Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "membrane separation" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-15 z 15
    Tytuł:
    Membrane separation of carbon dioxide in the integrated gasification combined cycle systems
    Autorzy:
    Kotowicz, J.
    Skorek-Osikowska, A.
    Janusz-Szymańska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240308.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    IGCC
    separacja membranowa
    CCS
    membrane separation
    Opis:
    Integrated gasification combined cycle systems (IGCC) are becoming more popular because of the characteristics, by which they are characterized, including low pollutants emissions, relatively high efficiency of electricity production and the ability to integrate the installation of carbon capture and storage (CCS). Currently, the most frequently used CO2 capture technology in IGCC systems is based on the absorption process. This method causes a significant increase of the internal load and decreases the efficiency of the entire system. It is therefore necessary to look for new methods of carbon dioxide capture. The authors of the present paper propose the use of membrane separation. The paper reviews available membranes for use in IGCC systems, indicates, inter alia, possible places of their implementation in the system and the required operation parameters. Attention is drawn to the most important parameters of membranes (among other selectivity and permeability) influencing the cost and performance of the whole installation. Numerical model of a membrane was used, among others, to analyze the influence of the basic parameters of the selected membranes on the purity and recovery ratio of the obtained permeate, as well as to determine the energetic cost of the use of membranes for the CO2 separation in IGCC systems. The calculations were made within the environment of the commercial package Aspen Plus. For the calculations both, membranes selective for carbon dioxide and membranes selective for hydrogen were used. Properly selected pressure before and after membrane module allowed for minimization of energy input on CCS installation assuring high purity and recovery ratio of separated gas.
    Źródło:
    Archives of Thermodynamics; 2010, 31, 3; 145-164
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The separation of carbon dioxide from CO2/N2/O2 mixtures using polyimide and polysulphone membranes
    Autorzy:
    Jaschik, M.
    Tańczyk, M.
    Janusz-Cygan, A.
    Wojdyła, A.
    Warmuziński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/185496.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    membrane separation
    modified polyimide
    modified polysulphone
    CO2 capture
    separacja membranowa
    wychwytywanie CO2
    Opis:
    Results are presented concerning the separation of the mixtures of carbon dioxide, nitrogen and oxygen in membrane modules with modified polysulphone or polyimide as active layers. The feed gas was a mixture with composition corresponding to that of a stream leaving stage 1 of a hybrid adsorptivemembrane process for the removal of CO2 from dry flue gas. In gas streams containing 70 vol.% of CO2, O2 content was varied between 0 and 5 vol.%. It is found that the presence of oxygen in the feed gas lowers the purity of the product CO2 in all the modules studied, while the recovery depends on the module. In the PRISM module (Air Products) an increase in O2 feed concentration, for the maximum permeate purity, led to a rise in CO2 recovery, whereas for the UBE modules the recovery did not change.
    Źródło:
    Chemical and Process Engineering; 2018, 39, 4; 449--456
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of selected parameters on the efficiency and economic charactersistics of the oxy-type coal unit with a membrane-cryogenic oxygen separator
    Autorzy:
    Kotowicz, J.
    Berdowska, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/240290.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oxygen production
    membrane air separation
    produkcja tlenu
    membranowy separator
    Opis:
    In this paper a 600 MW oxy-type coal unit with a pulverized bed boiler and a membrane-cryogenic oxygen separator and carbon capture installation was analyzed. A membrane-cryogenic oxygen separation installation consists of a membrane module and two cryogenic distillation columns. In this system oxygen is produced with the purity equal to 95%. Installation of carbon capture was based on the physical separation method and allows to reduce the CO2 emission by 90%. In this work the influence of the main parameter of the membrane process – the selectivity coefficient, on the efficiency of the coal unit was presented. The economic analysis with the use of the break-even point method was carried out. The economic calculations were realized in view of the break-even price of electricity depending on a coal unit availability.
    Źródło:
    Archives of Thermodynamics; 2016, 37, 1; 73-85
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modification of polypropylene membranes by ion implantation
    Autorzy:
    Kotra-Konicka, K.
    Kalbarczyk, J.
    Gac, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/185296.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ion implantation
    polymer membranes
    membrane separation
    polymer surface modification
    implantacja jonów
    membrany polimerowe
    separacja membranowa
    polimerowa modyfikacja powierzchni
    Opis:
    The influence of ion implantation on the structure and properties of polymers is a very complex issue. Many physical and chemical processes taking place during ion bombardment must be taken into consideration. The complexity of the process may exert both positive and negative influence on the structure of the material. The goal of this paper is to investigate the influence of H+, He+ and Ar+ ion implantation on the properties of polypropylene membranes used in filtration processes and in consequence on fouling phenomena. It has appeared that the ion bombardment caused the chemical modification of membranes which has led to decrease of hydrophobicity. The increase of protein adsorption on membrane surface has also been observed.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 3; 331-339
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technology of oxygen production in the membrane-cryogenic air separation system for a 600 MW oxy-type pulverized bed boiler
    Autorzy:
    Berdowska, S.
    Skorek-Osikowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/240451.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kriogeniczny rozdział powietrza
    membranowy separator
    produkcja tlenu
    cryogenic air separation
    membrane air separation
    oxygen production
    Opis:
    In this paper the results of the thermodynamic analysis of the oxy-combustion type pulverized bed boiler integrated with a hybrid, membrane-cryogenic oxygen separation installation are presented. For the calculations a 600 MW boiler with live steam parameters at 31.1 MPa /654.9[degrees]C and reheated steam at 6.15 MPa/672.4[degrees]C was chosen. In this paper the hybrid membrane-cryogenic technology as oxygen production unit for pulverized bed boiler was proposed. Such an installation consists of a membrane module and two cryogenic distillation columns. Models of these installations were built in the Aspen software. The energy intensity of the oxygen production process in the hybrid system was compared with the cryogenic technology. The analysis of the influence of membrane surface area on the energy intensity of the process of air separation as well as the influence of oxygen concentration at the inlet to the cryogenic installation on the energy intensity of a hybrid unit was performed.
    Źródło:
    Archives of Thermodynamics; 2012, 33, 3; 65-76
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling of a supercritical power plant with an oxy type pulverized fuel boiler, a carbon dioxide capture unit and a ‘four-end’ type membrane air separator
    Modelowanie elektrowni na parametry nadkrytyczne z kotłem pyłowym typu oxy, instalacją cc oraz membranowym separatorem powietrza typu ‘four-end’
    Autorzy:
    Kotowicz, J.
    Michalski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/172908.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    modelowanie elektrowni
    kocioł oxy
    membrana typu four-end
    separacja membranowa
    elektrociepłownia nadkrytyczna
    power plant modelling
    oxy boiler
    four-end membrane
    membrane separation
    supercritical power plant
    Opis:
    W artykule analizowano elektrownie o mocy 600 MW i parametrach pary świeżej 30 MPa/650 °C i wtórnej 6 MPa/670 °C. Elektrownia wyposażona jest w następujące instalacje: kocioł pyłowy typu oxy, wysokotemperaturową membranę do separacji powietrza typu ‘four-end’ oraz instalację przygotowania i sprężania CO2. Wymienione instalacje zostały zamodelowane. Przy założeniu stałej mocy brutto analizowanej elektrowni wyznaczono zapotrzebowanie na moc zamodelowanych instalacjach, sprawność obiegu parowego oraz sprawność termiczną kotła. Wielkości te wyznaczono w funkcji stopnia odzysku tlenu w membranie. Pozwoliło to wyznaczyć sprawność wytwarzania energii elektrycznej netto.
    The analysis of a 600 MW supercritical power plant with parameters of life steam at 30 MPa/650 °C and of reheated steam 6 MPa/670 °C was made. Power plant is equipped with the following units: oxy type pulverized fuel boiler, ‘four-end’ high temperature membrane air separator and carbon dioxide capture system which were modeled. With the assumption of a constant gross power of the analyzed power plant, the thermal efficiency of the boiler and the steam cycle efficiency were calculated. These parameters were designated as a function of the recovery rate of oxygen in the air separation unit. This allowed to determine gross and net efficiency of electricity generation.
    Źródło:
    Archiwum Energetyki; 2012, 42, 2; 73-83
    0066-684X
    Pojawia się w:
    Archiwum Energetyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Membrane gas separation module with pulsed retentate for low-permeable component recovery
    Autorzy:
    Battalov, Stanislav V.
    Trubyanov, Maxim M.
    Puzanov, Egor S.
    Sazanova, Tatyana S.
    Drozdov, Pavel N
    Vorotyntsev, Ilya V.
    Powiązania:
    https://bibliotekanauki.pl/articles/185429.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    membrane gas separation
    unsteady-state operation
    process intensification
    separation
    efficiency
    membrane module
    separacja gazów membranowych
    operacja niestabilna
    intensyfikacja procesu
    separacja
    wydajność
    moduł membranowy
    Opis:
    The paper presents the experimentalstudy of a novel unsteady-statemembrane gas separation approachfor recovery of a slow-permeant component in the membrane module with periodical retentate with-drawals. The case study consisted in the separation of binary test mixtures based on the fast-permeantmain component (N2O, C2H2) and the slow-permeant impurity (1% vol. of N2)using a radial counter-current membrane module. The novel semi-batch withdrawal technique was shown to intensify theseparation process and provide up to 40% increase in separation efficiency compared to a steady-stateoperation of the same productivity.
    Źródło:
    Chemical and Process Engineering; 2019, 40, 1; 57--65
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical interpretation of a mathematical model of membrane gas separation with energy transfer by gas flowing in a channel to gas penetrating this channel from the adjacent channel
    Autorzy:
    Szwast, M.
    Szwast, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/185839.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gas separation
    membrane
    mathematical model
    separacja gazów
    membrana
    model matematyczny
    Opis:
    Comparative calculations with a mathematical model designed by the authors, which takes into consideration energy transfer from gas flowing through a given channel to gas which penetrates this channel from an adjacent channel, as well as a model which omits this phenomenon, respectively, were made for the process of separating gas mixtures carried out with an inert sweep gas in the fourend capillary membrane module. Calculations were made for the process of biogas separation using a PMSP polymer membrane, relative to helium as the sweep gas. It was demonstrated that omitting the energy transfer in the mathematical model might lead to obtaining results which indicate that the capacity of the process expressed by the value of feed flux subjected to separation is by several percent higher than in reality.
    Źródło:
    Chemical and Process Engineering; 2018, 39, 2; 209--222
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduction of carbon footprint from spark ignition power facilities by the dual approach
    Autorzy:
    Janusz-Szymańska, Katarzyna
    Grzywnowicz, Krzysztof
    Wiciak, Grzegorz
    Remiorz, Leszek
    Powiązania:
    https://bibliotekanauki.pl/articles/1845486.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spark ignition engines
    digestion
    gas
    cofiring
    CO2 emissions
    membrane
    separation
    Opis:
    Power generation units, suitable for individual users and small scale applications, are mainly based on spark ignition engines. In recently performed research, reductions of emissions coming from such units, especially considering carbon dioxide emissions, are deemed as the issue of particular importance. One of solutions, postponed to reduce impact of spark ignition engine-based units on the natural environment, is transition from fossil fuels into renewable gaseous fuels, as products of organic digestion. Nonetheless, development of new solutions is required to prevent further carbon dioxide emissions. The paper presents a novel dual approach developed to reduce carbon dioxide emissions from stationary power units, basing on spark ignition engine. The discussed approach includes both reduction in carbon content in the fuel, which is realized by its enrichment with hydrogen produced using the solar energy-supported electrolysis process, as well as application of post-combustion carbon dioxide separation. Results of the performed analysis suggest profitability of transition from fossil into the hydrogen-enriched fuel mixture, with significant rise in operational parameters of the system following increase in the hydrogen content. Nevertheless, utilization of the carbon dioxide separation leads to vital soar in internal energy demand, causing vital loss in operational and economical parameters of the analyzed system.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 2; 171-192
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of the absorbing pervaporation technique for ammonia recovery after the haber process
    Autorzy:
    Atlaskin, A.
    Petukhov, A. N.
    Yanbikov, N. R.
    Salnikova, M.E.
    Sergeeva, M. S.
    Vorotyntsev, V. M.
    Vorotyntsev, I. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/184857.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gas separation
    absorbing pervaporation
    ammonia
    process intensification
    membrane
    separacja gazów
    amoniak
    intensyfikacja procesu
    membrana
    Opis:
    A novel absorbing pervaporation hybrid technique has been evaluated experimentally for the recovery of ammonia from the gas mixture in a recycle loop of synthesis plants. This process of hybridization brings together the combination of energy-efficient membrane gas separation based on poly(dimethylsiloxane) poly(diphenylsilsesquioxane) with a high selective sorption technique where a water solution with polyethylene glycol 400 (PEG-400) was used as the liquid absorbent. Process efficiency was studied using the pure and mixed gases. The influence of PEG-400 content in aqueous solutions on process selectivity and separation efficiency was studied. The ammonia recovery efficiency evaluation of an absorbing pervaporation technique was performed and compared with the conventional membrane gas separation. It was shown that the absorbing pervaporation technique outperforms the conventional membrane method in the whole range of productivity, producing the ammonia with a purity of 99.93 vol.% using the PEG 80 wt.% solution. The proposed method may be considered as an attractive solution in the optimization of the Haber process.
    Źródło:
    Chemical and Process Engineering; 2018, 39, 3; 323--333
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the efficiency of the unit based on circulating fluidized bed boiler integrated with three-end high-temperature membrane for air separation
    Analiza efektywności układu kotła cyrkulacyjnego typu oxy z membraną wysokotemperaturową typu three-end do separacji powietrza
    Autorzy:
    Kotowicz, J.
    Balicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/172915.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kocioł fluidalny
    membrana typu three-end
    separacja powietrza
    fluidized boiler
    three-end membrane
    air separation
    Opis:
    W artykule analizie poddano kocioł z cyrkulacyjnym złożem fluidalnym. Do spalania węgla brunatnego w kotle użyto tlenu wytworzonego w wysokotemperaturowej membranie typu three-end. Pokazano sposób określenia powierzchni membran oraz energochłonności procesu membranowej separacji powietrza. Sprawność termiczną kotła, energochłonność membranowej separacji powietrza i powierzchnię modułu membranowego wyznaczono w funkcji odzysku tlenu w membranie. Zaproponowano wykorzystanie azotu z instalacji separacji powietrza do suszenia węgla. Dla takiego wariantu również wyznaczono charakterystyki układu. Stwierdzono, że przy wykorzystaniu azotu do suszenia sprawności termicznej kotła rośnie z 76% do 87%, przy wzroście stopnia odzysku tlenu od 0,45 do 0,9, i jest wyższa odpowiednio od 12% do 6% w porównaniu do układu bez suszenia. W zaproponowanym układzie separacji powietrza powierzchnia modułu membranowego zawiera się w przedziale 76,5-95,0 tys. m².
    In this paper boiler with circulating fluidized bed was analyzed. For the combustion of lignite in the boiler oxygen produced in the three-end high-temperature membrane was used. Paper shows a method of determining the surface of the membranes and energy consumption of the air separation process. Boiler thermal efficiency, energy consumption of the process and air separation membrane module surface was determined as a function of oxygen recovery in the membrane. Nitrogen from the air separation unit was proposed to be used for drying lignite. For this variant characteristics of the system were determined. It was found that the thermal efficiency of the boiler in case where nitrogen was used for lignite drying increased from 76% to 87% with increasing value of oxygen recovery ratio from 0.45 to 0.9 and is higher, respectively, from 12% to 6% in comparison to the system without drying. In the proposed air separation unit required membrane surface is in the range 76500-95000 m².
    Źródło:
    Archiwum Energetyki; 2012, 42, 2; 59-71
    0066-684X
    Pojawia się w:
    Archiwum Energetyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Carbon dioxide separation technologies
    Technologie separacji dwutlenku węgla
    Autorzy:
    Czarnota, Robert
    Knapik, Ewa
    Wojnarowski, Paweł
    Janiga, Damian
    Stopa, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/219359.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wychwyt CO2
    technologia membran
    absorpcja
    separacja kriogeniczna
    CO2 capture
    membrane technology
    absorption
    cryogenic separation
    Opis:
    CO2 emission from combustion fossil fuels is considered as the primary factor in the global warming. Different methods for separation CO2 from combustion flue gases are extensively used across the world. The aim of this study is to analyze the most important technological solutions of CO2 separation. For this reason chemical absorption, physical absorption, adsorption approach, membrane filtration and cryogenic process were researched. Concluding, selection of the right method for carbon dioxide capture separation is a complex issue and a range of technological and economic factors should be taken into consideration prior to application on the industrial scale.
    Emisja CO2 do atmosfery pochodząca ze spalania paliw kopalnych jest uważana za główny czynnik globalnego ocieplenia. Różne metody oddzielania CO2 od gazów spalinowych są szeroko stosowane na ca-łym świecie. Celem niniejszego artykułu jest analiza najważniejszych technologicznych rozwiązań separacji CO2. W tym celu przeanalizowano następujące metody: absorpcja chemiczna, absorpcja fizyczna, adsorpcja, filtracja membranowa i proces kriogeniczny. Podsumowując, wybór właściwej metody separacji dwutlenku węgla pod kątem wychwytu dwutlenku węgla jest złożonym zagadnieniem, a przed zastosowaniem na skalę przemysłową należy wziąć pod uwagę szereg czynników, w tym technologiczne i ekonomiczne.
    Źródło:
    Archives of Mining Sciences; 2019, 64, 3; 487-498
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of technical and economic parameters of an ionic transport membrane air separation unit working in a supercritical power plant
    Autorzy:
    Kotowicz, J.
    Michalski, S.
    Balicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/185699.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    four-end type ionic transport membrane module
    air separation
    supercritical power plant
    separacja powietrza
    elektrownia nadkrytyczna
    Opis:
    In this paper an air separation unit was analyzed. The unit consisted of: an ionic transport membrane contained in a four-end type module, an air compressor, an expander fed by gas that remains after oxygen separation and heat exchangers which heat the air and recirculated flue gas to the membrane operating temperature (850 °C). The air separation unit works in a power plant with electrical power equal to 600 MW. This power plant additionally consists of: an oxy-type pulverized-fuel boiler, a steam turbine unit and a carbon dioxide capture unit. Life steam parameters are 30 MPa/650 °C and reheated steam parameters are 6 MPa/670 °C. The listed units were analyzed. For constant electrical power of the power plant technical parameters of the air separation unit for two oxygen recovery rate (65% and 95%) were determined. One of such parameters is ionic membrane surface area. In this paper the formulated equation is presented. The remaining technical parameters of the air separation unit are, among others: heat exchange surface area, power of the air compressor, power of the expander and auxiliary power. Using the listed quantities, the economic parameters, such as costs of air separation unit and of individual components were determined. These quantities allowed to determine investment costs of construction of the air separation unit. In addition, they were compared with investment costs for the entire oxy-type power plant.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 3; 359-371
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermodynamic evaluation of supercritical oxy-type power plant with high-temperature three-end membrane for air separation
    Autorzy:
    Kotowicz, J.
    Balicki, A.
    Michalski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/240116.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oxy-combustion
    membrane technology
    air separation unit
    thermodynamic evaluation
    oxy-spalanie
    technologie membranowe
    separator powietrza
    ocena termodynamiczna
    Opis:
    Among the technologies which allow to reduce greenhouse gas emissions, mainly of carbon dioxide, special attention deserves the idea of 'zero-emission' technology based on boilers working in oxy-combustion technology. In the paper a thermodynamic analysis of supercritical power plant fed by lignite was made. Power plant consists of: 600 MW steam power unit with live steam parameters of 650°C/30 MPa and reheated steam parameters of 670°C/6 MPa; circulating fluidized bed boiler working in oxy-combustion technology; air separation unit and installation of the carbon dioxide compression. Air separation unit is based on high temperature membrane working in three-end technology. Models of steam cycle, circulation fluidized bed boiler, air separation unit and carbon capture installation were made using commercial software. After integration of these models the net electricity generation efficiency as a function of the degree of oxygen recovery in high temperature membrane was analyzed.
    Źródło:
    Archives of Thermodynamics; 2014, 35, 3; 105-116
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Designing of membrane contactors with cross-counter current flow
    Autorzy:
    Kołtuniewicz, A.B.
    Modelski, S.
    Witek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/952681.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    membrane contactor
    sorption process
    integrated processes of separation
    designing
    surface renewal theory
    stycznik membranowy
    proces sorpcji
    zintegrowany proces separacji
    projektowanie
    teoria odnowienie powierzchni
    Opis:
    The knowledge about membrane contactors is growing rapidly but is still insufficient for a reliable designing. This paper presents a new type of membrane contactors that are integrated with one of the following ways of separation by using absorbents, micelles, flocculants, functionalized polymers, molecular imprints, or other methods that are based on aggregation. The article discusses methods for designing multi-stage cascade, usually counter-current. At every stage of this cascade, relevant aggregates are retained by the membrane, while the permeate passes freely through membrane. The process takes place in the membrane boundary layer with a local cross-flow of the permeate and the retentate. So the whole system can be called a cross-counter-current. The process kinetics “k” must be coordinated with the permeate flux “J” and the rate of surface renewal of the sorbent on the membrane surface, s. This can be done by using ordinary back-flushing or relevant hydrodynamic method of sweeping, such as: turbulences, shear stresses or lifting forces. A surface renewal model has been applied to adjust the optimal process conditions to sorbent kinetics. The experimental results confirmed the correctness of the model and its suitability for design of the new type of contactors.
    Źródło:
    Chemical and Process Engineering; 2012, 33, 4; 573-583
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies