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    Wyświetlanie 1-11 z 11
    Tytuł:
    Use of natural soda ash production process waste for SO2 removal
    Autorzy:
    Tunali, Y. I.
    Ertunç, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/207588.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    removal SO2
    desulfurization fule gas
    lignite
    Chem Cad 60
    usuwanie SO2
    odsiarczanie spalin
    węgiel brunatny
    Opis:
    Results of ChemCad©6.0 simulation have been presented on usability of natural soda ash production process waste in order to remove SO2 from flue gas. Properties and concentrations of the solutions used in this study belong to the waste stream of Eti Soda Inc., and the flue gas compositions were acquired from an existing thermal power plant. SO2 and H2O feed rates and flue gas entrance temperature to the absorption tower were optimized through the response surface methodology (RSM) in order to attain highest SO2 removal yields. It has been found that SO2 removal remained at 33.83% when the waste composition was lower than 2 wt. % while 100% SO2 removal was reached as the waste composition was increased to 8 wt. %. This result clearly demonstrates that treatment of natural soda ash production process waste can be done safely and economically while serving as an SO2 removal agent at the same time.
    Źródło:
    Environment Protection Engineering; 2017, 43, 2; 69-80
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on seawater scrubbing for SO2 removal from ships power plant exhaust gas
    Autorzy:
    Ma, Yiping
    Xu, Leping
    Su, Penghao
    Feng, Daolun
    Yang, Kailiang
    Powiązania:
    https://bibliotekanauki.pl/articles/207540.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    sulfur dioxide
    absorption
    seawater
    dwutlenek siarki
    adsorpcja
    woda morska
    Opis:
    The mechanism of SO2 absorption in seawater is investigated, and the experiment was carried out accordingly. Emphasis is on applications of seawater scrubbing of ship’s power plant exhaust gas containing SO2. The formulated model is used to predict the influence of various parameters on both pH of tailwater and seawater desulfurization capability, e.g., the partial pressure of SO2, the partial pressure of CO2, tailwater temperature, pH and alkalinity of seawater. Experiment results indicated that the seawater desulfurization capacity increases with both increasing partial pressure of SO2, pH and alkalinity and decreasing partial pressure of CO2 and temperature. The study shows the desulfurization capacity of seawater with 3.5% salinity is approximately twice that of freshwater. Different scenarios in which the required absorbent supply rate for a given SO2 removal efficiency are studied. It is observed a 97% removal efficiency, corresponding to meeting the SOx limits in the SOx emission control areas (SECA) while operating on a heavy fuel oil containing sulfur 3.5 wt. %, requires a minimum water supply rate of 0.0407–0.0683 m3/kWh, depending mainly on the water composition in terms of alkalinity and salinity. Such data are important in assessing the operation cost of the water scrubbing system.
    Źródło:
    Environment Protection Engineering; 2020, 46, 1; 31-47
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Enhancing SO2 removal efficiency by lime modified with sewage sludge in a novel integrated desulfurization process
    Autorzy:
    Qin, L.
    Han, J.
    Chen, W.
    Liu, Z.
    He, M.
    Xing, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/950037.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    sewage sludge
    steel industry
    sintering process
    osad ściekowy
    przemysł hutniczy
    proces spiekania
    Opis:
    In China, the sintering process annually emitted around 1.5 million t SO2, representing 70% of SO2 produced from the iron and steel industry. Lime based sorbent was modified with municipal sewage sludge (MSS) and the influence of the modification on the desulfurization efficiency was investigated in a laboratory-scale novel integrated desulfurization (NID) reactor. The properties of modified sorbent were characterized by the Brunauer–Emmett–Teller (BET) analyzer and X-ray fluorescence (XRD) analyzer. BET surface area was increased from 17.48 to 46.68 m2g–1. when the MSS/lime ratio increased from 0 to 0.08. Ca4Al8Si8O32, Ca1.5SiO3.5, Na2Si2O5 and CaSiO3 found in the modified lime benefited for the increase of the BET surface area and pore volume. The effects of sewage sludge/CaO weight ratio, calcination temperature and hydration time on the desulfurization efficiency were also studied. SO2 removal efficiency was increased from 88.7% to 97.3% after using the lime modified with sewage sludge.
    Źródło:
    Environment Protection Engineering; 2017, 43, 4; 17-27
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of recycled natural aluminasilicate doped with vanadium for the decontamination of the air
    Autorzy:
    Marcewicz-Kuba, A.
    Olszewska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/779849.pdf
    Data publikacji:
    2007
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    katalizatory DESONOX
    usuwanie SO2
    montmorylonit
    wanad
    DESONOX catalysts
    SO2 removal
    montmorillonite
    vanadium
    Opis:
    This paper reports studies on the influence of vanadium concentration on the catalytic activity of DESONOX catalysts (in DESOX reaction) based on modified montmorillonite from Jelsovy Potok. The investigation of the influence on the physicochemical properties of the catalysts on their behaviour has also been studied.
    Źródło:
    Polish Journal of Chemical Technology; 2007, 9, 2; 65-67
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A review on electron beam flue gas treatment (EBFGT) as a multicomponent air pollution control technology
    Autorzy:
    Basfar, A. A.
    Fageeha, O. I.
    Kunnummal, N.
    Chmielewski, A. G.
    Licki, J.
    Pawelec, A.
    Zimek, Z.
    Warych, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/148616.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    fossil fuel combustion
    heavy fuel oil
    electron beam irradiation
    plasma processes
    flue gas treatment
    SO2 removal
    NOx removal
    Źródło:
    Nukleonika; 2010, 55, 3; 271-277
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simultaneous removal of NOx, SO2, CO and Hg from flue gas by ozonation. Pilot plant studies
    Autorzy:
    Głomba, M.
    Kordylewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/950039.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    carbon dioxide
    flue gases
    ozone
    ozonization
    pilot plants
    sulfur dioxide
    gas absorption
    NOx removal
    So2 removal
    CO removal
    dwutlenek węgla
    tlenki azotu
    spaliny
    ozon
    ozonowanie
    instalacje pilotażowe
    dwutlenek siarki
    absorpcja gazu
    usuwanie NOx
    usuwanie SO2
    usuwanie CO
    Opis:
    The results of pilot plant investigations of simultaneous removal of NOx, SO2 and Hg from flue gas with ozone as the oxidizing agent and the spray tower absorber with NaOH solution as the absorbent have been presented. Flue gas was delivered into the pilot plant at the flow rate of 200 m3/h from the coal fired OP-430 boiler. The effectiveness of NOx removal was over 95% when the molar ratio O3/NO reached 2.0. Sulfur dioxide was practically completely washed out from flue gas in the absorber at the liquid-to-gas ratio 7.5 dm3/m3. The effectiveness of Hg removal in the studied system was approximately 80%. It was pointed out that CO concentration in flue gas could considerably increase the ozone consumption. The effect of carbon dioxide in flue gas on the chemistry of absorption due to hydroxides conversion into carbonates and bicarbonates was noticed.
    Źródło:
    Environment Protection Engineering; 2014, 40, 3; 113-125
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron beam flue gas treatment process for purification of exhaust gases with high SO2 concentrations
    Autorzy:
    Chmielewski, A. G.
    Licki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/146442.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    high sulphur fossil fuel
    flue gas
    electron accelerator
    SO2 and NOx removal efficiency
    absorbed dose
    by-product
    Opis:
    Exhaust gases with high SO2 concentrations are emitted from combustion of high sulphur fossil fuels and from different industrial processes (e.g. copper smelter and sintering plants). The application of the electron beam process for SO2 and NOx removal from such flue gases was investigated. A parametric study was carried out to determine the SO2 and NOx removal efficiency as a function of temperature and humidity of irradiated gases, absorbed dose and ammonia stoichiometry. The efficiency 90–95% of SO2 removal was obtained in the optimal treatment conditions with an inlet SO2 concentration of up to 15% vol. The synergistic effect of high SO2 content on NOx removal was indicated. The collected by-product was a mixture of ammonium sulphate and nitrate. The content of heavy metals in the by- -products was many times lower than the values accepted for commercial fertilizers.
    Źródło:
    Nukleonika; 2008, 53, suppl. 2; 61-66
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of SO2 from gases on carbon materials
    Autorzy:
    Narkiewicz, U.
    Pietrasz, A.
    Pełech, I.
    Arabczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/778340.pdf
    Data publikacji:
    2012
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    usuwanie dwutlenku siarki
    nanowęgle
    sulphur dioxide removal
    nanocarbon materials
    Opis:
    The aim of the work is to describe a capability of the active carbon CARBON L-2-4 (AC) and of the nanocarbon (NC) materials containing iron nanoparticles to continuously remove SO2 from air. The carbon nanomaterials (NC) containing iron nanoparticles were synthesised using a chemical vapor deposition method - through catalytic decomposition of ethylene on nanocrystalline iron. The process of SO2 removal was carried out on dry and wet with water carbon catalyst (AC or NC) and was studied for inlet SO2 concentration 0.3 vol.% in the presence of O2, N2 and H2O, in the temperature range of 40-80°C.
    Źródło:
    Polish Journal of Chemical Technology; 2012, 14, 1; 41-45
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on products of simultaneous removal of SO2 and NOx from flue gas by ozonation and alkaline absorption
    Autorzy:
    Głomba, M.
    Hałat, A.
    Kordylewski, W.
    Łuszkiewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/206900.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    soda kaustyczna
    instalacja kogeneracyjna
    spaliny
    związki azotu
    ozonowanie
    instalacje pilotażowe
    dwutlenek siarki
    caustic soda
    cogeneration plants
    exhaust gases
    flue gases
    nitrogen compounds
    ozonization
    pilot plants
    sulfur dioxide
    Opis:
    The results of laboratory scale research have been presented on the effects of ozonation of carrier gas containing NOx and SO2 on by-products trapped in Dreschel washers with solution of sodium hydroxide. The controlling parameter in this process was the ozonation intensity determined by the molar ratio O3/NOx. The measured by-products in a scrubber were SO32- , SO42- , NO2- and NO3- ions. It has been shown that ozonation of flue gas favours oidation of nitrites to nitrates and sulfites to sulfates in alkaline solution. Some of these results were confirmed in a pilot scale studies. Pilot plant was located in Wroclaw CHP (Combined Heat and Power), which provided flue gas for testing at a rate of 200 m3/h from the OP-430 boiler. Exhaust gases were ozonized and captured simultaneously with SO2. Sodium hydroxide was used in a pilot scale as an absorbent.
    Źródło:
    Environment Protection Engineering; 2016, 42, 2; 125-136
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simultaneous removal of SO2 and NOx from sintering flue gas using ammonia-Fe(II)EDTA combined with electrolytic regeneration
    Autorzy:
    Liang, Y.
    Yao, X.
    Quin, L.
    Chen, W.
    Han, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/208117.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ammonia
    desulfurization
    flue gases
    nitrogen oxides
    nitrogen removal
    sintering sulfur dioxide
    amoniak
    odsiarczanie
    gazy odlotowe
    tlenki azotu
    usuwanie azotu
    spiekanie
    ditlenek siarki
    Opis:
    Sulfur dioxide and nitrogen oxide are health hazardous gases, which contribute to the formation of submicron acidic particulates. To reduce SO2 and NOx emission from the sintering flue gas, the combination of ammonia-Fe(II)EDTA solution scrubbing with Fe(III) electrolytic regeneration is proposed. The above method has the following advantages: direct conversion of NOx and SO2 to harmless N2 and SO4 2−, recovery of the by-product (NH4)2SO4), simultaneous removal of NOx and SO2 emission from flue gas in the reactor. The effect of the pH, initial Fe(II)EDTA concentration, and voltage on the desulfurization and denitration efficiencies was investigated using a bench-scale reactor. The maximal desulfurization and denitration efficiencies were 98% and 52%, respectively. The optimum parameters were pH ˃ 5.0, 2.1 V, and 0.05 mol·dm–3 Fe(II)EDTA concentration. SO2 and NOx removal from the sintering flue gas by ammonia-Fe(II)EDTA solution scrubbing combined with electrolytic regeneration was also demonstrated in a pilot-scale reactor.
    Źródło:
    Environment Protection Engineering; 2018, 44, 2; 19-36
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Abatement of particulate matter and SO2 emission by ships
    Autorzy:
    Jaworek, A.
    Krupa, A.
    Marchewicz, A.
    Sobczyk, A.
    Czech, T.
    Ottawa, A.
    Śliwiński, Ł.
    Antes, T.
    Kurz, M.
    Szudyga, M.
    Charchalis, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/245025.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    marine transport
    diesel exhausts
    air pollution control
    environment protection
    PM removal
    Opis:
    Ship engines emit noxious gases (SO2, NOx, and VOC) and particulate matter (PM), mostly black carbon. Since 1990, the International Maritime Organization (IMO) regulations gradually restricted the level of emission of NOx, which since 2016 have to be lower than 2-3.4 g/kWh, depending on engine power. SO2 emission reduction has begun since 2010 and now the content of sulphur in marine fuels is limited to 3.5%. At the same time, the Sulphur Emission Control Areas (SECA) has been established, at which the sulphur content in fuel cannot be higher than 0.1%. Since 2020, only a fuel of 0.5% sulphur can be used at all cruising areas outside SECA. It should be noted that due to lack of efficient technology, IMO still has not issued regulations regarding the PM emission by ships. The paper discusses various electrostatic techniques used for the reduction of PM emission in Diesel engine exhausts. Electrostatic scrubber systems, using seawater, allow removal of PM from exhausts with high efficiency and simultaneously SO2 gas. Electrostatic agglomerators allow increasing submicron and nanoparticles by coagulation of those particles to the larger ones, which could be removed by conventional techniques.
    Źródło:
    Journal of KONES; 2016, 23, 4; 183-192
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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