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Triple Role of Water in View of Spontaneous Heating of Coal

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F07%3AA0800KRK" target="_blank" >RIV/61988987:17310/07:A0800KRK - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Triple Role of Water in View of Spontaneous Heating of Coal

  • Original language description

    Calorimetric investigation has been applied to study the ?oxygen-coal-water?system at low temperature range. As a result, three different roles for water with respect to spontaneous oxidation of coal have been distinguished. The first role concerns the proportions between the heat of phase transition of water and the heat of coal oxidation. The second role is connected with the actual content of coal moisture during oxidation of the coal. Finally, the third role is related to the previous contact of liquid water with pre-heated coal as a certain analogy with extinguishing the spontaneous combustion site by water. Such a water attack on coal was ascertained to result in chemical changes in coal structure, and, as a consequence, a noteworthy rise in heatevolution of subsequent oxidation of the coal was found.

  • Czech name

    Trojí úloha vody z hlediska procesu samovzněcování uhlí

  • Czech description

    Metoda kalorimetrie byla využita k postihnutí tepelných efektů při studiu systému ?kyslík ? voda ? uhlí?. Byly zjištěny tři základní role vody ve vztahu k procesu samovzněcovací oxidace uhlí. První se týká proporcí mezi kondenzačním teplem vodní páry a teplem oxidace uhlí. Druhá je spjata s aktuálním obsahem vody při oxidaci uhlí. Třetí role souvisí s kontaktem kapalné vody a zahřátého uhlí, tedy jakési analogie při hašení uhlí vodou. Bylo prokázáno, že takovéto působení vody způsobuje chemické změny napovrchu uhlí, což vede ke zvýšení jeho oxireaktivity.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA105%2F06%2F0630" target="_blank" >GA105/06/0630: Modelling the distribution of the coal oxidation heat in the heterogenous porous surroundings</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    ICCS and T - Short abstracts

  • ISBN

    92-9029-437-X

  • ISSN

  • e-ISSN

  • Number of pages

    4

  • Pages from-to

    62-65

  • Publisher name

    University of Nottingham

  • Place of publication

    University of Nottingham

  • Event location

    University of Nottingham

  • Event date

    Aug 28, 2007

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article