PM2.5 and Mercury Emissions From a High Ratio Fabric

PM2.5 and Mercury Emissions From a High Ratio Fabric
Filter After a Pulverized Coal Fired BoilerPaper # 200
L Lillieblad, P Wieslander
ALSTOM Power Sweden AB, P.O.Box 1233, SE-351 12, Växjö, Sweden
J Hokkinen, T Lind
VTT Technical Research Centre of Finland, P.O.Box 1602, FIN-02044 VTT, Finla
ABSTRACT
Large 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 and
offer 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 fabric
filter (HRFF) located after a pulverized coal fired boiler. The mass fractions of PM1.0, PM2.5
and PM10 at stack conditions were around 5, 15 and 80% respectively. The concentrations of
trace 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 removal
efficiencies (>80%) were obtained in two out of three tests. Injection of adsorbent before the
fabric filter could be used to support the mercury removal.请点击图标下载浏览：

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