Procedure and filter device for removal and/or destruction of organic substances in contaminated air

A filter device for removal and/or destruction of organic substances in contaminated air, having a housing and at least one ventilator for sending an air stream through the housing, which filter device comprises:

• a. a first chamber with an opening, which is connected to a source for a contaminated air stream;
• b. a second chamber with a number of sheets placed transversely to the main direction of the air stream for making the air stream change direction at least one time in such a way that solid particles which are entrained in the contaminated air stream are removed;
• c. a third chamber with a number of perforated tubes which, at least at one end, are in open connection with a secondary air source having oxygen which has a lower temperature than the contaminated air stream to thereby cool the air stream, such that water and organic substances in the vapour phase in the contaminated air are condensed and subsequentially removed from the air stream;
• d. a fourth chamber with a number of UV lamps for radiating the air stream with ultra-violet light such that the supplied oxygen forms ozone in situ for oxidizing the organic substances into carbon oxides at a sufficiently low temperature to avoid undesirable reaction byproducts;
• e. a fifth chamber of a volume, which allows the air stream to stay for a predetermined interval of time in the chamber, and which has an opening, through which purified air is released;
• wherein each chamber is connected to the next in succession.

A method for removing and/or destroying organic substances in contaminated air, successively comprising:

• bringing the contaminated air having a plurality of solid particles into a streaming condition for a predetermined interval of time to create a contaminated air stream in a device;
• changing the direction of the contaminated air stream at least one time in a way sufficient to remove solid particles entrained in the contaminated air stream;
• supplying the contaminated air stream with a secondary flow of air and/or oxygen sufficient to impart cooling of the contaminated air stream to condense water and organic substances in the vapor phase to remove them from the air stream;
• irradiating the contaminated air stream within a treatment zone with ultra-violet light such that ozone is created in situ from the supplied secondary flow to oxidize the organic substances into carbon oxides at a sufficiently low temperature to avoid undesirable radiation byproducts, thereby decontaminating the air stream;
• and
• releasing the decontaminated air stream from the device.

A method for removal and/or destruction of organic substances in contaminated air, characterized in that it comprises the following process steps:

• the air is brought into a streaming condition;
• the air stream created is brought to change direction at least one time in such a way that solid particles which are entrained in the contaminated air stream are removed;
• cooler air is supplied to the air stream;
• the air stream is at a temperature such that water and organic substances that are in the vapour phase in the contaminated air stream are condensed and subsequently removed from that stream;
• the air stream is radiated with ultra-violet light after the cooler air is supplied;
• and
• the air stream is subsequently released.

A filter device for removal and/or destruction of organic substances in contaminated air, having a housing and at least one ventilator for sending an air stream through the housing, which filter device comprises:

• a first chamber with an opening, which receives a contaminated air stream and air at a temperature lower than that of the air stream;
• a second chamber with a number of sheets places transversely to the main direction of the air stream for making the air stream change direction at least one time in such a way that solid particles which are entrained in the contaminated air stream are removed;
• an electric evaporator;
• a third chamber with a number of UV lamps for radiating the air stream with ultra-violet light;
• and
• a fourth chamber of a volume, which allows the air stream to stay for an interval of time in the chamber, and which has an opening, through which purified air is released;
• wherein each chamber is connected to the next in succession.

A filter device for removal and/or destruction of organic substances in contaminated air, having a housing and at least one ventilator for sending an air stream through the housing, which filter device comprises:

• a source for supplying oxygen such that the supplied oxygen forms ozone in situ for oxidizing the organic substances into carbon oxides at a sufficiently low temperature to avoid undesirable reaction byproducts;
• a first chamber with an opening, which receives a contaminated air stream and air at a temperature lower than that of the air stream;
• a second chamber with a number of sheets placed transversely to the main direction of the air stream for making the air stream change direction at least one time in such a way that solid particles which are entrained in the contaminated air stream are removed;
• a third chamber with a number of UV lamps for radiating the air stream with ultra-violet light;
• and
• a fourth chamber of a volume, which allows the air stream to stay for an interval of time in the chamber, and which has an opening, through which purified air is released;
• wherein each chamber is connected to the next in succession.

A method for removing and/or destroying organic substances in contaminated air, which comprises:

• bringing the contaminated air having a plurality of solid particles into a streaming condition to create a contaminated air stream in a device;
• changing the direction of the contaminated air stream at least one time in a way sufficient to remove solid particles entrained in the contaminated air stream;
• lowering the temperature of the contaminated air stream by exposure to cooler air;
• irradiating the contaminated air stream within a treatment zone with ultra-violet light irradiation after lowering the temperature;
• and
• releasing the treated air stream from the device.

A method for removal and/or destruction of organic substances in contaminated air, characterized in that it comprises the following successive process steps:

• bringing into a device a contaminated air stream having a plurality of solid particles and moving in a particular direction;
• changing the direction of the contaminated air stream at least one time in a manner sufficient to remove solid particles that are entrained in the contaminated air stream;
• supplying the contaminated air stream at a temperature such that water vapor and gaseous organic substances condense and removing the condensed water and condensed organic substances from the contaminated air stream;
• supplying the contaminated air stream with oxygen or air;
• irradiating the contaminated air stream within a treatment zone that contains ultra-violet light to create ozone from the oxygen to oxidize organic substances into carbon oxides at a temperature that is sufficiently low to avoid undesirable radiation byproducts, thereby decontaminating the air stream;
• and
• releasing the decontaminated air stream from the device.