Patent ID: 6042263
Filing Date: 2000-03-28
Classification: B01F,F23D

Abstract:
A mixed phase flow diffuser for a flow stream conduit having an interior wall, and an axis disposed at the cross-sectional geometric center of the conduit, the diffuser comprising:a body having a central open area and including:a peripheral edge disposed coincident with the interior wall;a leading edge extending inwardly from the interior wall, the leading edge defining a first impact surface and a second impact surface, the first impact surface being a ring disposed perpendicular to a direction of flow and having a first radial thickness, wherein entrained solids flowing near the interior wall and impacting the first impact surface are forced radially away from the interior wall where the solids are entrained in a bulk carrier, the second impact surface being a plurality of circumferentially spaced blocks disposed perpendicular to the direction of flow and having a second radial thickness extending radially inward from the ring, wherein entrained solids impacting the second impact surface are deflected between adjacent blocks in a circumferential direction and are deflected over the blocks in a radially inward direction where the solids are entrained in the bulk carrier;a following edge extending inwardly from the interior wall and being spaced from the leading edge to define a body width, the following edge being substantially identical in shape and size to the leading edge, wherein secondary turbulent eddies are formed around the following edge when a flow stream of the solids entrained in the bulk carrier flows past the following edge;a first restricted surface disposed inward from the interior wall and parallel to the axis at the first radial thickness, the first restricted surface extending across the width of the body and interconnecting the leading and following edges;a second restricted surface disposed inward from the first restricted surface and parallel to the axis at the second radial thickness, the second restricted surface extending across the width of the body and interconnecting the leading and following edges; anda third restricted surface extending radially inward between the first and second restricted surfaces and across the width of the body and interconnecting the leading and following edges.