Change of the expansion pressure of middle stage metamorphism coal during its oxidation

Miroshnichenko, D.; Kaftan, Y.; Desna, N.; Sytnik, A.

Artykuł - szczegóły

Tytuł artykułu

Change of the expansion pressure of middle stage metamorphism coal during its oxidation

Autorzy

Miroshnichenko D. , Kaftan Y. , Desna N. , Sytnik A.

Identyfikatory

Warianty tytułu

Zmiana ciśnienia rozprężania średniego stopnia metamorfizmu węgla w trakcie utleniania

Języki publikacji

Abstrakty

Experiments show that the oxidation of bituminous coal from the Zasyadko mine at 60°C in laboratory conditions increases its expansion pressure from 5.2 to 30.0 kPa for 28.3 days. Oxidation occurs in several stages, as already demonstrated for Ukrainian and imported coals at different metamorphic stages when oxidation was performed in the laboratory and in industrial trials at other temperatures. The constant rate at the initial stage of oxidation is 0.4095∙10^-4 min^-1 at 60°C. Saturation of the middle stage metamorphism coal with oxygen during oxidation increases the viscosity of the plastic mass that is being formed and increases the volume of gas and vapor products. Ultimately, that results in increase in the expansion pressure as the coal is oxidized.

Doświadczenia wykazują, że utlenianie węgla kamiennego z kopalni Zasyadko w temperaturze 60°C w warunkach laboratoryjnych zwiększa ciśnienia rozprężania od 5,2 do 30,0 kPa przez 28,3 dni. Utlenianie zachodzi w kilku etapach, jak już wykazano dla ukraińskich i importowanych węgli o różnych etapach metamorfizmu podczas utleniania w laboratorium oraz w badaniach przemysłowych w innych temperaturach. Stała szybkość w początkowym etapie utleniania wynosi 0,4095 10^-4 min^-1 w temperaturze 60° C. Nasycenie węgla o średnim stopniu metamorfizmu tlenem w trakcie utleniania zwiększa lepkość uplastycznionej masy węgla, która się tworzy i zwiększa ilość produktów gazowych i parowych. Ostatecznie, prowadzi to do wzrostu ciśnienia rozprężania w trakcie utleniania węgla.

Słowa kluczowe

coal oxidation expansion pressure

węgiel utlenianie ciśnienie rozprężania

Wydawca

Wydawnictwo Górnicze Sp. z o.o.

Czasopismo

Karbo

Rocznik

2016

Tom

Nr 1-2

Strony

24--29

Opis fizyczny

Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Miroshnichenko D.

dvmir79@gmail.com

Ukrainian State Research Institute for Carbochemistry (UKHIN)

autor

Kaftan Y.

Ukrainian State Research Institute for Carbochemistry (UKHIN)

autor

Desna N.

Ukrainian State Research Institute for Carbochemistry (UKHIN)

autor

Sytnik A.

Ukrainian State Research Institute for Carbochemistry (UKHIN)

Bibliografia

1. Miroshnichenko D.V., Desna N.A, and Ulanovskiy M.L., Oxidation of coal in industrial conditions. 1. Kinetics of natural oxidation, Coke Chem., 2014, vol. 57, no.7, pp. 276–283.
2. Miroshnichenko D.V., Desna N.A, and Kaftan Yu.S., Oxidation of coal in industrial conditions. 2. Modification of the plastic and viscous properties on oxidation, Coke Chem., 2014, vol. 57, no. 10, pp. 375–380.
3. Miroshnichenko D.V., Desna N.A, and Kaftan Yu.S., Oxidation of coal in industrial conditions. 3. Mechanical strength of coke, Coke Chem., 2014, vol. 57, no. 12, pp. 453–459.
4. Miroshnichenko D.V., Desna N.A, and Kaftan Yu.S., Oxidation of coal in industrial conditions. 4. Coal temperature in heap storage, Coke Chem., 2015, vol. 58, no. 2, pp. 43–48.
5. Miroshnichenko D.V., Desna N.A, and Kaftan Yu.S., Oxidation of coal in industrial conditions. 5. Limiting storage times, Coke Chem., 2015, vol. 58, no. 4, pp. 124–128.
6. Khrisanfova A.I. and Litvinov V.L., Tekhnologiya khraneniya uglei i meropriyatiya po sokrashcheniyu poter, topliva (Technology of Coal Storage and Measures for Prevention of Fuel Losses), Moscow: Nedra, 1970.
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14. Miroshnichenko D.V., Drozdnik I.D., Kaftan Yu.S., Ivanova E.V., Sirokotyaga K.N., and Desna N.A., Kinetic characteristics of coal oxidation, Coke Chem., 2012, vol. 55, no. 3, pp. 87–96.
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18. Miroshnichenko D.V., Drozdnik I.D., Kaftan Yu.S., and Desna N.A., Oxidation of Pokrovskoe coal in laboratory and natural conditions. 1. Kinetics of oxidation and technological properties, Coke Chem., 2015, vol. 58, no. 3, pp. 79–87.
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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-7b9303b5-082e-4740-89ac-b33ea3aabffd