Patent ID: 7622018
Filing Date: 2009-11-24
Classification: D21B,D21C

Abstract:
1. An arrangement for treating pulp, said arrangement comprising a high-consistency pulp tower ( 10 ) having an upstanding tower wall ( 12 ), a bottom ( 22 ), and a stationary parting member ( 31 , 31 ″) arranged in the tower, said parting member dividing the tower to an upper part and a bottom part ( 20 ), said bottom part defining a so-called dilution zone of said tower ( 10 ), at least one agitator ( 40 ) arranged in the bottom part ( 20 ) for diluting high-consistency pulp, discharge means ( 60 ) for diluted pulp arranged in the bottom part ( 20 ), and said parting member ( 31 , 31 ″) and said wall ( 12 ) of the tower ( 10 ) defining a first cross-sectional flow area, which is smaller than a corresponding cross-sectional flow area below the parting member ( 31 , 31 ″), wherein the arrangement additionally includes means ( 36 , 42 ; 38 , 39 ; 46 ; 48 ) for diluting pulp arranged at a distance from said wall ( 12 ) between said parting member ( 31 , 31 ″) and said wall ( 12 ) of said tower ( 10 ) substantially at the level of said first cross-sectional flow area.