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36 | Regulations and operating conditions
5.2
German Immissions Act (BImSchG)
5.2.1
Table extracted from the 1st BImSchV "Small
and medium-sized combustion systems"
Combustion equipment is to be operated in
such a way that the limits specified in the
1st BImSchV and the TA Luft are not
exceeded.
Fuels
Rated heat input of the system Q
Flue via chimney
Soot value
Nitrogen oxides NO
under test conditions
X
1)2)
for boiler
Q
< 120 kW
K
120 kW ≤ Q
< 400 kW
K
400 kW ≤ Q
< 10000 kW
K
With dual combustion, if oil operation is
≤ 300 h/a, the following NO
Nitrogen oxides NO
in steam boilers
X
Efficiency at rated boiler output
Q
> 400 kW
K
Flue losses
4 kW ≤ Q
≤ 25 kW
FA
25 kW < Q
50 kW
FA
Q
> 50 kW
FA
Repeat tests as per para. 15
regarding soot value, CO emissions, flue
loss
Emissions monitored by
Emissions specifications for individual combustion output ≥ 10 MW < 20 MW
Fuels
Rated heat input of the individual
combustion Q
FE
Flue via chimney
5)
Carbon monoxide CO
Nitrogen oxides NO
at boiler operating
X
4)6)
temperature
< 110 °C (< 0.5 bar)
≥ 110 °C ≤ 210 °C (≥ 0.5 bar ≤ 18 bar)
> 210 °C (> 18 bar)
With dual combustion, if oil operation is
≤ 300 h/a, the following NO
for all boiler temperatures
Repeat test acc. to para. 18 (1)–(3)
First test acc. to para. 18(4)
1) Emissions calculation to EN 267
2) Boiler definition: heat transfer medium water; used for heating buildings and rooms
3) Systems that were commissioned or that underwent major modifications (boiler replacement or fuel conversion) 12 years ago or less
4) Systems that were commissioned or that underwent major modifications (boiler replacement or fuel conversion) more than 12 years
ago
6 720 807 794 (2013/04)
Natural gas, LPG,
hydrogen gas, gases
from the public
mains supply
< 20 MW
FA
Derived conditions acc. to 1st BImSchV para. 18 for Q
60 mg/m
80 mg/m
120 mg/m
limit applies
X
Keep to a minimum, no fixed stipulations, "latest available technology"
2)
Newer systems
Natural gas, LPG,
gases from the
public mains supply
100 mg/m
110 mg/m
150 mg/m
limit applies
X
7)
No sooner than 3 months and no later than 6 months after commissioning
Sewer gas, biogas, coke
oven gas, marsh gas,
furnace gas, refinery gas,
synthetic gas
< 10 MW
–
–
3
60 mg/m
n
3
80 mg/m
n
3
120 mg/m
n
–
–
≥ 94 %
11 %
10%
9 %
3)
: every 3 years; older systems
Flue gas inspector
Hydrogen gas
≥ 10 < 20 MW
Derived conditions acc. to TA Luft
80 mg/m
3
200 mg/m
n
3
200 mg/m
n
3
200 mg/m
n
–
–
–
–
Fuel oil EL, vegetable
oil, vegetable methyl
ester, methanol,
ethanol
< 20 MW
≥ 1 MW
FA
RZ ≤ 1
3
3
110 mg/m
n
3
3
120 mg/m
n
3
3
185 mg/m
n
3
250 mg/m
4)
: every 2 years
Fuel oil EL, vegetable oil,
vegetable methyl ester,
methanol, ethanol
3
n
3
180 mg/m
n
3
200 mg/m
n
3
250 mg/m
n
250 mg/m
Flue gas opacity
Heavy oil
n
n
n
n
not
permitted
3
n
3
n
3
n
3
n
UNIMAT
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