Screen for collection and distribution of process streams

Details Screen for collection and distribution of process streams Screen for collection and distribution of process streams

B - Operations, Transporting

01

J

23/434

B01J 8/00 (2006.01)

Patent

CA 1162386

"IMPROVED SCREEN FOR COLLECTION AND DISTRIBUTION OF PROCESS STREAMS" ABSTRACT Screen for use in collecting and/or distributing process flow streams has profiled surface wires welded to channel-shaped support members and is preferably made by helically wrapping and welding a profiled sur- face wire around the elongated channel members which are rotated about the : screen axis to produce a cylindrical slotted screen which is then cut along a line parallel to its axis, flattened, and either used flat or re- rolled and welded at right angles to its original direction so that the channels form hoop-like supports. The channels are preferably apertured to such an extent that the total open area for an inlet stream flow on the channel side of the screen is less than the open area of the slots on the wire side of the screen. Thus, the pressure drop through the screen is controlled by the apertures in the channels with the result that the screen surface can be provided with slot widths of optimum size relative to the particle size of material to be contacted thereby.

376260

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