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1. CA2736778 - METHOD AND APPARATUS FOR DISTURBING NETWORKED PULP

Office
Canada
Application Number 2736778
Application Date 04.09.2009
Publication Number 2736778
Publication Date 25.03.2010
Grant Number
Grant Date 06.12.2016
Publication Kind C
IPC
B01D 21/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
02Settling tanks
04with moving scrapers
B01D 21/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
02Settling tanks
B01D 21/06
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
02Settling tanks
04with moving scrapers
06with rotating scrapers
B01D 21/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
18Construction of the scrapers or the driving mechanisms for settling tanks
B01D 21/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
18Construction of the scrapers or the driving mechanisms for settling tanks
20Driving mechanisms
CPC
B01D 21/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
18Construction of the scrapers or the driving mechanisms for settling tanks
B01D 21/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
18Construction of the scrapers or the driving mechanisms for settling tanks
20Driving mechanisms
B01D 21/283
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
28Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
283Settling tanks provided with vibrators
B01D 21/2427
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
24Feed or discharge mechanisms for settling tanks
2427The feed or discharge opening located at a distant position from the side walls
B01D 21/34
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
30Control equipment
34Controlling the feed distribution; Controlling the liquid level ; ; Control of process parameters
B01D 21/28
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
28Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
Applicants OUTOTEC OYJ
Inventors ARBUTHNOT, IAN
TRIGLAVCANIN, RICHARD
LE, LOC THANH
Title
(EN) METHOD AND APPARATUS FOR DISTURBING NETWORKED PULP
(FR) PROCEDE ET APPAREIL POUR LA PERTURBATION DE PATE ENTRELACEE
Abstract
(EN) The present invention provides a method (20) of separating pulp from a feed material within a tank (1), the method comprising the steps of (23) introducing the feed material (22) into the tank (1); (24) allowing the feed material (22) to settle in the tank (1); (25) allowing the pulp (21) to form into aggregates (13); (26) allowing the pulp aggregates (13) to settle towards the bottom of the tank (1) and form a networked layer (2) of pulp; and (27) causing a disturbance substantially uniformly across a disturbancezone (16) in an upper region of the networked layer (2), so as to disrupt the networked pulp in the disturbance zone within a predetermined period of time; thereby releasing entrained liquid from the networked pulp in the disturbance zone (16) and increasing the relative density of the pulp below the disturbance zone. The invention also provides a separation device (40) for separatingpulp (21) from a feed material (22).
(FR) La présente invention porte sur un procédé (20) de séparation de pâte à partir d'une matière d'alimentation à l'intérieur d'une cuve (1), le procédé consiste à (23) introduire la matière d'alimentation (22) dans la cuve (1) ; (24) laisser la matière d'alimentation (22) décanter dans la cuve (1) ; (25) laisser la pâte (21) se mettre sous forme d'agrégats (13) ; (26) laisser les agrégats de pâte (13) décanter vers le fond de la cuve (1) et former une couche entrelacée (2) de pâte ; et (27) provoquer une perturbation pratiquement uniformément sur une zone de perturbation (16) dans une région supérieure de la couche entrelacée (2), de façon à déranger la pâte entrelacée dans la zone de perturbation sur une durée prédéfinie, ce qui libère de cette manière le liquide entraîné de la pâte entrelacée dans la zone de perturbation (16) et augmente la densité relative de la pâte au-dessous de la zone de perturbation. L'invention porte également sur un dispositif de séparation (40) pour la séparation de pâte (21) à partir d'une matière d'alimentation (22).