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Zawartość wybranych pierwiastków w węglu brunatnym z kopalni Sieniawa i popiołach pozostałych po procesie zgazowania

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EN
The content of chosen chemical elements in raw brown coal from Sieniawa Coal Mine and gasification ashes
Języki publikacji
PL
Abstrakty
PL
W pracy przedstawiono wyniki analiz zawartości pierwiastków w surowym węglu brunatnym pochodzącym z kopalni Sieniawa oraz popiołach pozostałych po procesie zgazowania tego węgla, prowadzonego z lekkim niedoborem O2, w temperaturze 1100 °C i ciśnieniu w zakresie 4 - 7 Ba, w modułowym reaktorze w Laboratorium Zgazowania Węgla IGO-Poltegor we Wrocławiu. Zawartość metali (Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn) oznaczono przy pomocy urządzenia FAAS 3100 firmy Perkin Elmer po wykonaniu dwuetapowej mineralizacji mikrofalowej prób w piecu Speedwave MSW-2, a stężenie Hg spektrometrem absorpcji atomowej AMA 254. Spośród analizowanych pierwiastków w surowym węglu brunatnym najwięcej było żelaza (97340,89 ppm), a najmniej rtęci (0,0569 ppm). Zawartość pozostałych pierwiastków w węglu kształtowała się w zakresie 4,91 ppm (Cr) - 55,87 ppm (Zn). Zawartość metali w popiołach pozostałych po procesie zgazowania węgla była od kilku do kilkunastu razy większa niż w węglu brunatnym. Największą zawartość odnotowano dla żelaza (78705,65 ppm), a najmniejszą dla rtęci (0,00672 ppm). Zawartość pozostałych pierwiastków w popiołach kształtowała się w zakresie 5,50 ppm (Cd) - 716,38 ppm (Mn). Znacznie niższa zawartość rtęci (Hg) w popiele po zgazowaniu węgla, w porównaniu do jej zawartości w surowym węglu brunatnym, świadczy o łatwym przechodzeniu tego pierwiastka z fazy stałej do gazowej.
EN
Content of chemical elements in raw brown coal from Sieniawa Coal Mine and ashes formed during gasification of that coal was analyzed and the results are presented in the paper. Gasification was conducted with a slight depletion of O2 at temperature of 1100 °C and pressure ranging from 4 to 7 Ba in a module reactor in the Coal Gasification Laboratory at Poltegor-Institute, Wroclaw. Metal content (Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn) was determined with the use of FAAS 3100 equipment by Perkin Elmer after completion of two-stage microwave mineralization of samples in the Speedwave MSW-2 furnace. Atomic absorption spectrometer AMA 254 was used for determination of Hg content. Among analyzed elements in raw brown coal the highest amount was noted for iron (97340,89 ppm), and the lowest for mercury (0,0569 ppm). The content of remaining elements in coal ranged from 4,91 ppm (Cr) to 55,87 ppm (Zn). Metal content in ashes formed in the coal gasification process was from a few to over a dozen times higher than in brown coal. The highest content was noted for iron (78705,65 ppm) and the lowest for mercury (0,00672 ppm). The amount of remaining elements ranged from 5,50 ppm (Cd) to 716,38 ppm (Mn). Significantly lower content of mercury (Hg) in gasification ash, compared to its content in raw brown coal, proves easy transformation of this element from solid to gas.
Rocznik
Strony
81--87
Opis fizyczny
Bibliogr. 45 poz.
Twórcy
autor
autor
autor
  • Poltegor-Instytut IGO, Wrocław
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL1-0014-0019
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