System for deinking pulp with means for guiding bubbles

Details System for deinking pulp with means for guiding bubbles System for deinking pulp with means for guiding bubbles

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21B 1/32 (2006.01) D21F 1/70 (2006.01)

Patent

CA 2469837

The cell includes an enclosure (2) having, at the top, a main inlet (3) for the pulp to be de-inked and, at the bottom, a main outlet (4) for the de-inked pulp. The pulp from the top to the bottom, passes through successive stages (E1, ... En) provided with bubble passageways (13) introduced into the lower portion of the enclosure, and the bubbles rise to the top, to form a foam (5). The cell includes pulp a guiding mechanism (12) forming a guiding path and in which the bubble passageways (13) are provided for. The guiding mechanisms (12) are, on their lower face, inclined upwards in order to guide the bubbles (14) towards the bubble passageways.

La cellule comprend une enceinte (2) comportant en haut une entrée principale (3) pur la pâte à désencrer et en bas une sortie principale (4) pour la pâte désencrée. La pâte se déplace du haut vers le bas en passant par des étages successifs (E1, ... En) pourvus de passages de bulles (13) introduites dans la partie basse de l'enceinte, les bulles montant jusqu'en haut pour former une mousse (5). La cellule comporte des moyens de guidage (12) de la pâte formant un chemin de guidage et dans lesquels les passages de bulles (13) sont prévus, ces moyens de guidage (12) étant sur leur face inférieure inclinés vers le haut pour le guidage des bulles (14) vers les passages de bulles.

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