Ozone reaction device for flue gas denitration

Abstract

Relating to the technical field of flue gas purification, the invention provides an ozone reaction device for flue gas denitration. The ozone reaction device consists of a first reaction chamber, a second reaction chamber, a first ozone jet apparatus and a second ozone jet apparatus. The first reaction chamber is provided with a first air inlet, and the second reaction chamber is equipped with a second air inlet communicated with the first reaction chamber and an air outlet communicated with an external washing tower. The first ozone jet apparatus and the second ozone jet apparatus are respectively used for jetting ozone into the first reaction chamber and the second reaction chamber. The ozone reaction device provided by the invention effectively realizes time-shared and partitioned oxidation of nitrogen oxide (NOX), step-by-step jetting of ozone is conducive to controlling the generation time and generation amount of N2O5, thus being in favor of improving the ozone utilization and preventing excessive loss of ozone.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to an ozone reaction device for flue gas denitrification. Background technique [0002] Nitrogen oxides (NO X ) is usually produced by stationary pollution sources, such as industrial boilers, gas turbines, coal-fired power plants, etc., and is one of the most important air pollutants today. It not only leads to greenhouses, but also contributes to ozone (O 3 ) is massively converted to oxygen (O 2 ), thereby destroying the ozone layer. Ozone-based oxidation denitrification mainly uses the strong oxidizing properties of ozone for oxidative denitrification, oxidizes insoluble low-valence nitrogen oxides into soluble high-valence nitrogen oxides, and then absorbs nitrogen oxides in the washing tower, achieve the purpose of removal. [0003] However, the oxidized nitrogen oxides are mainly NO 2 and N 2 o 5 Two valence states exist. Ozone oxidizes NO to produce NO...

AI Technical Summary

Problems solved by technology

Ozone oxidizes NO to produce NO 2 The activation energy required is much lower than the oxidation of NO 2 form N 2 o 5 The required activation energy, so the single-point dosing method is adopted. In the case of insufficient ozone dosage, the added ozone and the NO in the flue gas X The mixing effect is not good, and it is not easy to produce N 2 o 5 , or the generation time is earlier leading to the N generated before entering the scrubber 2 o 5 Decomposition, and the excessive dosing of ozone has caused the waste of ozone, resulting in low ozone utilization rate and large consumption

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