Denitrification
Magnesium hydroxide can be used as a denitrifying agent to remove nitrogen oxides (mainly NOx) in two ways:
1. Selective Catalytic Reduction (SCR)
Magnesium hydroxide is used as a SCR catalyst carrier loaded with a reducing agent such as ammonia or urea.
The reducing agent reacts with the NOx to produce harmless nitrogen and water.
2. Selective Non-Catalytic Reduction (SNCR)
Magnesium hydroxide is used as a reducing agent and reacts directly with NOx at high temperatures.
The products generated by this reaction include nitrogen and water.
![Magnesium Hydroxide Desulfurization Magnesium Hydroxide Desulfurization](https://meixi-mgo.com/wp-content/uploads/2024/04/Magnesium-Hydroxide-Desulfurization.webp)
Advantages:
High removal efficiency for SO2 and NOx.
By-products are stable and harmless.
No secondary pollution.
Relatively low price.
Disadvantages:
Reaction requires relatively high temperature and pressure.
For high concentrations of SO2 or NOx, a larger reactor volume may be required.
May generate dust and require additional dust control measures.
Applications
![Flue gas desulfurization and denitrification in power plants Flue gas desulfurization and denitrification in power plants](https://meixi-mgo.com/wp-content/uploads/2024/04/Flue-gas-desulfurization-and-denitrification-in-power-plants.webp)
Flue gas desulfurization and denitrification in power plants.
Industrial boiler flue gas desulfurization and denitrification.
Flue gas desulfurization and denitrification in waste incineration plants.