 
         
    Selective Catalytic Reduction
현대중공업은 Tier III 한계에 맞게 설계되어 Nox 배출량을 95%까지 줄일 수 있는 NoNOxTMSCR 기술을 제공합니다. 현대중공업은 낮은 생산원가를 달성하고 고객에게 이익을 주기 위해 설치, 성능 및 엔진 전체를 최적화하고 있습니다.
SCR은 화학반응 과정을 통해 배기가스의 NOx를 줄일 수 있는 기술입니다. 요소 용액은 일반적으로 뜨거운 가스 흐름에서 암모니아와 이산화탄소로 분해되기 때문에 환원제로 채택됩니다.
 
                     
                Low Pressure SCR for 4-Stroke (<0.1% or <3.5% fuel sulfur design)
 
             
                 
                    
                            Low pressure SCR for 2-Stroke engine
                            (<0.1% fuel sulfur only)
                        
 
                    
                            High pressure SCR for 2-Stroke engine 
                            (<0.1% or <3.5% fuel sulfur design))
                        
 
                 
                 
                | Fuel | Pros | Cons | CO2 (Tank to propeller, Oil is 1.0) | TRL1) (Technology Readiness Level) | Fuel Cost (ton) | Eng. Cost (Main Engine, oil is 1.0) | 
|---|---|---|---|---|---|---|
| LNG | 
 | 
 | 0.8 | 9 | $310 | 1.4 | 
| LPG | 
 | 
 | 0.9 | 9 | $340 | 1.5 | 
| Methanol | 
 | 
 | 0.9 | 6 | $410 | 1.5 | 
| Ammonia | 
 | 
 | 0.1 | 2 | $500 | 1.7 | 
| Hydrogen | 
 | 
 | 0.0 | - | Over $10,000 | N/A | 
| Fuel | Pros | Cons | CO2 (Tank to propeller, Oil is 1.0) | TRL1) (Technology Readiness Level) | Fuel Cost (ton) | Eng. Cost (Main Engine, oil is 1.0) | 
|---|---|---|---|---|---|---|
| LNG | 
 | 
 | 0.8 | 9 | $310 | 1.4 | 
| LPG | 
 | 
 | 0.9 | 9 | $340 | 1.5 | 
| Methanol | 
 | 
 | 0.9 | 6 | $410 | 1.5 | 
| Ammonia | 
 | 
 | 0.1 | 2 | $500 | 1.7 | 
| Hydrogen | 
 | 
 | 0.0 | - | Over $10,000 | N/A | 
| Property | MGO | LNG | LPG | Methanol | L_NH3 | L_H2 | 
|---|---|---|---|---|---|---|
| Flash point [℃] | 52 | -188 | -105 | 11 | 132 | -150 | 
| Auto ignition temperature [℃] | 250 | 595 | 459 | 464 | 651 | 535 | 
| Boiling point at 1 bar [℃] | 20 | -162 | -42 | 20 | -34 | -253 | 
| Low Heating Value [MJ/kg] | 42.7 | 50.0 | 46.0 | 19.9 | 18.6 | 120 | 
| Density at 1 bar [kg/m3] | 870 | 470 | 580 | 792 | 682 | 71 | 
| Energy density [MJ/L] | 36.6 | 21.2 | 26.7 | 14.9 | 12.7 | 8.5 | 
| Fuel tank size | 1.0 | 1.7 | 1.4 | 2.5 | 2.9 | 4.3 | 
| Ignition energy [MJ] | 0.23 | 0.28 | 0.25 | 0.14 | 8 | 0.011 | 
| Flammable concentration range in the air [%] | 0.6 - 7.5 | 5 - 15 | 2.2 - 9.5 | 5.5 - 44 | 15 - 28 | 4 -75 | 
| Property | MGO | LNG | LPG | Methanol | L_NH3 | L_H2 | 
|---|---|---|---|---|---|---|
| Flash point [℃] | 52 | -188 | -105 | 11 | 132 | -150 | 
| Auto ignition temperature [℃] | 250 | 595 | 459 | 464 | 651 | 535 | 
| Boiling point at 1 bar [℃] | 20 | -162 | -42 | 20 | -34 | -253 | 
| Low Heating Value [MJ/kg] | 42.7 | 50.0 | 46.0 | 19.9 | 18.6 | 120 | 
| Density at 1 bar [kg/m3] | 870 | 470 | 580 | 792 | 682 | 71 | 
| Energy density [MJ/L] | 36.6 | 21.2 | 26.7 | 14.9 | 12.7 | 8.5 | 
| Fuel tank size | 1.0 | 1.7 | 1.4 | 2.5 | 2.9 | 4.3 | 
| Ignition energy [MJ] | 0.23 | 0.28 | 0.25 | 0.14 | 8 | 0.011 | 
| Flammable concentration range in the air [%] | 0.6 - 7.5 | 5 - 15 | 2.2 - 9.5 | 5.5 - 44 | 15 - 28 | 4 -75 |