D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 7/06 (2006.01)
Patent
CA 2317750
A feeding system for feeding comminuted cellulose containing material and liquid to a continuously operating treatment vessel, which feeding sytem comprises a chute (2), operating at a first pressure level, with a liquid level and a level of material, a high pressure feeder (3) which, by means of rotating pockets, sluices (6) the material, together with all or a part of said liq-uid, to a second pressure level, which is higher than said first pressure level, for further conveyance to said treatment vessel, which high pressure feeder (3) also receives a return liquid flow (5), from said treatment vessel, at said second pressure level and recirculates a recirculation flow (4', 4") to said chute (2) or to said high pressure feeder (3). Said high pressure feeder (3) is, according to the invention, in open connection, with respect to both said liquid, and said comminuted cellulose containing material, with said recirculation flow (4', 4"), when any of the pockets of the high pressure feeder (3) is in a location which corresponds to an outlet (3b) for said recirculation flow (4', 4").
Ce système alimentant une cuve de traitement fonctionnant en continu en matériau fragmenté contenant de la cellulose ainsi qu'en liquide, comporte une goulotte (2) fonctionnant sous une première pression, avec des niveaux donnés de liquide et de matériau, un alimentateur sous haute pression (3) qui, par le biais de magasins doseurs rotatifs, dirige (6) le matériau, avec tout le liquide ou une partie de celui-ci, vers un second niveau de pression, supérieur au premier, en vue d'un transfert ultérieur vers la cuve de traitement. Cet alimentateur haute pression (3) reçoit également un flux liquide de retour (5) provenant de la cuve de traitement, au second niveau de pression, et recycle un flux de recyclage (4', 4'') vers la goulotte (2). L'alimentateur haute pression (3) est en connexion ouverte, pour ce qui est du liquide et du matériau contenant de la cellulose, avec le flux de recyclage (4', 4'') lorsque l'un de ses magasins doseurs se trouve dans une position correspondant à un orifice d'évacuation (3b) du flux de recyclage (4', 4'').
Gustavsson Lennart
Nystrom Per
Snekkenes Vidar
Svanegard Bo
Fetherstonhaugh & Co.
Kvaerner Pulping Ab
Metso Paper Sweden Aktiebolag
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