PM2.5 and Mercury Emissions From a High Ratio Fabr

PM2.5 and Mercury Emissions From a High Ratio FabricFilter After a Pulverized Coal Fired BoilerPaper # 200L Lillieblad, P WieslanderALSTOM Power Sweden AB, P.O.Box 1233, SE-351 12, Växjö, SwedenJ Hokkinen, T LindVTT Technical Research Centre of Finland, P.O.Box 1602, FIN-02044 VTT, FinlaABSTRACTLarge efforts are made to limit the emissions of fine particles and mercury from coal combustion.Modern fabric filters are certainly an alternative for an efficient removal of fine particles andoffer also the option to inject adsorbents to improve the removal of mercury.In this study the particle size distribution was measured after a modern design high ratio fabricfilter (HRFF) located after a pulverized coal fired boiler. The mass fractions of PM1.0, PM2.5and PM10 at stack conditions were around 5, 15 and 80% respectively. The concentrations oftrace elements like As, Cd, Co, Cu, Pb and Sb in different particle sizes were also established.The mercury removal without any adsorbent injection was measured. High mercury removalefficiencies (>80%) were obtained in two out of three tests. Injection of adsorbent before thefabric filter could be used to support the mercury removal.请点击图标下载浏览：附件