Using selfdesigned measuring facility of mercury formation in flue gas from fuel coal

an experimental study on mercury emission and control has been carried out on a circulating fluidized bed （CFB） boiler firing stone coal. Results of experiment show that the electric precipitator （EP）has certain control effect for mercury emission

the mercury content in flue gas after EP is obviously lower than that before EP

the variation of mercury formation distribution in flue gas after EP being comparatively large. The mercury discharged into atmosphere is mainly mercury in single substance state. After adding limestone into fuel coal

transformation of gaseous state mercury into solid state meicury in the flue gas has occurred

being helpful for alleviating mercury.