Patent ID: 7871193
Filing Date: 2011-01-18
Classification: B01F

Abstract:
1. A device comprising at least a housing ( 1 ), at least two rotating agitators ( 2 ) and ( 3 ), wherein at least one of the agitators ( 2 ) is a helical or anchor agitator arranged centrally in the housing ( 1 ), and at least one of the other agitators ( 3 ) is an eccentrically arranged screw or blade agitator, and wherein the pitches, the rotary speeds and the outer diameters of the agitators satisfy the following mathematical relationship (I): where n 1 and n 2 are the rotary speeds, D 1 and D 2 are the outer diameters and S 1 and S 2 are the pitches, respectively, of the at least one central and eccentric agitator.