Method in the drying of a paper web or equivalent

Details Method in the drying of a paper web or equivalent Method in the drying of a paper web or equivalent

F - Mech Eng,Light,Heat,Weapons

26

B

309/88

F26B 7/00 (2006.01)

Patent

CA 1287092

ABSTRACT OF THE DISCLOSURE Method for contact-free drying of a paper or board web. Both infrared radiation and drying air jets are used for drying, by means of which said air jets the web passing through the dryer is, at the same time. supported free of contact. The web is passed first into an infrared drying gap or gaps and thereupon into an airborne web-drying gap. The infrared radiators in the infrared drying unit or units are cooled by means of air cur- rents. In the method, before the airborne dryer, an in such a way closed infrared drying unit or units is are used whose cool- ing air is not, to a significant extent, passed into the infrared drying gap. The dry cooling air heated in the infrared drying unit or units is passed through the nozzles of the airborne dryer following after the infrared dryer so as to constitute drying and/or airborne air blowings in its drying gap.

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