Hydrogen-peroxide high-efficiency utilization method and apparatus for desulphurization and denitration of low-temperature flue gas

[0028] Such as figure 1 As shown, a schematic structural view of the first embodiment of the present invention is provided, which is composed of a hydrogen peroxide storage tank 1, a slurry pump 2, a vaporizer 3, a flue 4, and an absorption tower 5. In the shown hydrogen peroxide storage tank 1 Liquid hydrogen peroxide is stored, and the feed pump 2 pumps the hydrogen peroxide in the hydrogen peroxide storage tank 1 into the vaporizer 3 . The liquid hydrogen peroxide is vaporized in the vaporizer 3 and converted into gaseous hydrogen peroxide. The vaporization temperature of the vaporizer 3 is 60-130° C., and the vaporizer 3 forms a feeding device for directly heating and vaporizing the liquid hydrogen peroxide. The vaporized hydrogen peroxide is passed into the flue 4, and the gaseous hydrogen peroxide contains more hydroxyl radicals, which enter the airway to participate in the denitrification reaction, which can significantly increase the NO x , SO 2 The removal rate, b...

[0030] Such as figure 2 As shown, the structural representation of the second embodiment of the present invention is provided, which consists of a hydrogen peroxide storage tank 1, a feed pump 2, a bubbling chamber 9, a carrier gas tank 6, an air intake pump 7, a preheater 8, a drum The bubble chamber 9, the flue 4 and the absorption tower 5 are composed, and the carrier gas tank 6, the intake pump 7, the preheater 8 and the bubble chamber 9 form a hot carrier gas bubbling feeding device in hydrogen peroxide. The feed pump 2 pumps the liquid hydrogen peroxide in the hydrogen peroxide storage tank 1 into the bubbling chamber 9, the carrier gas stored in the carrier gas tank 6 is air or an inert gas, and the intake pump 7 pumps the carrier gas in the carrier gas tank 6 to Heating is carried out in the preheater 8 , the heating temperature is 80-150° C., and the heated carrier gas is passed into the bubbling chamber 9 . After the carrier gas enters the bubbling chamber 9, it ca...

[0032] Such as image 3As shown, the structural representation of the third embodiment of the present invention is provided. Compared with Embodiment 2, the present embodiment adopts a carrier gas tank 6, an intake pump 7, a preheater 8, a vaporizer 3 and a mixing chamber. The hot carrier gas carrying hydrogen peroxide steam feeding device composed of 10 is used to replace the hot carrier gas bubbling feeding device in hydrogen peroxide in Example 2, except that the rest of the structure is the same. In this embodiment, the feed pump 2 pumps the liquid hydrogen peroxide in the hydrogen peroxide storage tank 1 into the vaporizer 3 to be vaporized to generate gaseous hydrogen peroxide, and the gaseous hydrogen peroxide is passed into the mixing chamber 10 . The intake pump 7 pumps the carrier gas in the carrier gas tank 6 into the preheater 8 for heating, and the heated carrier gas passes into the mixing chamber 10 and enters the flue 4 with gaseous hydrogen peroxide. Gaseous h...