Klyuyev E.S. Analysis of physical-and-chemical processes at thermal impact on carbon-contained materials

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Parent Category: Geo-Technical Mechanics, 2015

Category: Geo-Technical Mechanics, 2015, Issue 124

 

ANALYSIS OF PHYSICAL-AND-CHEMICAL PROCESSES AT THERMAL IMPACT ON CARBON-CONTAINED MATERIALS

¹Klyuyev E.S.

¹IGTM NAS of Ukraine

UDC 622.324: 622.278: 536.12

Abstract. The paper presents the investigation results on processes of physical-and-chemical transformations occurred in the carbon-contained materials exposed to the thermal impact for pro-ducing gases by mining geotechnologies.

The paper describes a model of thermal impacting on the carbon-contained materials, presented as a binary coal-and-rock mixture, with taking into account heat exchange and porosity of the rock medium with limited access for air. On the basis of simulation of nonstationary modes of the ther-mal impact, physical laws were established for the process temperature changing depending on composition and properties of the carbon-contained materials. Heat criteria were defined, at which physical and chemical changes are intensified in carbon-contained materials. Catalysis parameters were described at which the process rate and specific productivity increase without a temperature rise. It is stated that physical and chemical changes in the rock medium are intensified at presence of salts and oxides of alkali metals and when metallurgical or boiler slag is used.

The findings have allowed to substantiate and improve accuracy of the non-stationary model of thermal impact on the carbon-contained materials; to determine the process parameters for produc-ing gas and identify the most appropriate composition of the gas phase; and to reduce the oxidants consumption to minimum.

Keywords: thermal impact, carbon-contained materials, binary mixture, modelling, catalysis

 

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About the author

Klyuyev Eduard Sergeyevich, Master of Science (Tech.), Junior Researcher in Department of Mineral Mining at Great Depths, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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