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Wyszukujesz frazę "pyrolysis gas" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    The influence of hygienisation of sewage sludge on the process of pyrolysis
    Autorzy:
    Cizkova, A.
    Juchelkova, D.
    Raclavska, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/185279.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wapno
    gaz
    osad
    pyrolysis
    sewage sludge
    pyrolytic gas
    lime
    Opis:
    The aim of this work was to determine the influence of liming on the process of pyrolysis. Three samples of sludge from two wastewater treatment plants were selected for this study on pyrolysis: sludge without liming and limed sludge from the Central Wastewater Treatment Plant in Ostrava and sludge from the Wastewater Treatment Plant in Sviadnov. The samples had different content of calcite (CaCO3). The limed sludge contained 7% of CaCO3, sludge without liming 3.8% and sludge without liming from WWTP Sviadnov contained 0.5% of calcite. The results of laboratory pyrolysis proved that limed sludge released the maximum amount of carbon - 55.46 %, while sludge without liming from WWTP Sviadnov released only 48.92%. Calcite produces during its decomposition CaO and the product influences the pyrolysis process because it supports cracking of volatile organic compounds.
    Źródło:
    Chemical and Process Engineering; 2011, 32, 1; 57-68
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of coking dynamics for wet coal charge
    Autorzy:
    Kardaś, D.
    Polesek-Karczewska, S.
    Ciżmiński, P.
    Stelmach, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/185719.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pyrolysis
    devolatilisation
    vaporisation
    internal gas pressure
    piroliza
    odparowanie
    wewnętrzne ciśnienie gazu
    Opis:
    A one-dimensional transient mathematical model describing thermal and flow phenomena during coal coking in an oven chamber was studied in the paper. It also accounts for heat conduction in the ceramic oven wall when assuming a constant temperature at the heating channel side. The model was solved numerically using partly implicit methods for gas flow and heat transfer problems. The histories of temperature, gas evolution and internal pressure were presented and analysed. The theoretical predictions of temperature change in the centre plane of the coke oven were compared with industrialscale measurements. Both, the experimental data and obtained numerical results show that moisture content determines the coking process dynamics, lagging the temperature increase above the water steam evaporation temperature and in consequence the total coking time. The phenomenon of internal pressure generation in the context of overlapping effects of simultaneously occurring coal transitions – devolatilisation and coal permeability decrease under plastic stage – was also discussed.
    Źródło:
    Chemical and Process Engineering; 2015, 36, 3; 291-303
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy Balance Sheet of a Semi Operational Thermic System
    Autorzy:
    Honus, S.
    Sassmanová, V.
    Frantík, J.
    Bukowski, P.
    Juchelková, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/185341.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bilans energetyczny
    piroliza
    odpady
    spalanie
    gaz procesowy
    energy balance
    pyrolysis
    waste
    combustion
    process gas
    Opis:
    The article is focused onthe energetical balance of a technical system for the conversion of crushed tyres by pyrolysis. Process temperatures were set in the range from 500 to 650°C. Mass input of the material was 30 kg per hour. The aim of the article is to answer the following questions as regards the individual products: Under which process conditions can the highest quality of the individual products related to energy be reached? How does the thermal efficiency of the system change in reaction to various conditions of the process? On the basis of the experimental measurements and calculations, apart from other things, it was discovered that the pyrolysis liquid reaches the highest energetic value, i.e. 42.7 MJ.kg-1, out of all the individual products of the pyrolysis process. Generated pyrolysis gas disposes of the highest lower calorific value 37.1 MJ.kg-1 and the pyrolysis coke disposes of the maximum 30.9 MJ kg-1. From the energetic balance, the thermal efficiency of the experimental unit under the stated operational modes ranging from about 52 % to 56 % has been estimated. Individual findings are elaborated on detail in the article.
    Źródło:
    Chemical and Process Engineering; 2014, 35, 3; 317-329
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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