SCR System

STX Engine provides all services related to design, manufacture, sales, after-sales services, etc., and is responding to diversifying market demands and severe regulations based on its long experience and know-how.

The IMO Tier III requirements reduce nitrogen-oxide emissions by approximately 76% in comparison to a Tier II engine.
Reinforced environmental regulation for emissions to air-IMO NOx Tier III relevant for all vessels with keel laying on or after 1 January 2016 with engine output of 130kW and above, when operating in NOx emission control areas.
STX-SCR system is the latest and the most proven technology to promise reducing NOx emissions by and upto 90% and it also provide best solutions such as Internal By-pass system, NOx feedback control to fit variety of needs.

STX-SCR SYSTEM Layout

STX-SCR SYSTEM Layout

STX-SCR SYSTEM Group

All components will be selected according to engine power.
This table is the references for system design.

Classification Engine power(kw) Reactor DimensionH(mm) / W(mm) / D(mm) Mixer+pipe(DN) 40% Urea Cons.(liter / hr / engine)
Group 1 500 ~ 900 2,500 / 890 / 1,020 350 10
Group 2 910 ~ 1,400 2,400 / 1,210 / 1,020 450 12
Group 3 1,470 ~ 2,000 2,400 / 1,680 / 1,490 500 29
Group 4 2,100 ~ 3,000 2,500 / 1,680 / 1,650 700 38
Group 5 3,500 2,600 / 1,680 / 1,650 700 38
Group 6 4,000 2,700 / 1,990 / 1,920 750 55
Group 7 4,500 2,700 / 1,990 / 1,960 800 58
Group 8 6,000 3,000 / 2,300 / 2,270 900 70
Group 9 7,000 3,200 / 2,460 / 2,430 1,000 83
Group 10 8,000 3,200 / 2,620 / 2,590 1,100 94
Group 11 9,000 3,200 / 2,770 / 2,740 1,200 107

Reactor Dimension

Contact Point

Mr. Hee Hwan Roh (Eco-friendly Development Team)
+82-55-280-0862myamo@stxengine.co.kr