Multiple bundle fluid separation apparatus

• US 4,670,145 A
• Filed: 07/08/1986
• Issued: 06/02/1987
• Est. Priority Date: 07/08/1986
• Status: Expired due to Term

• Current Assignee: L'Air Liquide SA
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Edwards, Donald W.
• Primary Examiner(s): Spear, Frank
• Application Number:
  US06/883,319
• Time in Patent Office: 329 Days
• Field of Search: 210/321.1, 210/323.2, 210/433.2, 210/450
• US Class Current: 210/321.87
• CPC Class Codes: B01D 2313/06 External membrane module supporting or fixing means
• CPC Class Codes: B01D 53/22 by diffusion manufacturing semi-permeable membranes B01D67/00; form, structure or properties of semi-permeable membranes B01D69/00; material for semi-permeable membranes B01D71/00
• CPC Class Codes: B01D 63/02 Hollow fibre modules
• CPC Class Codes: B01D 63/021 Manufacturing thereof
• CPC Class Codes: B01D 63/043 with separate tube sheets
• CPC Class Codes: Y02A 20/131 Reverse-osmosis

Abstract

A fluid permeator apparatus is disclosed which comprises an outer cylindrical shell having disposed therein a generally concentric outer central tube in communication with a port at one end of the cylindrical shell and a port at the opposite end of the cylindrical shell which is in communication with an inner central tube located within the outer central tube. The outer central tube is perforated so as to render it in communication with the its outer surface. A plurality of permeator hollow fiber bundles having annular cross sections are removably mounted on the outer central tube. The hollow fibers are mounted with their open ends in at least one tubesheet which is in communication with the inner central tube. The cylindrical shell has an additional port for feeding fluid to be separated or removing residue.

Claims

1. A hollow fiber permeator comprising:

A. A casing having the shape of an elongated cylinder closed at both ends with one closure being a removable member;

B. A removable tubular assembly within said casing, comprising a central outer tube the interior of which is in communication with a first port at one end of said casing and with the exterior of said central outer tube, and an inner tube attached within said central outer tube, said inner tube in communication with a second port at the end of said casing opposite the first port;

C. A plurality of bundle assemblies, each comprising an annular cross section bundle of hollow fibers having an end mounted in an annular tubesheet and communicating with an annular chamber, said assemblies each removably mounted on said outer tube;

D. Means for communicating between each said annular chamber and the inner tube recited in B. above;

E. A third port in said casing in communication with the exterior of said bundle assemblies.

2. The permeator of claim 1 wherein said removable tubular assembly has an end fitting adjacent the second port which blocks fluid flow within said central outer tube.

3. The permeator of claim 2 wherein the inner tube and central outer tube have matching apertures spaced along their length corresponding and in communication with the annular chambers within the bundle assemblies and the inner tube is sealably attached to the wall of the central outer tube at each aperture.

4. The permeator of claim 3 wherein the tubesheet end of each bundle assembly is removably attached to the central outer tube with said annular chamber sealably communicating with one of said spaced apertures and where the opposite end of each bundle is slideably attached to said central outer tube.

5. The permeator of claim 3 wherein said bundle assemblies have opposite ends of said hollow fibers mounted in a separate annular tubesheet each of which communicates with an annular chamber.

6. The permeator of claim 5 wherein one tubesheet of each bundle assembly is removably attached to the central outer tube with said annular chamber in fixed sealed communication with one of said spaced apertures and wherein the opposite tubesheet end of each bundle is slideably attached to said central outer tube.

7. The permeator of claim 4 wherein said annular tubesheet has an annular shroud ring sealably attached thereto, and an annular end cap is sealably attached to said shroud ring to enclose said annular chamber on the outer three sides.

8. The permeator of claim 7 wherein said annular end cap comprises an annular plate with a radially adjustable annular collar sealably attached to one surface of the plate.

9. The permeator of claim 1 wherein said bundle assemblies have opposite ends of said hollow fibers mounted in a separate annular tubesheet each of which communicates with an annular chamber.

10. The permeator of claim 1 wherein the first port is the residue outlet, the second port is the permeator outlet and the third port is the feed inlet.

11. The permeator of claim 1 wherein the first port is the feed inlet, the second port is the permeator outlet and the third port is the residue outlet.