Exhaust after treatment and monitoring system

innovative solutions for exhaust gas aftertreatment
Breeze marine Group uses innovative solutions for exhaust gas aftertreatment to save the environment.

Heavy marine fuel, oil, when burned in marine internal combustion engines and boilers, emits a large amount of exhaust gases containing soot, nitrogen oxides (NOx), hydrocarbons, sulfur oxides (Sox) and other harmful substances.

Exhaust emissions are regulated by several international organizations that establish rules that are binding on shipowners:

United States Environmental Protection Agency

US Environmental Protection Agency

Emission limits are called EPA Tier 1, Tier 2, etc. with the last level 4

International Maritime Organization

International Maritime Organization

The emission limits are specified in IMO MARPOL Annex IV, Level I, Level II, the last of which is Level III

European Union

European Union

Emission limits for off-road mobile vehicles (NRMM) are designated as EU Stage I, Stage II, etc. with the last stage V

In order not to fall under sanctions, shipowners have to choose

– switch to more expensive low-sulfur fuel, convert propulsion systems to use liquefied natural gas or clean the exhaust gases of ships, continuing to use high-sulfur fuel. The second method is the most cost-effective.

Breezemarine Group offers its customers the main products for cleaning exhaust gases:

This is the most effective and widespread technology for reducing NOx emissions. The process uses a reagent – ammonia (NH3), which mixes with exhaust gases and directed through a catalyst. With proper process control, the end products are inert nitrogen (N2), vapors (H20) and carbon dioxide (C02)

Parameters of the standard performance of the SCR installation

When selecting and implementing exhaust gas cleaning systems, Breezemarine Group uses the following algorithm, which allows us to choose the most optimal solution for our customers:


The equipment supplied as part of the project is certified in accordance with the requirements of Classification Societies and the NOx technical code associated with the SCR manual (resolution 198(62) MEPC)

The certification process includes: