Exploring Haina's Intelligent Denitrification Solution: How We Tackle the Variable Load Challenge of Industrial Boilers

The load of industrial boilers varies. However, most denitrification systems assume steady - state operation—this leads to low efficiency in nitrogen oxide (NOx) reduction during low - load periods.

Haina directly addresses this issue with an adaptive SNCR + SCR hybrid solution tailored to actual operating conditions.
Key Innovations:
Optimized ammonia injection: Multi - port injection guns can be dynamically adjusted according to the temperature distribution (ammonia injection temperature is 850 - 1100°C).
Low - temperature ammonia evaporation system: When the injection temperature is below 300°C, it prevents liquid ammonia entrainment, reduces the risk of corrosion, and extends the service life of the catalyst.
Flexible catalyst selection: From high - dust (18 - 20 holes/in²) to low - dust (22 - 25 holes/in²), we select the appropriate catalyst according to the dust load and alkali metal exposure.

Our latest project in Vietnam has achieved stable NOx emissions of less than 50 mg/Nm³ even when the load fluctuates between 40% - 100%, thanks to the intelligent control logic and a robust catalyst formula resistant to potassium poisoning.
"We treat each boiler as a unique ecosystem," explained Technical Director Li. "A one - size - fits - all approach doesn't work in emission control."
As countries adopt stricter NOx limits, Haina's flexible denitrification architecture provides a future - oriented solution for compliance.