Ozone for Flue Gas Denitrification

Nitrogen oxide (NOx) emissions from power plants and industrial facilities are a major air pollutant contributing to smog, acid rain, and respiratory health problems. An ozone generator for flue gas denitrification converts NOx to soluble nitrate, enabling efficient emission control at lower cost than traditional SCR technology.

How Ozone Denitrification Works

Ozone reacts with NO in flue gas to form NO2, which is then absorbed in a scrubber as nitric acid (HNO3) and neutralized with alkali. The process achieves 70-95% NOx removal depending on design.

Chemical reactions: NO + O3 → NO2 → HNO3 (in scrubber) → NaNO3 or Ca(NO3)2 (neutralization)

• 70-95% NOx removal efficiency

• Lower capital cost than SCR technology

• Byproduct: usable nitrate fertilizer

• No catalyst poisoning concerns

• Simpler system design and maintenance

• Effective for low-sulfur coal applications

Applications

Coal-Fired Power Plants: Ozone denitrification is especially effective for low-sulfur coal where SCR catalysts are rapidly poisoned.

Waste Incineration: NOx and dioxin control in medical and municipal waste incinerators.

Steel Manufacturing: Sintering plant and coke oven gas NOx treatment.

Conclusion

An ozone generator for flue gas denitrification offers a cost-effective, reliable solution for NOx emission control. Contact TongLin Technology for power plant denitrification solutions.