| 摘要 |
<p>Elemental mercury is removed from coal-fired utilities (10) by the selective photoionization of mercury atoms using ultraviolet light (14), followed by electrostatic precipitation (12) of the mercury ions. Mercury is first exposed to light (14) of a wavelength withich boosts the mercury to an excited state. Then mercury is ionized using light of a different wavelength. The ionized mercury atoms are exposed to supersaturated water vapor (16) to produce charged droplets which are precipitated, such that the exhaust effluent is substantially devoid of mercury or the mercury level is substantially reduced.</p> |
