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    Wyświetlanie 1-3 z 3
    Tytuł:
    Moznosti utraceni CO2 v dotezovanych loziscich uhlovodiku
    Possibility of geosequestration of CO2 in exploited hydrocarbon deposits
    Autorzy:
    Bujok, P.
    Briza, K.
    Panek, P.
    Svozil, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/300065.pdf
    Data publikacji:
    2007
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    sekwestracja CO2
    wtórna eksploatacja
    redukcja emisji CO2
    geosequestration of CO2
    recovery
    reduction of CO2
    Opis:
    W referacie autorzy przedstawili problematykę redukcji emisji CO2, jego odseparowywania oraz możliwości długotrwałego magazynowania w odpowiednich magazynach z punktu widzenia geosekwestracji (użycia magazynów geosfery). Najbardziej przyszłościowym pod tym względem są częściowo sczerpane złoża węglowodorów. Poprzez składowanie w tych złożach CO2 z równoczesną wtórną eksploatacją złoża ropy naftowej osiąga się wzrost całkowitej produkcji ropy o 10-15%.
    The authors deal with problems of reduction of carbon dioxide emissions, carbon dioxide capture and possibilities of long-term storage in suitable storage sites, especially from the point of view of the so-called geosequestration (utilisation of geospheric sinks). It is hydrocarbon deposits where mining operations are being completed that seem to be the most suitable potential storage spaces. There, deposited CO2 sweeps out residual oil and increases the total recovery by 10-15%.
    Źródło:
    Wiertnictwo, Nafta, Gaz; 2007, 24, 1; 125-133
    1507-0042
    Pojawia się w:
    Wiertnictwo, Nafta, Gaz
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CO2 storing capacity in geologic formations in the Czech Republic
    Autorzy:
    Bujok, P.
    Klempa, M.
    Labus, K.
    Porzer, M.
    Panek, P.
    Rado, R.
    Gonzalez-Rodriguez, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/299299.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    CO2 storage
    CO2 storage in geologic formations in the Czech Republic
    boreholes for CO2 storage
    modelling of CO2 storage
    laboratory methods for CO2 storage
    Opis:
    The CO2 emission is a significant environmental problem threatening the sustained development of mankind. One of the possible ways of limiting the emission is the disposal of carbon dioxide in geologic formations.A pilot project of CO2 storage in geologic formations in the Czech Republic (REPP-CO2) is presented in this paper. The project is part of the Norwegian Fund and the research consortium (headed by the Czech Republic Geologic Office), with VSB-TU Ostrava as a participant. The VSB-TU Ostravais represented by the Faculty of Geology and Mining (HGF) and the Faculty of Metallurgy and Materials Science (FMMI) in the consortium.The research activity of the consortium mainly focuses on the development and improvement of selected laboratory methods, modelling and simulation, which are basic for the evaluation of safety of CO2 storing in geologic forma-tions. Thise paper presents the research conducted by the Faculty of Geology and Mining (HGF) VSB-TU Ostrava within the project.
    Źródło:
    AGH Drilling, Oil, Gas; 2015, 32, 4; 683-692
    2299-4157
    2300-7052
    Pojawia się w:
    AGH Drilling, Oil, Gas
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Na-P1 zeolite synthesis and its crystalline structure ripening through hydrothermal process using coal combustion by-products as substrates
    Autorzy:
    Kunecki, P.
    Panek, R.
    Wdowin, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/184573.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    energy industry
    environment pollutant
    earth ecosystem
    Opis:
    Energy industry sector is one of the major environment pollutants. This branch also generates significant amounts of by-products such as slugs, slug-ash mixtures, ashes and microspheres, which can be very harmful for the earth ecosystems. Statistically the microspheres (MIC) constitute from 0.6% to 2.5% of the total amount of post combustion wastes. MIC occurs mainly in fly ashes (less often in slugs) as the smallest, hollow, spherical particles. MIC is composed mainly of crystalline and amorphous aluminosilicate phases. The combustion conditions have strong influence on MIC composition. Mineral and chemical composition of MIC is very similar to F type of fly ashes; consequently there is a possibility to use them as substrates for zeolite synthesis. Zeolites are minerals from microporous, aluminosilicate group (Szala et al. 2015). Among others, they are characterized by specific channels and chambers occurrence in their structure, which results in a number of important features like: ion exchange, sorption, molecular sieve or catalytic properties. This is the reason for wide use of zeolites in numerous industrial sectors (Ahmaruzzaman 2010). The aim of this study is a synthesis of Na-P1 zeolite at semi-technical scale by conversion of microspheres under hydrothermal conditions in an alkaline medium. This study involves also research of Na-P1 zeolite structure ripening in order to optimize the synthesis conditions. Microspheres from Stalowa Wola Power Plant (Poland) were used as a substrate. For the synthesis of Na-P1 phase the following conditions were applied: 90 dm 3 of water, 15 kg of microsphere, 11 kg of sodium hydroxide (3 mol/dm 3 ), temperature: 80°C, and reaction time up to 26 h (Franus et al. 2014). The zeolite conversion was performed on semi-technical scale installation (Wdowin et al. 2014). During the conversion, samples were collected from the reactor after 2, 4, 6, 10, 14, 26 hours. To investigate the influence of time for zeolitization process efficiency these samples were analyzed in terms of chemical and mineral composition, structural and textural properties. The main attention was paid to the evolution of the Na-P1 unit cell parameters observed as a function of time (calculations and models were performed for every sample). The phase’s composition was determined with powder X-ray diffraction (XRD) method using a PANalytical X’pert MPD diffractometer (with a PW 3050/60 goniometer), Cu lamp, and a graphite monochromator. The analysis was performed within the angle range of 5–65 2θ. PANalytical X’Pert Highscore software was used to process the diffraction data. The identification of mineral phases was based on the PDF-2 release 2010 database formalized by the ICD and IZA-SC Database of Zeolite Structures. The experimental calculations of the unit cell parameters were performed using UnitCell software. The spatial model of Na-P1 zeolite cell was prepared using Mercury 3.7 Windows software. The morphological forms and the chemical composition of the main mineral components were determined with scanning electron microscope (SEM) FEI Quanta 250 FEG equipped with the SE detector and a system of chemical composition analysis based on energy dispersive X-ray-EDS of EDAX company. N 2 adsorption-desorption measurements were carried out at 77 K using ASAP 2020 volumetric adsorption analyzer (Micromeritics). The specific surface areas (S BET ) of the samples were evaluated using the standard Brunauer–Emmett–Teller (BET) method for nitrogen adsorption data in the range of relative pressure p / p 0 from 0.06 to 0.3. The total pore volumes were estimated from single-point adsorption at a relative pressure of 0.98. XRD data indicates that main phases in microsphere are amorphous aluminosilicate glass, mullite and quartz. The obtained product is dominated by Na-P1 phase. Experimental calculations of cell parameters and fabricated models confirm crystallographic similarity to Na-P1 pattern. Noteworthy is the fact that the unit cell parameters depend on reaction time. Calculations indicate that the cell parameters (walls length: a , b , c and cell volume) increase with time towards to pattern values. This phenomenon may be interpreted as a ripening of crystalline structure. An in-depth look at this matter can lead to better estimation of synthesis conditions, which have a significant impact to the total cost of zeolites production – especially at a larger scale. SEM shows progressive dissolution (also as a function of time) of aluminosilicate glass in favor of crystallization of zeolite phase. EDS analysis confirms similarity of chemical composition of the obtained samples to a standard Na-P1 zeolite. Calculated textural properties indicate increase of S BET with the reaction time. Simultaneously, the average pore diameters decrease. The S BET of synthetized Na-P1 was 4.62 m 2 /g after 2 h but it increased to 47.92 m 2 /g after 26 h. This is an effect of growing contribution of zeolite phase in relation to the initial substrates in the sample during the reaction time. The experimental conditions allowed synthesizing Na-P1 zeolite from microsphere particles in the prototype installation. Zeolitization process strongly influences the textural properties by increasing S BET and improving pore structure. The microsphere from Stalowa Wola Power Plant is a promising material for the synthesis of Na-P1 zeolite in the prototype installation. Still, the reaction parameters should be reconsidered, basing on the obtained results, in order to reduce the cost of the zeolite production as much as possible. This is required before proceeding to the full technical production scale. To observe increase of zeolite amount in entirety synthesis batch (and to link it with cell behavior) the Rietveld analysis will be provided.
    Źródło:
    Geology, Geophysics and Environment; 2016, 42, 1; 90-91
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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