plasmaNorm plasmaNorm

Plasma chemical process with atmospheric Plasma (DBD) for gas cleansing, exhaust Technology air treatment of molecular, 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 simultaneous sterilisation of the air. The plasmaNorm gas cleansing technology (a non-thermal, plasma chemical process with atmospheric i.e. normal pressure plasma) treats intake, ambient or exhaust air for the environmentally safe removal of the smallest gaseous, organic carbon compounds such as odour molecules, viruses, bacteria, spores etc. Solids and aerosols are removed in a hydroSorp pre-filter.

The plasma chemical technology was developed by the Greifswald Institut für NiedertemperaturPlasmaphysik, 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 mono-atomic oxygen.

Highly reactive radicals and ions initiate an oxidation and decomposition process in which the carbon compounds are either stimulated to reactions or react directly with the oxygen atoms.

3. Active carbon storage

Compounds not yet 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 installations should be inspected occasionally. The whole process produces only CO2 and water.

Schematic diagram of a plasmaNorm process

plasmaNorm

Subject to technical change without notice. All rights reserved. © 2014 plasmaNorm competence GmbH

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Above: a plasmaNorm installation for 5,000 m3 of extract air per hr. Left, the yellow hydroSorp pre-filter. The fan, centre, drives pre-cleansed air through the plasma stage (green rings). Unoxidised molecules are caught in the activated carbon filter (black tube) where they react with oxygen. End products leaving the activated carbon filter are oxygen, carbon dioxide and atmospheric moisture.

Technical specification:
Reactive and oxidation technology: atmospheric plasma using dielectric barrier discharge (DBD)
Exhaust air volume through plasmaNorm: up to 60,000 m3 / h
Power ratings: from 0.2 to 2.0 kW excluding ventilation (various sizes available on request)

Example: "aereus" for rooms of 50 –100 m2 Cleansed air volume: 1,200 m3 / h
Power / energy consumption: ventilator 95 Watt + plasma stage 20 Watt = 0.115 kWh using the intensive setting
Cleansing 3,600 m3 / h, the largest "aereus" model consumes 1.1 kW per hour.
Material: stainless steel or aluminium modular construction