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Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Mercury Removal from Waste Incineration Flue Gas: Heterogeneous Oxidation and Capture by Waste-Derived Fly Ashes.
 Rumayor, Marta ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Švehla, Jaroslav
During waste incineration, all Hg-content is released primarily as elemental mercury (Hg0) which passes into the flue gas and is gradually oxidized. Mainly HgCl2 is formed, by both homogeneous and heterogeneous reactions. Some degree of Hg removal is achieved by existing conventional air pollution control devices (APCDs), normally used to control NOx, SO2, and dust emissions. In this study, three samples of fly ashes from boiler and ESP (characterized by composition, surface area and carbon content) derived from MSW incineration were assessed for mercury removal under MSW incineration conditions in a laboratory scale, using a fixed-bed reactor packed with fly ash. The results obtained showed that unburnt carbon content, composition of flue gas (e.g. mainly HCl and SO2 content) and operating temperature are important variables controlling capture of mercury by fly ash.
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Mercury Behaviour in Waste Incineration Facilities: Gaseous Transformations and Retention by Carbon and Mineral-Based Sorbents.
 Rumayor, Marta ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Švehla, Jaroslav
This study discusses the effect of temperature and gas components, present in typical flue gas from MSW incineration, on both mercury oxidation and capture by mineral and carbon-based sorbents. The study was carried out by means of a laboratory scale device that simulates the gaseous mercury behaviour in flue gas at temperatures ranged between 150-300 ºC. The results show the influence of HCl, SO 2, NO x and H2O vapour in the gaseous transformation of mercury identifying the major reaction pathways.
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