BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
Art. 5.20.3.4 Riser pipe covers
For the avoidance of gas and coal tar emissions, riser pipe covers must be fitted with devices
for keeping wet with water or equivalent devices.
Art. 5.20.3.5 Coke oven operating machines
Coke oven operating machines must be fitted with devices for the cleaning of the sealing surfaces
at the oven door frames.
Art. 5.20.3.6 Coke oven doors
Coke oven doors with a large sealing effect must be used, for example diaphragm doors or
doors with an equivalent sealing effect. The sealing surfaces of the oven doors must be regularly
cleaned.
Unless specified otherwise in the environmental licence, the coke oven batteries are to be arranged
in such a way that on the machine side and on the coke side door extraction units with
dedusting devices can be installed.
Art. 5.20.3.7 Pushing out of coke
With the pushing out of coke the spent gases must be collected and led to a dedusting installation.
Unless specified otherwise in the environmental licence, the dust concentration in the emissions
will not exceed the emission limit value of 50 mg/Nm 3 , and the dust-containing emissions may
not exceed 5 gram per tonne of produced coke.
Art. 5.20.3.8 Coke cooling
§ 1. If dry cooling is applied, unless specified otherwise in the environmental licence, the dust
emissions in the gaseous effluent may not exceed 20 mg/m 3 .
§ 2. If wet cooling is applied, the quenching tower used must be fitted with built-in dust extractors.
As a derogation from the general emission limit values laid down in article 4.4.3.1, the emission
limit values are expressed in gram per tonne of coke. Unless specified otherwise in the environmental
licence, an emission limit value of 60 gram suspended particulates per tonne coke,
measured according to the VDI directive VDI 2303 or another equivalent measuring method
approved by an environmental expert accredited in the discipline air, may not be exceeded.
Art. 5.20.3.9 Operating manual
An operating manual must contain measures for the reduction of emissions with the operation
of the coke oven, in particular regarding:
1. the sealing of the openings
2. the guaranteeing that only fullycoked material will be pushed out
3. the avoidance of unburned gases escaping into the atmosphere.
406 Waste Water and Waste Gas Treatment