| abstract |
The invention discloses a method for removing SO by using an SCR (Selective catalytic reduction) denitration device 3 The device and the method comprise an alkaline particle storage tank, a feeder, a compressed air storage tank, a first valve, a second valve, a first flowmeter, a second flowmeter, an ammonia buffer tank, a mixer, an economizer outlet flue, an SCR inlet horizontal flue, a flue gas diversion device, an SCR inlet vertical flue, an SCR denitration catalyst layer, an SCR reactor and an SCR outlet flue; an ammonia spraying grid is arranged in the horizontal flue of the SCR inlet or the vertical flue of the SCR inlet; the outlet of the ammonia buffer tank is communicated with the inlet of the mixer; the outlet of the compressed air storage tank and the outlet of the feeder are communicated with the inlet of the mixer after being connected by a pipeline, and the alkaline particles are storedThe outlet of the tank is communicated with the inlet of the feeder, the outlet of the mixer is communicated with the inlet of the ammonia spraying grid, and the device and the method can simultaneously realize denitration and SO 3 The removal of (2) has the characteristics of simple structure and high reliability. |