A multiport rotary valve is described providing the interconnection of a plurality of conduits with a predetermined cycle. The valve uses a stack of plates defining channels and ports to form the fluid circuits.
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What is claimed is: 1. A rotary valve assembly for use in an apparatus for adsorption separation with multiple adsorption units and net flow lines comprising: a first rotary plate having a first smooth surface for a sealing contact with a matching stationary surface, a second surface opposite the f
What is claimed is: 1. A rotary valve assembly for use in an apparatus for adsorption separation with multiple adsorption units and net flow lines comprising: a first rotary plate having a first smooth surface for a sealing contact with a matching stationary surface, a second surface opposite the first surface, an inlet port for fluid communication with each adsorption unit inlet, an outlet port for fluid communication with each adsorption unit outlet, and a plurality of secondary ports equal to the number of adsorption unit inlets and outlets, where the ports extend through the first rotary plate; a second rotary plate having a first surface for a sealing contact with the second surface of the first rotary plate, a second surface opposite the first surface, and defining a plurality of channels where each channel creates fluid communication between a secondary port of the first rotary plate and a port selected from the inlet ports and the outlet ports of the first rotary plate; a first stationary plate having a first surface, a port for each adsorption unit inlet, a port for each adsorption unit outlet, and a port for each net flow line, where the ports extend through the first stationary plate; a second stationary plate having a first surface for a sealing contact with the first surface of the first stationary plate, a second surface opposite the first surface, a port in fluid communication with each adsorption unit inlet, a port in fluid communication with each adsorption unit outlet, a port in fluid communication with one net flow inlet, a port in fluid communication with one net flow outlet, and the second stationary plate defining a plurality of channels equal to one less than the number of adsorption units, where the ports extend through the second stationary plate; and a third stationary plate having a first surface for a sealing contact with the second surface of the second stationary plate, a second surface opposite the first surface and having a smooth face providing the matching stationary surface in contact with the first surface of the first rotary plate, a port in fluid communication with each adsorption unit inlet, a port in fluid communication with each adsorption unit outlet, and a plurality of secondary ports in fluid communication with the secondary ports of the first rotary plate. 2. The rotary valve assembly of claim 1 wherein the second rotary plate is comprised of two plates with the first plate having a first surface for a sealing contact with the second surface of the first rotary plate, a second surface opposite the first surface, and defining a plurality of channels where each channel creates fluid communication between a secondary port of the first rotary plate and a port selected from the an inlet ports and the outlet ports of the first rotary plate, and a second plate having a first surface for a sealing contact with the second surface of the first plate and providing a cover for the plurality of channels defined in the first plate. 3. The rotary valve assembly of claim 1 wherein the first rotary plate sealing surface is coated with a lubricious polymeric material. 4. The rotary valve assembly of claim 1 wherein the third stationary plate matching surface is coated with a lubricious polymeric material. 5. The rotary valve assembly of claim 1 wherein the third stationary plate has lubrication channels defined in the matching surface. 6. The rotary valve assembly of claim 1 wherein the first rotary plate has lubrication channels defined in the sealing surface. 7. The rotary valve assembly of claim 1 wherein the first rotary plate has smear channels defined in the sealing surface. 8. The rotary valve assembly of claim 1 wherein the third stationary plate has smear channels defined in the matching surface. 9. A rotary valve assembly for use with a multiunit adsorption separation device with each unit having an inlet and an outlet, comprising: a stationary plate assembly having a plate with a smooth seating surface, and an inlet port in fluid communication with each adsorption unit inlet, an outlet port in fluid communication with each adsorption unit outlet, a netflow port in fluid communication with each net flow line, a plurality of secondary ports equal to the number of adsorption unit inlet ports and adsorption unit outlet ports, and a number of conduits equal to one less than the number of adsorption units for connecting pairs of secondary ports; and a rotary plate assembly having a smooth sealing surface for a sealing contact with the stationary plate seating surface, a plurality of primary ports having a one to one correspondence with the stationary plate inlet ports and stationary plate outlet ports, a plurality of secondary ports equal to the number of primary ports, and a plurality of conduits for connecting each primary port with a secondary port. 10. The rotary valve assembly of claim 9 wherein the stationary plate assembly comprises: a connection plate having an inlet port in fluid communication with each adsorption unit inlet, an outlet port in fluid communication with each adsorption unit outlet, and a port in fluid communication with each net flow line, where each port extends through the connection plate; and a contact plate having a first side contacting the connection plate, a second side having a smooth seating surface, a plurality of primary ports with each primary port in fluid communication with either a connection plate inlet port or outlet port, a plurality of secondary ports equal in number to the primary ports, and a plurality of channels defined on the first side of the contact plate, equal to one less than the number of adsorption units and forming fluid connections between pairs of secondary ports, and with two secondary ports in fluid communication with net flow lines, where the ports extend through the contact plate. 11. The rotary valve assembly of claim 9 wherein the stationary plate assembly comprises: a contact plate having a first surface, a second surface opposite the first surface, an inlet port in fluid communication with each adsorption unit inlet, an outlet port in fluid communication with each adsorption unit outlet, and a port in fluid communication with each net flow line, wherein each port extends through the contact plate; a channel plate having a first surface in sealing contact with the contact plate second surface, a second surface, a primary port in fluid communication with each contact plate inlet port and outlet port, a plurality of secondary flow ports equal to the number of inlet ports and outlet ports where at least two of the secondary flow ports are net flow ports with each net flow port in fluid communication with each contact plate net flow port, and a plurality of channels equal to one less than the number of adsorption units and defined in the channel plate, where each channel connects two secondary ports, and where each port extends though the channel plate; and a contact plate having a first surface in sealing contact with the channel plate second surface, a second surface having a smooth seating surface, a plurality of primary ports in fluid communication with the channel plate primary ports, and a plurality of secondary ports in fluid communication with the channel plate secondary ports. 12. The rotary valve assembly of claim 9 wherein the rotary plate assembly comprises: an interface plate having a smooth sealing surface for a sealing contact with the stationary plate seating surface, a second surface opposite the sealing surface, a plurality of primary ports having a one to one correspondence with the stationary plate inlet ports and stationary outlet ports, and a plurality of secondary ports equal to the number of primary ports; and a channel plate having a first side for a sealing contact with the interface plate second side, and defining a plurality of channels in the channel plate where each channel provides fluid communication between a primary port and a secondary port. 13. The rotary valve assembly of claim 9 wherein the rotary plate assembly comprises: an interface plate having a smooth sealing surface for a sealing contact with the stationary plate seating surface, a second surface opposite the sealing surface, a plurality of primary ports having a one to one correspondence with the stationary plate inlet ports and stationary outlet ports, and a plurality of secondary ports equal to the number of primary ports; a channel plate having a first side for a sealing contact with the interface plate second side and a second side opposite the first side, and defining a plurality of channels in the channel plate where each channel provides fluid communication between a primary port and a secondary port; and a sealing plate having a first side for a sealing contact with the channel plate second side. 14. The rotary valve assembly of claim 9 wherein the stationary plate has lubrication channels defined in the seating surface. 15. The rotary valve assembly of claim 9 wherein the rotary plate has lubrication channels defined in the sealing surface. 16. The rotary valve assembly of claim 9 wherein the stationary plate is coated with a lubricious polymeric material. 17. The rotary valve assembly of claim 9 wherein the rotary plate is coated with a lubricious polymeric material. 18. The rotary valve assembly of claim 9 wherein the stationary plate has smear channels defined in the seating surface. 19. The rotary valve assembly of claim 9 wherein the rotary plate has smear channels defined in the sealing surface. 20. The rotary valve of claim 18 wherein the smear channels have an offset portion of the channel.
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