| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a highly efficient stack gas treating system capable of lowering cost and saving space. SOLUTION: A boiler 1, an air preheater 3 (A/H) a gas-gas heater (GGH) heat recovery device 5, a complete-vaporization cooling tower 11, a dry electrostatic precipitator 4 (EP), a dry discharge denitrating and desulfurizing device 12, a dry electrostatic precipitator 4 (EP), a gas-gas heater (GGH) rehater 8 and a stack 9 are successively connected to constitute a stack gas treating system. A metallic parallel-plate electrode is used as a grounded electrode in the dry discharge denitrating and desulfurizing device 12, and a nozzle electrode is used as the discharge electrode. A positive-electrode voltage source is connected to the nozzle electrode to generate a corona discharge, and an injection gas is introduced into a discharge reactor from the nozzle electrode.</p> |
