BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
CO emission standards [mg/Nm 3 ] when using heating oils as fuel
Pollutant Capacity a [MW]
�1 MW >1 MW
CO 100 80
a The capacity is defined as the average of the hourly added amount of heat related to the calorific
value of the fuel
The emission standards for liquid fuels are related to dry exhaust gas at 0 °C, a pressure of
101.3 kPa and an oxygen content of 3 % in the exhaust gas
For NO x, different emission standards for different kinds of heating oils are distinguished.
Again the thermal output is a further criterion for the emission standard. The next table
shows the different NO x emission standards.
NOx emission standards [mg/Nm 3 ] when using heating oils as fuel
Fuel Capacity a [MW]
�3 MW >3–10 MW >10–50 MW >50 MW
Heating oil extra light 150 150 150 100
Heating oil light 450 400 350 100
Heating oil medium 450 450 350 100
Heavy fuel 450 450 350 100
a The capacity is defined as the average of the hourly added amount of heat related to the calorific value of the
fuel
The emission standards for liquid fuels are related to dry exhaust gas at 0 °C, a pressure of 101.3 kPa and an
oxygen content of 3 % in the exhaust gas
c) Gas-fired plants
For plants using gaseous fuels (natural gas or liquefied petroleum gas) the “Feuerungsanlagenverordnung”
only provides emission standards for NOx and CO.
Emissions standards for gaseous fuels
Pollutant Fuel Capacity a [MW]
�3 MW >3 MW
CO
[mg/Nm 3 ]
Natural gas 80 80
Liquefied petroleum gas 80 80
Natural gas 120 100
NOx
[mg/Nm 3 ]
Liquefied petroleum gas 160 130
a
The capacity is defined as the average of the hourly added amount of heat related to the calorific value of the
fuel
The emission standards for liquid fuels are related to dry exhaust gas at 0 °C, a pressure of 101.3 kPa and an
oxygen content of 3 % in the exhaust gas
For combustion plants with high temperature processes, higher NO x emissions are allowed.
Using natural gas, 200 mg/Nm³ NO x and using liquefied petroleum gas, at maximum
260 mg/Nm³ NO x are allowed.
The requirement for continuous measurements of different pollutants depends on the fuel
type and on plant capacity.
Thresholds above which continuous measurement is required
Fuel Pollutant
Dust CO SO2 NOx
Solid >10 MW >10 MW >30 MW >30 MW
Liquid >10 MW >10 MW >50 MW >30 MW
Gaseous - >10 MW - >30 MW
This ordinance came into force on 1.6.1998. Combustion plants which were improved before
this date have to comply with the emission values of this ordinance within five years,
or if they do exceed these values for not more than 50 % they have to keep the emission
limits eight years later.
352 Waste Water and Waste Gas Treatment