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H+H SCR Technology for lower NOx emissions

Do our H+H SCR systems meet the limit values ​​of the
(inter) national emission regulations?

Our H+H SCR systems comply with the following regulations in the stationary sector

44. BImSchV

Natural Gas Engines
mg/m3 (5% O2)lean-burn engines lambda-1-engines ignition engine
CO250250250
NOX100100100
SOX9 or DVGW G609 or DVGW G609 or DVGW G60
total C13003001300
formaldehyde20520
NH330-30

Biogas Engines
mg/m3 (5% O2)lean-burn enginesignition engine
CO500500
NOX100100
SOX8989
total C13001300
formaldehyde2020
Staub44

Emission limit values of 44. BImSchV for wood-fired systems

Natural Wood – New plants
mg/m3 (6% O2)1 up to < 5 MW5 up to < 20 MWfrom 20 MW
Dust352020
NOX370300200
SOX---

Natural wood – Existing plants
mg/m3 (6% O2)1 up to < 5 MW5 up to < 20 MWfrom 20 MW
Dust503030
NOX370370370
SOX---

No natural wood – New plants
mg/m3 (6% O2)1 up to < 5 MW5 up to < 20 MWfrom 20 MW
Dust303020
NOX370300200
SOX---

No natural wood – Existing plants
mg/m3 (6% O2)1 up to < 5 MW5 up to < 20 MWfrom 20 MW
Dust303030
NOX600600370
SOX---

Emission limits for natural wood for pollutants not regulated by MCPD
PollutantEmission limit value mg/m3 (6 % O2)
CO220
HCI45 (only for not natural wood)
Corg10 (new plants)
15 (existing plants)
Hg0,05 (only wood waste A II)
NH330 (only with SNCR or SCR) 

Emission limit values of 44. BImSchV for oil and gas firing

Natural gas firing – new plants
mg/m3 (3% O2)1 up to < 10 MW10 up to < 20 MWfrom 20 MW
CO805050
NOX100100100
SOX-1010
Exhaust gas loss9 %9 %-

Natural gas firing – Existing plants
mg/m3 (3% O2)1 up to < 10 MW10 up to < 20 MWfrom 20 MW
CO1108050
NOX150150150
SOX-1010
Exhaust gas loss9 %9 %-

Firing fuel oil EL – New plants
mg/m3 (3% O2)1 up to < 10 MW10 up to < 20 MWfrom 20 MW
CO808080
NOX200150-200150-200
SOX-10. BImSchV10. BImSchV
Amount of soot111
Exhaust gas loss9 %9 %-

Firing fuel oil EL – Existing plants  
mg/m3 (3% O2)1 up to < 10 MW10 up to < 20 MWfrom 20 MW
CO1508080
NOX200150-200150-200
SOX-10. BImSchV10. BImSchV
Amount of soot111
Exhaust gas loss9 %9 %-

MCP (EU) 2015/2193

Emission limit values (mg/Nm3) for new engines and gas turbines
PollutantType of medium 
combustion plant
Gas oilLiquid fuels other 
than gas oil
Natural gasGaseous fuels other 
than natural gas
SO2Engines and gas turbines-120-15
NOXEngines19019095190
NOXGas turbines75755075
DustEngines and gas turbines-10--

H+H SCR system in two stages (SCR preparation)
The limit values ​​for formaldehyde CH20 are valid from 2020, whereas the limit values ​​for nitrogen oxides NOx for
biogas engines will be valid from 2023 and for natural gas engines from 2025.

Here we recommend our H+H SCR system in two stages (SCR preparation): In the first step, an SCR housing
is provided with an oxidation catalyst in order to reduce the formaldehyde. In the second step, the system can be
expanded by the SCR catalyst, the control unit and the pump.

Our H+H SCR systems comply with the following regulations in the maritime sector

IMO MARPOL Annex VI, Regulation 13

TierGeopraphical scopeShip construction date 
(on or after)
Total weighted cycle emission limit (g/kWh)
n = engine’s rated speed (rpm)
   n < 130n = 130-1,999n ≥ 2,000
IGlobal1 January 200017.045 * n-0.29.8
IIGlobal1 January 201114.444 * n-0.237.7
IIIIn North America and
United States Caribbeans
1 January 20163.49 * n-0.22.0

Our H+H SCR systems comply with the following regulations in the inland waterway vessel

(EU) 2016/1628

EU Stage V limit values ​​and introduction dates for
the engine category IWP/IWA
     
Power (kW)CI/SICO (g/kWh)HC 1) (g/kWh)NOx (g/kWh)PM (g/kWh)PN (#/kWh)A 1)date 2)
19 ≤ P < 75both5,00(HC + NOx ≤ 4,70)0,30-6,006,0001.01.2019
75 ≤ P < 130both5,00(HC + NOx ≤ 5,40)0,14-6,006,0001.01.2019
130 ≤ P < 300both3,51,002,100,10-6,0001.01.2019
P ≥ 300both3,500,191,800,0151 * 10126,0001.01.2020

1) For gas engines the A factor must be used to determine the HC limit values
2) Date of placing on the market, type approval one year earlier than the specified date

CCR2-Norm

Overview of emission limit values ​​for Rhine ships according to RheinSchUO
DateStageMaximum Power (kW)CO (g/kWh)HC (g/kWh)NOx (g/kWh)PT (g/kWh)
2003CCNR1130 - 560 
> 560
5,0
5,0
1,3
1,3
9,2
9,2 - 12,5
0,54
0,54
2007CCNR2130 - 560 
> 560
3,5
3,5
1,0
1,0
6,0
6 - 9,5
0,2
0,2

Substantial Expericence

Personal and reliable

Our service engineers have been working for more than 30 years in the field
of exhaust gas and air treatment technology. Should you have any question,
we would be pleased to support you.