Angle rod screen design

Abstract

A screen for use in distributing a fluid in a process flow system. The screen provides support, and provides for the ability to clean particulates from the screen. The screen includes profiled wires affixed to a support, where the support provides channels to distribute the fluid over the screen. The support includes spacing to improve the cleaning of particulates from the screen.

1 . A screen assembly for collecting and distributing a process flow stream comprising:
 a plurality of wires spaced apart in a substantially parallel orientation and fixedly mounted to a support relative to each other and forming screen, wherein the spaces define slots between neighboring wires for the passage of a fluid; and   a plurality of angled rods, having a generally L shaped configuration, with a first edge at one end of the L shape and a second edge at the other end of the L shape, where the first edge is affixed to the plurality of wires in a substantially perpendicular orientation relative to the wires and providing the support, and the angled rods form a partially covered channel on one side of the screen with the second edge of the angled rods spaced apart from a neighboring angled rod to form a channel gap, and where the channel gap is greater than the slots between neighboring wires.   
   
   
       2 . The screen assembly of  claim 1 , wherein an angled road is periodically attached to a neighboring angled road. 
   
   
       3 . The screen assembly of  claim 1 , wherein the wires are profiled wires and have a substantially flat side opposite the side to which the wires are affixed to a support. 
   
   
       4 . The screen assembly of  claim 1 , wherein the total open area of the channel gaps is greater than the total open area of the slots between the wires. 
   
   
       5 . The screen assembly of  claim 1 , wherein the spacing between the second edge and the neighboring angled rod is at least equal to the spacing between neighboring wires. 
   
   
       6 . The screen assembly of  claim 1 , wherein the spacing between neighboring wires is less than 0.5 times the size of catalyst particles to be used in a reactor containing the screen assembly. 
   
   
       7 . The screen assembly of  claim 1 , wherein the assembly is cylindrical in shape and the wires are oriented to be substantially parallel to the axis of the cylinder. 
   
   
       8 . The screen assembly of  claim 7 , wherein the wires are on the inside of the cylinder and the angled rods are on the outside of the cylinder. 
   
   
       9 . The screen assembly of  claim 7 , wherein the wires are on the outside of the cylinder and the angled rods are on the inside of the cylinder. 
   
   
       10 . The screen assembly of  claim 1 , wherein the assembly is shaped like a scallop and the wires are oriented to be substantially parallel to the axis of the scallop. 
   
   
       11 . The screen assembly of  claim 1 , wherein the assembly is shaped like an optimizer scallop and the wires are oriented to be substantially parallel to the axis of the optimizer scallop.