BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Art. 5.20.3.10 Existing installations
For existing installations the provisions of this section apply as of 1 January 1998.
Annexes
Section 5.20.4 The production of glass fibre or rock fibre and glass wool, the manufacture
of glass (flat, concave and special glass) and the manufacture of crude
ceramics
Subsection 5.20.4.1 The production of glass (flat, concave and special glass) and of glass
fibre or rock fibre
Art. 5.20.4.1.1
§ 1. Reference value
The emission limit values for flame-heated glass melting furnaces concern a volume level of
8 %, and with flame-heated crucible kilns and open tiling a volume level of oxygen in the spent
gas of 13 %.
§ 2. Nitrogen oxides
The emissions of nitrogen monoxide and nitrogen dioxide, expressed in nitrogen dioxide, in the
gaseous effluent may not exceed the following values:
oil fired
[g/Nm 3 ]
gas fired
[g/Nm 3 ]
crucible kilns 1.2 1.2
tiling with recuperative heat
recovery
1.2 1.4
open tiling 1.6 1.6
U-fire tiling with regenerative
heat recovery
1.8 2.2
crossfiring tiling with regenerative
heat recovery
3.0 3.5
Insofar from production quality considerations purification with nitrate is necessary, the emissions
may not exceed double the values specified in the previous subsection.
All possibilities for the reduction of emissions of nitrogen oxides by means technical heating
measures and other available measures are to be applied.
§ 3. sulphur oxides.
The emissions of sulphur dioxide and sulphur trioxide in the spent gas, expressed in sulphur
dioxide, may not exceed the following values at a mass flow of 10 kg/h or more with firing:
a) glass melting furnaces: 1.8 g/Nm 3
b) crucible kilns and open tiling: 1.1 g/Nm 3
Subsection 5.20.4.2 Production of crude ceramics
Art. 5.20.4.2.1
§ 1. Reference value
The emission limit values concern a volume level of oxygen in the gaseous effluent of 18 %.
§ 2. Sulphur oxides
With a sulphur content of the raw materials of less than 0.12 %, the emissions of sulphur dioxide
and sulphur trioxide, expressed in sulphur dioxide in the gaseous effluent at a mass flow of
10 kg/h or more, may not exceed 0.5 g/Nm 3 .
Waste Water and Waste Gas Treatment 407