Application of 18 sets of 100kg/h Sankang Ozone in DeNoX
The oxidation characteristics of ozone
Ozone has extremely strong oxidizing ability, and its oxidation-reduction potential is second only to fluorine, higher than hydrogen peroxide, potassium permanganate, and others.
In addition, the reaction product of ozone is oxygen, making it an efficient and clean strong oxidant. The principle of ozone polymer oxidation is that ozone can oxidize insoluble NO into high valence nitrogen oxides such as NO2, N2O3, N2O5 that are easily soluble in water.
Chemical reaction mechanism of ozone
The detailed chemical reaction mechanism of ozone is quite complex. In practical applications, debugging can be carried out based on the key reaction between ozone and NO under low temperature conditions. The key reaction between O3 and NO under low temperature conditions is as follows:
NO+O3→NO2+O2 （1）
NO2+O3→NO3+O2 （2）
NO3+NO2→N2O5 （3）
NO+O+M→NO2+M （4）
NO2+O→NO3 （5）
Ozone DeNox mainly utilizes the strong oxidizing property of ozone to oxidize NO into high valence nitrogen oxides, and then absorbs and converts nitrogen oxides and sulfur dioxide into water-soluble substances in the washing tower. Combined with the tail wet washing device, it efficiently removes NOX, and the high polymer oxidation efficiency is enhanced with the increase of O3/NO. At O3/NO=0.9, the high polymer oxidation efficiency reaches 86.27%.
Factors affecting Ozone DeNox
The influencing factors of using ozone for denitrification mainly include molar ratio, reaction temperature, reaction time, absorption liquid properties, and addition method, which have varying degrees of impact on the efficiency of polymer oxidation and desulfurization.
Ozone denitrification does not require additional heat input and ensures safe, reliable, and efficient operation under different NOx sources and emission standards. Through process design optimization and flexible application, oxidation can be achieved by online detection of the chemical composition and flow rate of the tail gas source, while maintaining the continuity and consistency of operational performance. Therefore, it can greatly reduce operating costs, improve operational performance, extend operating cycles, and reduce losses in combustion equipment.
Complete absorption and high purification efficiency. Due to the fact that NO2 and N2O5 are both water-soluble substances, in alkaline environments, only a small amount of spraying is needed to completely absorb NOX from flue gas and convert it into nitrate and nitrite, resulting in high flue gas purification efficiency.
