Modular, shell-less, air permeator

• US 4,871,379 A
• Filed: 12/22/1987
• Issued: 10/03/1989
• Est. Priority Date: 12/22/1987
• 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): SPITZER, ROBERT H
• Application Number:
  US07/136,845
• Time in Patent Office: 651 Days
• Field of Search: 55/16, 55/158, 55/189
• US Class Current: 96/8
• CPC Class Codes: B01D 2313/20 Specific housing
• CPC Class Codes: B01D 2313/2011 Pressure vessels
• CPC Class Codes: B01D 2313/54 Modularity of membrane module elements
• CPC Class Codes: B01D 2319/04 Elements in parallel
• 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 63/046 in separate housings

Abstract

Shell-less hollow fiber gas permeators are disclosed wherein the hollow fibers are arranged in a bundle of paallel fibers embedded in a tube sheet at both ends. The tube sheets are fitted with caps to provide a pressure chamber which have ports for fluid communication. The end caps and tube sheets are mounted on a central rod to hold them rigidly in position. A plurality of the permeators are arranged in an array within an enclosure with ends in a common plane and the ends are in fluid communication with each other. The enclosure is provided with a vent and in a preferred aspect air is drawn over the permeators.

Claims

1. A shell-less gas permeator comprising an elongated bundle of hollow fibers having a tubesheet on both ends, end caps enclosing both tubesheets and forming pressure chambers in combination with said hollow fibers, the first chamber being an inlet and the second chamber being a residue gas outlet, a support rod in the center of the bundle of hollow fibers passing through and rigidly attached to each tubesheet and end cap, and a passage establishing fluid communication between the outside of each end cap and the chamber within such cap.

2. The permeator of claim 1 wherein the end caps are adapted for stacking with a similar permeator and the passage in one end cap is a manifold segment adapted to communicate with a similar manifold in an adjacent end cap.

3. An assembly of permeators of claim 2 comprising a plurality of such permeators arranged in a parallel array with the ends of said permeators arranged in the same plane, means to enclose the array of permeators, means to establish communication between the ends of the permeators in the same plane, thereby establishing a common feed inlet and a common residue outlet and means to vent the enclosure thereby establishing a permeate outlet.

4. The assembly of permeators of claim 3 wherein the outlet is provided with means to provide a sub-atmospheric pressure in the enclosure means.

5. An assembly of permeators of claim 1 comprising a plurality of such permeators arranged in a parallel array with the ends of said permeators arranged in the same plane, means to enclose the array of permeators, means to establish communication between the ends of the permeators in the same plane, thereby establishing a common feed inlet and common residue outlet and means to vent the enclosure thereby establishing a permeate outlet.

6. The assembly of permeators of claim 5 wherein the outlet is provided with means to provide a sub-atmospheric pressure in the enclosure means.

7. The permeator of claim 1 further comprising a baffle positioned in the first chamber to direct fluid flow parallel to the face of the tubesheet.

8. A shell-less fluid permeator comprising an elongated bundle of hollow fibers having a tubesheet on both ends, an end cap enclosing both tubesheets and forming a pressure chamber, the first chamber being an inlet and the second chamber being a residue fluid outlet, a support rod in the center of the bundle of hollow fibers rigidly attached to each tubesheet and end cap, and a passage establishing fluid communication between the outside of each end cap and chamber within such cap.