Low wet pressure drop limiting orifice drying medium and...

Details Low wet pressure drop limiting orifice drying medium and... Low wet pressure drop limiting orifice drying medium and...

D - Textiles, Paper

21

F

D21F 5/18 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2303963

An apparatus for drying a cellulosic fibrous structure. The apparatus comprises a micropore medium having pores therethrough. The pores are the limiting orifice in the air flow used in the drying process. The micropore medium has a relatively low wet pressure drop therethrough. This relatively low wet pressure drop advantageously reduces the energy costs used in drying, and/or allows for greater drying to be obtained at constant energy costs.

L'invention concerne un dispositif de séchage d'une structure fibreuse cellulosique. Le dispositif comprend un élément microporeux présentant des pores qui le traversent. Les pores constituent l'orifice régulateur dans l'écoulement d'air utilisé dans le processus de séchage. L'élément microporeux est caractérisé par une chute de pression humide relativement faible ce qui permet de réduire de manière avantageuse les coûts énergétiques utilisés lors du séchage et/ou permet d'assurer un séchage plus important à des coûts énergétiques constants.

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