Method and device for ozone-free separation of components in the corona discharge zone

A device comprising:

• a chamber having a first end and a second end opposite the first end,
• a first outlet and a second outlet,
• at least one ionizing electrode supported within the second outlet and having a tip,
• at least one non-ionizing electrode inside the chamber,
• a high voltage generator coupled to said electrodes so as to generate between the electrodes a corona discharge zone having a plasma area wherein ozone is formed and a dark area where predominantly hydrogen peroxide is formed, the first outlet being fluidly coupled to the dark area,
• an air inlet formed in the first end of said chamber for conveying an air flow through the corona discharge zone,
• a suction device coupled to the second outlet for generating negative pressure gradient to the plasma area, and
• the suction device having an outlet through which ozone is discharged and prevented from escaping into an enclosed atmosphere;
• characterized in that:
• the first outlet and the second outlet are formed in the second end of the chamber,
• the second outlet is a hollow air-channel mounted in spatial relationship with the chamber and is dimensioned to cover the whole area of the plasma area,
• the at least one ionizing electrode is supported by a non-ionizing part at the upper end of the chamber in axial alignment with the hollow air-channel so that said ionizing electrode tip protrudes out of an open lower end of the hollow air-channel into the chamber,
• an internal wall of the chamber serves as the non-ionizing electrode whereby the corona discharge zone extends from the tip of the at least one ionizing electrode to the internal wall of the chamber, and
• the high voltage generator is configured to apply a unipolar negative or positive corona discharge between the at least one ionizing electrode and the non-ionizing electrode.