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Wyszukujesz frazę "sulfur removal" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Removal of sulfur and phosphorous from iron ore concentrate by leaching
Autorzy:
Rezvani Pour, H.
Mostafavi, A.
Shams Pur, T.
Ebadi Pour, G.
Haji Zadeh Omran, A.
Powiązania:
https://bibliotekanauki.pl/articles/110072.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
sulfur removal
chemical leaching
iron ore concentrate
Opis:
Iron ore having high-sulfur content causes problems in the concentrate production, pelletizing, and steel-making processes and environmental issues such as sulfur dioxide emission during the concentrate pelletizing process, and effect on steel quality. The current study was focused on the removal of sulfur from iron ore concentrate using chemical leaching technique. Magnetite iron ore concentrate was chosen for this purpose. The results obtained from the study showed that more than 90% of the total sulfur content was removed from the iron ore concentrate by the chemical leaching. Effects of several parameters, including temperature, stirring speed, particle size, and use of organic solvent on the sulfur removal was investigated by a series of experimental conditions. After optimizing the experimental conditions, it was demonstrated that in addition to sulfur, more than 80% of phosphorus, another important impurity, was also removed from the iron ore concentrate. In addition, one of the major advantages of our proposed method was the transformation of mineral pyrites to useful byproducts such as elemental sulfur.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 2; 845-854
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
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:
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:
Reuse of alum sludge for reducing flocculant addition in water treatment plants
Autorzy:
Scalize, Paulo S.
Souza, Leonora M. D.
Albuquerque, Antonio
Powiązania:
https://bibliotekanauki.pl/articles/207340.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
aluminum sulfate
chemicals removal
water treatment
coagulation
flocculation
potable water
sulfur compounds
siarczan glinu
usuwanie chemikaliów
uzdatnianie wody
koagulacja
flokulacja
woda pitna
związki siarki
Opis:
The recycling of water treatment residues (WTR) inside drinking water treatment plants (DWTP) to be a good option for reusing this type of waste, as well as for reducing the costs with its disposal off and with the acquisition of treatment chemicals. Therefore, a WTR was reused for auxiliary of the coagulation-flocculation processes for reducing the use of aluminium sulfate (coagulant) in a DWTP. Three series of experiments have been conducted involving three water samples with different turbidity and colour, different WTR samples with different total suspended solids (TSS) concentrations and different aluminium sulfate concentrations. The results showed that WTR can efficiently be used for the removal of turbidity between 21 NTU and 218 NTU and colour between 194 HU and 1509 HU for TSS concentration between 1635 mg/dm3 and 5420 mg/dm3, with better results in the range between 1635 mg/dm3 and 2678 mg/dm3. For higher TSS concentrations, the removal of both parameters decrease because there are excess of organics released to water, which demands the use of more coagulant.
Źródło:
Environment Protection Engineering; 2019, 45, 1; 57-70
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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