Other

Knaack Manufacturing Company

Richmond Bank

William C Nowack

Kenneth F Weger, Jr

Stephen J Moore

Philip Leroy Carter

Paul Jeffrey Flynn

Pyrolysis methods for disassociating an organic mass, or coating from an article, by placing the article in an air tight processing chamber, circulating a gaseous mixture of ambient air and at least 40% water vapor from an opening, through the processing chamber and out of an exhaust port, and maintaining the processing chamber at a temperature above 650 degrees Fahrenheit for a sufficient time to disassociate the organic material. A batch oven and a continuous processing oven including entrance and exit air closures that utilize the pyrolysis methods are described.

Pyrolysis methods and ovens therefor

A painting system includes a paint spray booth ventilated by process air including a combination of outside make-up air and a portion of the exiting process air which is returned to the booth, the returned air being the main component of the combination. The humidity of the air in the paint spray booth is controlled by routing a first minor portion of the process air, exiting the booth, through a desiccant dehumidifier, which removes moisture and volatile organic compounds (VOCs) from this process air portion before it is sent back to the paint spray booth. The dehumidifier is designed so that at any given time the process air portion contacts only part of the desiccant bed while air heated to approximately 250.degree. F. in a paint cure oven is exhausted from the oven and directed through the remaining part of the desiccant bed in order to dry, and thus regenerate, the desiccant for continued use. The dehumidifier is designed so that a continual exchange of dried desiccant for moisture laden desiccant respectively takes place relative to the process and heated air streams. The heated air also removes a large portion of the volatile organic compounds removed from the first minor portion of the process air. A second minor portion of the process air exiting from the paint spray booth, equal to the volume of make-up air, and the heated regenerative air exiting the dehumidifier are routed through a control device, such as a thermal oxidizer, which destroys the volatile organic compounds contained in this air before exhausting it to the atmosphere.

Painting system using desiccant dehumidifier for conditioning and

An industrial oven for heat treating a series of articles by transporting the articles through a heated tunnel in an enclosure, the enclosure having air barrier closures at the entrance and exit of the tunnel, the air barrier closure at the entrance of the tunnel having a blower with an inlet for receiving a gaseous medium and a nozzle for expelling the gaseous medium in a flow and directing the medium flow across the tunnel, the blower having a heater adapted to raise the temperature of the gaseous medium expelled through the nozzle above the temperature within the tunnel, the enclosure also having an exhaust port between the air barrier closures and an exhaust blower for removing a portion of the gaseous medium from within the tunnel and reducing the pressure of the gaseous medium within the tunnel to a pressure below that of the ambient atmosphere. Also the method of heat treating process articles in such an oven in which the gaseous medium of the air barrier closure at the entrance of the oven is heated to a temperature above that of the oven. Also the method of heat treating process articles in such an oven in which the gaseous medium of the air barrier closure at the entrance of the oven is provided with moisture, and further the method of curing process articles coated with powdered paint in an oven provided with an air barrier closure at the entrance to the oven in which the gasses in the closure are heated to a temperature above that of the oven and provided with moisture.

Method of heat treating articles and oven therefor

A paint spray booth with a filter and means within the spray booth to incinerate paint from the filter. A filter particularly adapted for collecting paint overspray in a paint spray booth. The filter has a plurality of members with a first portion parallel to the path of the air and paint particle flow which is to be filtered, each of the members having a second portion extending normally in a first direction from the downstream side of the first portion. The second portions of the members are spaced from each other and form openings therebetween on a plane normal to the flow of air and paint particles. Each of the members has a third portion extending from the other side of first portion and in the opposite direction from the second portion, and the third portions of the members form slots between members with areas less than the area of the downstream openings. Each of the members also having a fourth member extending perpendicularly from the end of the second member opposite the first member toward the third member, and a fifth member extending perpendicularly from the end of the third member opposite the first member and away from the first member.

Paint spray booth and filter therefor

In a series of insulated panel members an interlocking labyrinth seal is provided to minimize the heat loss, the seal having a pair of first slots for receiving a U-shaped clip, a pair of second slots for receiving an offset spacer, and a plurality of right angle flanges for locking the offset spacer into the second slots. Insulated panel members are placed in end-to-end relationship and locked together when the U-shaped clip is inserted into the first slots and retained in position by an undercut slot. Heat loss through the seal is minimized because slots in the spacers expose insulation material into the area where the heat loss can occur.

Interlocking seal for insulated panels

An industrial painting method and system utilizing a washer, dry-off oven, spray booth, and bake oven, in which solvent paint vapors from the spray booth are concentrated in a filter which is subsequently degassed by a flow of hot air from the dry-off oven, and the degassed vapors admixed with the atmosphere of the bake oven. The bake oven atmosphere is continuously circulated to the washer and burned in the burner of the washer to incinerate solvent vapors, and the gasses produced by incineration are transported to the dry-off oven to form the atmosphere thereof. The principal exhaust from the system occurs from the dry-off oven and is substantially free of solvent vapors and of low temperature.

Method for the removal and disposal of paint solvent

An industrial oven in which articles to be heat treated are carried by a conveyor through a heated tunnel space in a tunnel structure which has end walls with access openings, such oven comprising a nozzle directed downwardly into the tunnel space at an inclined angle across at least one access opening, an exhaust opening communicating with the tunnel space in the vicinity of the upper portion of such access opening, and air handling means for withdrawing hot air from the tunnel space through said exhaust opening while blowing hot air into the tunnel space through said nozzle for minimizing the escape of hot air through such access opening. The air handling means may take the form of a recirculating blower connected between the exhaust opening and the nozzle. The oven may have an air heating and recirculating system which withdraws air from the tunnel space. Instead of providing a separate recirculating blower, exhaust and supply ducts may be connected to the intake and discharge sides of such system and may extend to the exhaust opening and the nozzle to circulate hot air out of the tunnel space through the exhaust opening and into the tunnel space through the nozzle.

Growing community of inventors

Twin Lakes, WI, United States of America

William C Nowack