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    Wyświetlanie 1-7 z 7
    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:
    A new design of wet scrubber for removal of fine particles from exhaust gas
    Autorzy:
    Liao, B.
    Juang, S. H.
    Lin, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/208160.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    cleaning methods
    filter surface
    solid particles
    Venturi scrubber
    combustion gases
    płuczka Venturiego
    cząstki stałe
    metody oczyszczania
    gazy spalinowe
    Opis:
    Bag-house dust collectors are commonly used in the industry for removing solid particles from dust laden gas. Bag house filter media need to be periodically cleaned in order to remove accumulated particles from the filter surface. Pulse jet cleaning is the most common cleaning method but produces noise increment of about 30-40 dB, which is its major disadvantage. The present study reports on a new type of combined wet scrubber-Venturi scrubber in the shape of a cyclone. The proposed design eliminates the noise associated with the pulse jet filter-cleaning process and filter bag replacement costs. The experimental results were demonstrated with high efficiency in the design.
    Źródło:
    Environment Protection Engineering; 2016, 42, 1; 59-70
    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:
    Concentrations of carbon monoxide and nitrogen oxides from a 15 kW heating boiler supplied periodically with a mixture of sunflower husk and wood pellets
    Autorzy:
    Juszczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207042.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    pelletizing
    carbon monoxide
    combustion chambers
    flue gases
    nitrogen oxides
    pollutant concentration
    heating boiler
    granulowanie
    tlenek węgla
    komory spalania
    gazy spalinowe
    tlenki azotu
    stężenie zanieczyszczeń
    kocioł grzewczy
    Opis:
    The impact of periodic feeding mode on the concentrations of carbon monoxide (CO) and nitrogen oxides (NO, NOx) in the flue gas downstream the boiler was analyzed during firing of a mixture of sunflower husk and wood pellets in an overfeed furnace. The mixtures containing 100, 70 and 50 wt. %, of sunflower husk pellets were supplied to the boiler in two feeding modes: 1 s of operation 4 s of stand-by and 1s of operation 6 s of stand-by. Correlation between pollutant concentrations and the temperature in the combustion chamber was evaluated. The following concentrations of CO for various feeding modes and sunflower husk pellet proportions have been obtained: 1:6,100% - 6150 mg/m3,1:6,70% - 3360 mg/m3, 1:6, 50% - 2600 mg/m3, 1:4,100% - 4580 mg/m3,1:4, 70% - 2570 mg/m3, 1:4,50% - 870 mg/m3 for 10% O2 content in the flue gas. The study indicates the advisability of reducing the stand-by period in the pellet feeding system.
    Źródło:
    Environment Protection Engineering; 2014, 40, 2; 65-74
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomass as an answer to sustainable energy. Opportunity versus challenge
    Autorzy:
    Cao, Y.
    Pawłowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/207977.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    biomass
    energy conservation
    fossil fuels
    greenhouse gases
    renewable energy resources
    bio-mass energy
    energy from biomass
    renewable energies
    sustainable energy
    biomasa
    oszczędność energii
    paliwa kopalne
    gazy cieplarniane
    odnawialne źródła energii
    energia biomasy
    energia z biomasy
    energetyka zrównoważona
    Opis:
    Current world economic development is heavily dependent on fossil fuels that are nonrenewable and are main emitter of the greenhouse gases, leading to resources to be exhausted on one side, and the earth being warmer on the other. This in turn creates a shrinking bottleneck to economic development and wealth generation. Therefore, in pursuit of a sustainable future, a shift from fossil fuels to renewable energy should be taken essentially. Biomass is an indispensable element for development of sustainable energy because it is the only renewable energy source that can be used to produce liquid fuel. In the paper, the sustainability of energy from biomass has been discussed, with the focus on an identification of its benefits and challenges. The necessity of deployment of biomass energy and its progress in China and Poland have also been described.
    Źródło:
    Environment Protection Engineering; 2013, 39, 1; 153-161
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of emission and reduction of greenhouse gases from upstream petrochemical industry in Thailand
    Autorzy:
    Kanchanapiya, P.
    Julapun, N.
    Limphitakphong, N.
    Pharino, C.
    Chavanparit, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/207793.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    greenhouse gases
    aromatic compounds
    energy conservation
    energy utilization
    fuel economy
    fuels
    olefins
    petrochemical plant
    petrochemicals
    petrochemical industry
    production process
    gazy cieplarniane
    związki aromatyczne
    oszczędzanie energii
    wykorzystanie energii
    zużycie paliwa
    paliwa
    olefiny
    zakłady petrochemiczne
    petrochemia
    przemysł petrochemiczny
    proces produkcji
    Opis:
    The study aimed to determine the baseline and indicators for the emission of greenhouse gases (GHG) and to evaluate the effectiveness of GHG mitigation measures in Thai upstream petrochemical plants. During 2005–2010, the upstream production had an annual demand for energy in the range of 110 000–150 000 TJ, ca. 5–6% of the total Thailand energy consumption. The proportion of energy consumption for producing olefin and aromatic products is 73 and 14%, respectively. The amount of GHG emissions equalled approximately 7–9 Mt CO2 eq. This represents a 3% portion of the total GHG emissions of Thailand, separating into the olefin and aromatic products, around 69 and 18%, respectively. The ratios of GHG emission came from fuel combustion of 59%, steam consumption (28%), electricity consumption (10%) and flare (3%). The carbon intensity of upstream products in the olefins and aromatics’ groups had the range of 1.125–1.309 and 0.518–0.667 t CO2 eq/t, respectively. It was likely that the carbon intensity during the period of 2005–2010 was lowered as the industry sector took measures to improve energy conservation and developed their production processes. The GHG mitigation measures by energy conservation were already implemented including fuel saving (67%), steam saving (23%) and electricity saving (10%).
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 31-46
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    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
      Wyświetlanie 1-7 z 7

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