Process arrangement for short circulation

Details Process arrangement for short circulation Process arrangement for short circulation

D - Textiles, Paper

21

F

D21F 1/00 (2006.01) D21F 1/08 (2006.01) D21F 1/66 (2006.01)

Patent

CA 2357778

The invention concerns the short circulation of a paper or board machine and in particular a simplified process arrangement for the short circulation, which arrangement comprises a metering system (20) for the stock (M) or stocks, pumps (110, 130, 170), a headbox (150), and a wire part (160) as well as a pipe system interconnecting the devices, with means of regulation, and in which arrangement a high-consistency stock (3) is fed into the headbox (150), and the white water (4) recovered from the wire part (160) is fed by means of a diluting pump (170) into the headbox (150) so that diluting of the stock suspension is carried out in the headbox.

Cette invention se rapporte à la circulation rapide dans une machine de fabrication de papier ou de carton, et concerne notamment un système de traitement simplifié pour circulation rapide. Ce système de traitement comprend un système de mesure (20) du ou des mélanges de départ (M), des pompes (110, 130, 170), une bâche d'alimentation (150), une partie table plate (160) ainsi qu'un système de tuyaux reliant les dispositifs et comportant des systèmes de régulation. Dans ce système de traitement, un mélange de départ d'une consistance élevée (3) est introduit dans la bâche d'alimentation (150), tandis que les eaux blanches (4) récupérées de la partie table plate (160) sont introduites par une pompe à dilution (170) dans la bâche d'alimentation (150) de sorte que la dilution du mélange de départ s'effectue dans ladite bâche.

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