| 摘要 |
A process and apparatus for removing SO2, NO, and NO2 from a gas stream havi ng the steps of oxidizing (60) a portion of the NO in the flue gas stream to NO2, scrubbing (62) the SO2, NO, NO2 with an ammonia scrubbing solution, and removing (64) any ammonia aerosols generated by the scrubbing in a wet electrostatic precipitator. The process can also remove Hg by oxidizing it to HgO and removing it in the wet electrostat ic precipitator. Ammonium sulphate, a valuable fertilizer, can be withdrawn fro m the scrubbing solution.
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