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Marine Ammonia (NH3) Emission Control SolutionApr 16, 2026

Marine Ammonia (NH?) Emission Control Solution

Reliable NH? Slip Removal & NOx Reduction for Green Ammonia-Fueled Vessels

As green ammonia is increasingly adopted as a carbon-free marine fuel, ammonia (NH?) has become a critical emission control target in marine exhaust gas treatment. In SCR denitrification systems, improper ammonia dosing or unstable operating conditions can lead to ammonia slip, which may cause secondary pollution, particulate formation, and corrosion risks.

Key Challenge: What is Ammonia Slip?

Ammonia slip refers to unreacted NH? escaping from the SCR system and entering downstream exhaust gas.

4NO + 4NH? + O? → 4N? + 6H?O

Why NH? Control Matters in Marine Exhaust Treatment

1) Secondary PM Formation

NH? + HCl → NH?Cl
2NH? + H?SO? → (NH?)?SO?

These reactions contribute to fine particulate matter (PM2.5 precursors) and visible plume risks.

Chaori Integrated NH? Slip Control Solution

  • SCR mixing optimization for stable NOx conversion
  • Downstream scrubber absorption to capture residual NH?
  • Multi-stage treatment with mist elimination
  • Optional online monitoring for closed-loop adjustment

Request a Technical Proposal

Send us your vessel type, exhaust flow rate, temperature, and target emission requirements. Our engineers will recommend a customized configuration for NOx and NH? control.