And Mixture Ch4 And Co2 Sorption/desorption Process
  • Effects Of The Modification Of The Na+/cao
  • Studies Of Energetical And Geometrical Heterogeneity Of Solid Surfaces
  • Analysis Of Energetic Heterogeneity Of Hgba2ca2cu3o8+ Based On Programmed Thermodesorption Under The Quasi-isothermal Conditions From The Q-tg And Q-dtg Data
  • Thermal Desorption Mass Spectrometry
  • A New Quantitative Analysis Of The Surface Energetic Heterogeneity Of Catalyst
  • Nickel Promoted Catalysts In Reforming Of
  • The Change Of Adsorption Properties Of
  • The Studies Of Adsorption And Total Heterogeneity Properties Of Solid Surfaces By Means Of The Thermal Analysis
  • The Estimation Of The Total Heterogeneity
  • Adsorption Characteristics Of Powders Of Nanometric Gallium Nitride And Aluminum Nitride
  • Adsorption Of Some Carbohydrates
  • Adsorption Of Poly(1-vinyl-2-pyrrolidone) On The Surface Of Highly Dispersed Amorphous Silica
  • Conversion Of Natural Gas In The Aerosol
  • Structural, Adsorption And Catalytic Properties
  • Adsorption Properties Of The In Situ Synthesized Granulated Faujasites
  • The Change Of The Adsorption Properties
  • On The Surface Properties Of Carbon-silica Adsorbents (carbosils) Modified In The Process
  • Prediction Of Henry’s Law Constants
  • Mass Spectrometry Of Thermal Transformations
  • On The Accuracy And The Repeatability Of Results Of Benzene Vapour Adsorption Measurements
  • Zeolite-containing Microspheres On The Basis
  • Influence Of Preparation Conditions Of Mixed-valence Con+/zsm-5 Zeolites On Their Adsorption
  • Regeneration Of Adsorbents By Using Liquid, Subcritical And Supercritical Carbon Dioxide
  • Changes Of Porous Structure And Surface Nature
  • Biosorption Phenomenon On A Porous Carbon Surface
  • Texture Changes After Oxidative Modification
  • Ion-exchange Assisted Electrodialysis For Copper Ions With Zirconium Phosphate Usage
  • Adsorption Of Water And Organics