| abstract |
The utility model discloses a high-efficiency and energy-saving boiler tail flue gas treatment flue, which comprises the flue modification of the horizontal flue between the outlet of the economizer of the boiler and the inlet of the electric precipitator. The bottom planes of the horizontal flue 2 and the horizontal flue 3 are respectively down inclined according to the flue gas flow direction a, b, c; at the same time, a waste steam and alkali spray device is arranged in the vertical flue at the inlet of the absorption tower; thereby weakening the horizontal smoke It can reduce the dust accumulation in the channel and SCR reaction zone, reduce the dust accumulation and blockage of the air preheater heat accumulator, reduce the wear of the induced draft fan blades, reduce the working pressure of the electrostatic precipitator, reduce the power consumption of the dust removal system, and reduce the blowing capacity of the air preheater. The consumption of ash and steam increases the reaction degree of ammonia gas in SCR, and at the same time reduces the power consumption occupied by the absorption tower desulfurization. |