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Cleaning system of fume gases
The cleaning system of fume gases consists of an activated
carbon system/filter, secondary cooler and absorbent columns.
The cleaning of fume gases is being carried out in accordance
with the EU directive 94/67/EC "On the Incineration of Hazardous
Waste".
The admissible limit concentrations
of polluting components in exhaust fumes resulting from the
incineration facility
Activated carbon system/cloth filter
The cleaning
system of fume gases is equipped with activated carbon system
to enhance the effectiveness of the cleaning of fume gases
from dioxines and furanes. The activated carbon is being introduced
into a pipe after the heat converter, and then it is being
educed in the filter. Absorption process starts already in
the pipe, but the most important part in the cleaning of fume
gases is cloth filters, which as a result of the process get
covered with a layer of activated carbon. Cloth filters have
effective filter cleaning system.
Secondary cooler
After
the cloth filter fume gases get into the secondary cooler,
where they are being cooled down with the cooling water from
180°C to 80°C. Simultaneously, chlorine hydrogen and volatile
heavy metals are being educed from fume gases. The resulting
sewage is being conveyed to the treatment plants.
Absorbent system
In order
not to exceed the determined admissible emission concentration
of sulphuric dioxide and chlorine hydrogen, the facility has
an absorbent system, which consists of two vertical columns
with cladding. Fume gases are being flushed with natrium hydrogen
solution, which absorbs sulphuric dioxide and chlorine hydrogen.
Sewage get into the sewage treatment plants.
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