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    Wyświetlanie 1-5 z 5
    Tytuł:
    Thermodynamic analysis of an innovative steam turbine power plant with oxy-methane combustors
    Autorzy:
    Kindra, Vladimir Olegovich
    Osipov, Sergey Konstantinovich
    Zlyvko, Olga Vladimirovna
    Shcherbatov, Igor Alexandrovich
    Sokolov, Vladimir Petrovich
    Powiązania:
    https://bibliotekanauki.pl/articles/1955067.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Combined cycle power plant
    carbon capture
    storage system
    precombustion capture
    post-combustion capture
    oxy-fuel combustion
    Opis:
    The Rankine cycle steam turbine power plants make a base for world electricity production. The efficiency of modern steam turbine units is not higher than 43–45%, which is remarkably lower compared to the combined cycle power plants. However, an increase in steam turbine power plant efficiency could be achieved by the rise of initial cycle parameters up to ultra-supercritical values: 700–780◦C, 30–35 MPa. A prospective steam superheating technology is the oxy-fuel combustion heating in a sidemounted combustor located in the steam pipelines. This paper reviews thermal schemes of steam turbine power plants with one or two side-mounted steam superheaters. An influence of the initial steam parameters on the facility thermal efficiency was identified and primary and secondary superheater parameters were optimized. It was found that the working fluid superheating in the side-mounted oxy-methane combustors leads to an increase of thermal efficiency higher than that with the traditional boiler superheating in the initial temperature ranges of 700–780◦C and 660–780◦C by 0.6% and 1.4%, respectively.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 4; 123-140
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of CO2 capture efficiency in post combustion CCS technology in terms of varying flow conditions
    Autorzy:
    Niegodajew, P.
    Asendrych, D.
    Drobniak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/240433.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CO2
    CCS
    post-combustion capture
    chemical absorption
    CFD
    absorpcja chemiczna
    Opis:
    The paper deals with the computational fluid dynamics modelling of carbon dioxide capture from flue gases in the post combustion-capture method, one of the available carbon capture and storage technologies. 30% aqueous monoethanolamine solution was used as a solvent in absorption process. The complex flow system including multiphase countercurrent streams with chemical reaction and heat transfer was considered to resolve the CO2 absorption. The simulation results have shown the realistic behaviour and good consistency with experimental data. The model was employed to analyse the influence of liquid to gas ratio on CO2 capture efficiency.
    Źródło:
    Archives of Thermodynamics; 2013, 34, 4; 123-136
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic analysis of cycle arrangements of the coal-fired thermal power plants with carbon capture
    Autorzy:
    Kindra, Vladimir Olegovich
    Milukov, Igor Alexandrovich
    Shevchenko, Igor Vladimirovich
    Shabalova, Sofia Igorevna
    Kovalev, Dmitriy Sergeevich
    Powiązania:
    https://bibliotekanauki.pl/articles/1955057.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    combined cycle power plant
    carbon capture
    storage system
    precombustion capture
    post-combustion capture
    oxy-fuel combustion
    Opis:
    The electricity production by combustion of organic fuels, especially coal, increases the atmospheric CO2 content, which contributes to global warming. The greenhouse gas emissions by the power production industry may be reduced by the application of CO2 capture and storage systems, but it remarkably decreases the thermal power plant (TPP) efficiency because of the considerable increase of the auxiliary electricity requirements. This paper describes the thermodynamic analysis of a combined cycle TPP with coal gasification and preliminary carbon dioxide capture from the syngas. Utilization of the heat produced in the fuel preparation increases the TPP net efficiency from 42.3% to 47.2%. Moreover, the analysis included the combined cycle power plant with coal gasification and the CO2 capture from the heat recovery steam generator exhaust gas, and the oxy-fuel combustion power cycle with coal gasification. The coal-fired combined cycle power plant efficiency with the preliminary CO2 capture from syngas is 0.6% higher than that of the CO2 capture after combustion and 9.9% higher than that with the oxy-fuel combustion and further CO2 capture. The specific CO2 emissions are equal to 103 g/kWh for the case of CO2 capture from syngas, 90 g/kWh for the case of CO2 capture from the exhaust gas and 9 g/kWh for the case of oxy-fuel combustion.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 4; 103-121
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of CO2 compression systems on the compressor power required for a pulverized coal-fired power plant in post-combustion carbon dioxide sequestration
    Wpływ procesu sprężania na moc sprężarek do dwutlenku węgla wychwyconego ze spalin bloku energetycznego na pył węglowy
    Autorzy:
    Witkowski, A.
    Majkut, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/139795.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    post-combustion CO2 capture
    compression process
    pumping
    compression power
    integration into the power plant
    wychwytywanie dwutlenku węgla po procesie spalania
    proces sprężania
    pompowanie
    moc sprężania
    integracja z siłownią
    Opis:
    The aim of this paper is to analyze various CO2 compression processes for post-combustion CO2 capture applications for 900 MW pulverized coal-fired power plant. Different thermodynamically feasible CO2 compression systems will be identified and their energy consumption quantified. A detailed thermodynamic analysis examines methods used to minimize the power penalty to the producer through integrated, low-power compression concepts. The goal of the present research is to reduce this penalty through an analysis of different compression concepts, and a possibility of capturing the heat of compression and converting it to useful energy for use elsewhere in the plant.
    Celem niniejszej pracy jest analiza różnych procesów sprężania CO2 wychwyconego ze spalin bloku energetycznego o mocy 900 MW na pył węglowy. Przedstawiono szereg różnych procesów sprężania i określono zużycie energii każdego z nich. Szczegółowa analiza termodynamiczna umożliwiła określenie sposobów zminimalizowania kosztów energii poprzez dobór najsprawniejszego procesu sprężania oraz wykorzystanie ciepła sprężania w obiegu cieplnym siłowni.
    Źródło:
    Archive of Mechanical Engineering; 2012, LIX, 3; 343-360
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The improvement of environmental characteristics of the combined cycle power plant by the implementation of the carbon capture installation
    Autorzy:
    Kotowicz, J.
    Brzęczek, M.
    Job, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/134906.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    combined cycle power plant
    post-combustion technology
    chemical absorption
    carbon capture installation
    power plant efficiency
    ecological characteristics
    Opis:
    The paper describes a combined cycle power plant with carbon capture installation in a post-combustion technology. Carbon dioxide is separated from flue gas by using a chemical absorption method with monoethanolamine (MEA) as a sorbent. Separated carbon dioxide is compressed in order to prepare for transportation to the storage place. This paper identifies the electric efficiencies and other characteristic parameters of power plants before and after implementation of CO2 capture installation, as well as the power plant efficiency drop, and the improvement of ecological characteristics related to the implementation of this installation. The implementation of the installation described herein is associated with the efficiency loss caused by the auxiliary power for additional installations. The CO2 separation installation is powered by heat energy required for reclaiming the sorbent. This energy is taken in the form of steam extracted from the steam cycle, thus reducing the steam turbine power output, while the CO2 compression installation is powered by electric energy.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 19-24
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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