Patent ID: 6077436
Filing Date: 2000-06-20
Classification: B01D,C01B

Abstract:
A device for altering a feed stock, the device comprising a structure for passage of a feed stock therethrough to produce an altered feedstock, the structure being selected from the group consisting of an extruded unibody structure, and a nested structure, the structure comprising an interior and an exterior section, and a longitudinal axis, and walls defining two sets of open-ended passages which extend along the longitudinal axis, the device having means for isolating one set of passages from the feed stock, all the passages being slot-like in cross section, said two sets of passages having cross sectional aspect ratios that are different with respect to each other the passages with the larger cross sectional aspect ratio being closer to the exterior of the structure than the passages with the smaller cross sectional aspect ratio, the passages with the larger cross sectional aspect ratio being manifolded by notches cut into the sides of the structure, and having plugs at both ends, each passage of one set lying immediately adjacent to at least one passage of the other set or to the exterior of the structure, one set of passages for receiving and altering a feedstock, which thereafter passes out of the walls of said one set of passages, and the other set of passages for receiving and discharging the resulting altered feedstock, wherein when the structure is a nested structure, at least some of the passages have a cross section in the shape of truncated arcs.