With the Deco pulse, Metall + Plastic presented a new, innovative system to introduce H2O2 into isolators at the Achema show with the advantage of a decontamination cycle that is 50 % shorter. And, due to the reduced utilisation of H2O2, there is less strain on the material, substances and product.
H2O2 is atomised through specific Deco pulse injection nozzles, producing a very fine spray. The nozzles have two channels on the inside to atomise the H2O2 with compressed air as a carrier gas directly inside the isolator. The company states that the relatively high inside pressure in very small droplets makes them evaporate very fast. Approximately 90 per cent of the Deco pulse droplets have a cross section of less than 1.5 micrometers and therefore, will evaporate several centimeters from the nozzle.
The opening and closing of the valve for the liquid H2O2 is defined in quick and exact intervals, for example 100 milliseconds, that create a pulsing effect. According to the firm, this allows a very fine dosing of the introduced H2O2 amount. Due to the continuous supply of the nozzles with compressed air, turbulences prevail in the isolator. These turbulences ensure an excellent distribution of the released gaseous H2O2. Due to the excellent distribution of H2O2, the Deco pulse only requires a few injection nozzles (and piping).
Techniques at their Best
Besides the fine dosing, an additional benefit of the Deco pulse is that no H2O2 will be lost to decomposition, since no additional heating is required for the evaporation of the droplets. In addition, the system offers a higher injection rate per nozzle than common evaporation systems, adds the firm. Consequently, a faster H2O2 concentration and hence, a faster elimination of microorganisms is achieved. Subsequently less H2O2 has to be used for a complete bio-decontamination process, leading to a much shorter decontamination cycle.