KOENIG
New Low-Cost Concept for solving exhaust air odour problems

Sensitivity to disturbing odours, particularly in residential areas, has increased sharply in recent years with even the slightest odour disturbance resulting in complaints from neighbours. This is often quickly followed by the intervention of the Environmental Protection Agency. Great importance is, therefore, attached to the problem of odours in the EU environmental legislation.

The exhaust air from textile treatment processes often contains odours regarded by people around the plant as disturbing.

Exhaust air cleaning processes such as exhaust air scrubbers or electric filters can often achieve only an inadequate odour reduction, since the odour agents generally take the form of water insoluble, non-condensable gases.

An innovative process for eliminating odours from textile exhaust air is now available from Swiss eco engineering specialist Koenig AG and is suitable for finishers and manufacturers of technical fabrics.

Dosing unit for OLCON

In the new process, a special odour neutralising substance is

injected chemicals effectively surround the odour-forming substances and thus neutralise the unpleasant odour.

The systems metering station comprises a PLC for control and regulation of the pump, the metering programs for tank monitoring and remote control. In addition to the stainless metering station components, the system also includes an injection unit and a suction lance for the chemicals tank.
The metering station can be synchronised with the production plant and is activated and deactivated by remote control via a control signal. Metering of the chemicals for the odour neutralization is employed only for processes with odour problems, i.e. metering can be activated and deactivated as and when required during the production process.

The station is operated with a 220V electric power supply and requires an approximate 4 bar compressed air supply.

The chemical OLCON is also supplied by Koenig as a concentrate and can be employed directly from the supplied chemicals tank without prior dilution. The injected volumes are very low and average 0.1 to 0.5 l/h. The injected volume is dependent on the exhaust air volume and on the odour intensity.

OLCON is not hazardous according to the definition in the European Directive 88/379 CEE. No special measures, therefore, have to be taken for handling and storage.

The metering station, weighing approximately 15 kg, is designed for wall mounting and should be installed within 10 m of the injection point. The chemicals tank can be positioned under the metering unit. The OLCON is pumped via the metering line to the injection unit where it is sprayed.

The process can be employed to treat the exhaust air of a large number of textile finishing processes, for example, singeing (cotton, wool, synthetics and their blends), drying, fixing, coating, etc. The innovative 'odour-free' system can be fitted for use with any make of stenter or drier.
The benefits of this process are the low investment costs for the metering station and injection unit, and minimal installation work. There is no additional water consumption and no disposal costs are incurred.

The odour neutalisation is recommended when the odour agents in the exhaust air do not exceed the specified limits. If the limits are exceeded, the process can be combined with an exhaust air scrubber.

It can also be retrofitted on an existing Koeing exhaust air scrubber and on the scrubbers of other manufacturers