Patent ID: 7258844
Filing Date: 2007-08-21
Classification: B01J,F28F

Abstract:
1. A stacked assembly of plates comprising a first portion of the length of the assembly being formed of a plurality of first perforated plates, wherein each first plate is perforated to define a central open region enclosed by an inner annulus and limbs which extend from the outer diameter of the inner annulus to the inner diameter of an outer peripheral annulus, said central open region of each first plate defining a central passageway section for a first fluid inside the inner annulus and a plurality of generally arcuate outer passageway sections for a second fluid defined between the inner and outer annulus and the limbs and, at one end of the first portion, a second portion of the length of the assembly being formed of a plurality of second perforated plates each featuring a central passageway section and generally arcuate outer passageway sections corresponding to the central passageway sections and generally arcuate outer passageway sections of the first plates, the plates of each portion assembling in a stack to provide a continuous central passageway defined by the central passageway sections and continuous generally arcuate outer passageways defined by the generally arcuate outer passageway sections, the generally arcuate outer passageways being connected to an inlet and an outlet for the second fluid and each second plate having an outer peripheral annulus that has one or more discontinuities to provide the inlet or the outlet for the generally arcuate outer passageways for the second fluid and the central passageway being connected to an inlet and outlet for the first fluid.