Installation for implementing a method for producing paper...

Details Installation for implementing a method for producing paper... Installation for implementing a method for producing paper...

D - Textiles, Paper

21

C

D21C 3/20 (2006.01) D21C 3/04 (2006.01)

Patent

CA 2606543

The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means (18, 20) for transferring the raw material (MP) successively to a first treatment station (PT1) and a second treatment station (PT2), each comprising means (G1, G2) for temporarily combining, at the first station (PT1), the raw material (MP) with a quantity of a first mixture of organic acids and, at the second station (PT2), for temporarily combining the raw material (MP) with a quantity of a second mixture; and means, after impregnation, for at least partially recovering the quantity of second mixture after impregnation and for recycling at least a portion of the second recovered mixture to form at least partially said first impregnation mixture used at the first station (PT1).

L'invention concerne une installation (10) dans laquelle l'imprégnation et le fractionnement de la matière première (MP) sont réalisées à pression atmosphérique. Cette installation est caractérisée en ce qu'elle comprend un moyen (18, 20) permettant de transférer la matière première (MP) successivement vers une première station de traitement (PT1) et vers une seconde station de traitement (PT2), chaque station comprenant un moyen (G1, G2) qui combine provisoirement, dans la première station (PT1), la matière première (MP) avec une certaine quantité d'un premier mélange d'acides organiques et qui, dans la seconde station (PT2), combine provisoirement la matière première (MP) avec une certaine quantité d'un second mélange ; et un moyen permettant de récupérer au moins partiellement la quantité du second mélange après l'imprégnation et de recycler au moins une partie du second mélange récupéré pour former au moins partiellement ce premier mélange d'imprégnation utilisé dans la première station (PT1).

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