plasmaNorm® Data Sheet
page 21
plasmaNorm®
Technology
Plasma chemical process with atmospheric Plasma (DBD) for gas cleansing, exhaust air treatment of mole-
cular, chemical and biological pollutants, and removal of odours by an activated carbon filter
Applications
The technology was developed for the complete removal of cooking odours, and simultaneously sterilises
the air. The
plasmaNorm®
gas cleansing technology (a non-thermal, plasma chemical process with atmos-
pheric i.e. normal pressure plasma) treats intake, ambient or exhaust air for the environmentally safe
re-
moval of the smallest gaseous, organic carbon compounds such as odour molecules, viruses, bacte-
ria, spores etc.
Solids and aerosols are removed in a
hydroSorp®
pre-filter.
The plasma chemical technology was developed by
the Leibniz-Institute for Plasma Science and Technology, Germany.
plasmaNorm®
technology consists of several stages:
1. Pre separation
Here, the polluted gas is stripped of solids, aerosols and particulates. Appropriate filter media such as bag
filters (e.g., the
hydroSorp®
separator for damp or oily air) are used according to the air impurities to be
removed.
2. Reaction processes and oxidation
After pre-filtering, the air is subjected to a plasma-based reaction and oxidation process. While passing
through a high-voltage discharge source (atmospheric plasma) enriches the pre-filtered dirty gas with
monoatomic oxygen.
Highly reactive radicals and ions initiate an oxidation and decomposition process in which the carbon com-
pounds are either stimulated to reactions or react directly with the oxygen atoms.
3. Active carbon storage
Compounds not yet been oxidised are retained in the activated carbon bed and oxidised there. The activated
carbon functions as a storage reactor that, among other effects, reverts ozone to atmospheric oxygen. The
special characteristic of this technology is the economical,
extremely long serviceable life of the activated
carbon,
as it
regenerates itself
during the process; exchange is only necessary in exceptional cases.
Servicing and residues
The pre-filter of a
plasmaNorm®
installation must be regularly cleared of separated residues (
hydroSorp®
filters can be cleaned in a washing machine
).
plasmaNorm®
Schematic diagram of a
plasmaNorm®
process
