Antitelescoping device and clamp for spiral wound modules comprising a vent

Patent metadata

Field	Value
Publication number	US-9925498-B2
Application number	US-201415026978-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Oct 3, 2013
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A gas separation module comprising: (a) a permeate collection tube; (b) a membrane envelope wound spirally around the tube to provide a wound membrane structure comprising two end faces; and (c) an anti-telescoping device (ATD) secured to the permeate collection tube, the ATD comprising: (i) an inner peripheral part, (ii) an outer peripheral part which surrounds the inner peripheral part, (iii) one or more connection parts which connect the inner peripheral part and the outer peripheral part and which contacts with one of said end faces; (iv) vents which allow gas to flow through the ATD; wherein the ATD satisfies Formula (1): (L CP−L contact)/(L VENT)=R Formula (1) wherein: R is from 1.47 to 1.88; L VENT is the cross sectional area of the vents which allow gas to flow through the ATD; L CP is the total area inside the outer peripheral part; and L contact is the contact area of the connection parts and the end face of the wound membrane envelope. Clamps are also claimed.

First claim

The invention claimed is:

1. A gas separation module comprising:
(a) a permeate collection tube;
(b) a membrane envelope wound spirally around the tube to provide a wound membrane structure comprising two end faces; and
(c) an anti-telescoping device (ATD) secured to the permeate collection tube, the ATD comprising:
(i) an inner peripheral part,
(ii) an outer peripheral part which surrounds the inner peripheral part,
(iii) one or more connection parts which connect the inner peripheral part and the outer peripheral part and which contacts with one of said end faces; and
(iv) vents which allow gas to flow through the ATD;

wherein the ATD satisfies Formula (1):
( L CP −L contact )/( L VENT )= R   Formula (1)

wherein:
R is from 1.47 to 1.88;
L VENT is the cross sectional area of the vents which allow gas to flow through the ATD;
L CP is the total area inside the outer peripheral part; and
L contact is the contact area of the connection parts and the end face of the wound membrane envelope.

2. The gas separation module according to claim 1 wherein at least one of the one or more connection parts has a face nearest to the wound membrane structure and a face furthest away from the wound membrane structure, wherein the face nearest to the wound membrane structure is narrower than the face furthest away from the wound membrane structure.

3. The gas separation module according to claim 1 wherein the one or more connection parts have a trapezoidal cross section wherein the narrowest end of the trapezoid is nearer to the wound membrane structure than the widest end of the trapezoid.

4. The gas separation module according to claim 3 wherein the one or more connection parts has an isosceles trapezoidal cross section having a base angle of 70 to 89°.

5. The gas separation module according to claim 1 which further comprises a clamp for securing the ATD in contact with an end face of the wound membrane structure.

6. The gas separation module according to claim 5 wherein the clamp comprises vents through which gas may flow.

7. The gas separation module according to claim 1 wherein the permeate collection tube and the wound membrane structure have a circular cross section.

8. The gas separation module according to claim 1 wherein the ATD has the profile of a spoked-wheel, when viewed in a plane perpendicular to the permeate collection tube.

9. The gas separation module according to claim 6 wherein the clamp comprises at least two parts, which parts are secured together around the permeate collection tube.

10. The gas separation module according to claim 1 wherein the wound membrane structure further comprises a permeate carrier.

11. The gas separation module according to claim 1 wherein the wound membrane structure further comprises a permeate envelope comprising at least two permeate spacers and a gas-impermeable sheet, wherein the gas-impermeable sheet is located between the at least two permeate spacers.

12. The gas separation module according to claim 1 wherein the membrane envelope comprises a feed spacer and one or more membranes, wherein the feed spacer is sandwiched between the one or more membranes.

13. The gas separation module according to claim 1 which comprises two of said ATDs, one at each end of the wound membrane structure and in contact with the respective end face, thereby preventing the wound membrane structure from unwinding from the tube.

14. The gas separation module according to claim 10 which further comprises two clamps for securing the ATDs in contact with the respective end faces, wherein the clamps comprise vents through which gas may flow.

15. A gas separation device comprising two or more modules according to claim 1 .

16. A process for separation of a feed gas containing a target gas into a gas stream rich in the target gas and a gas stream depleted in the target gas comprising passing the feed gas through a module according to claim 1 .

17. A process for separation of a feed gas containing a target gas into a gas stream rich in the target gas and a gas stream depleted in the target gas comprising passing the feed gas through a module according to claim 6 .

Assignees

• Fujifilm Mfg Europe Bv
• Fujifilm Corp

Inventors

• Toet Erwin
• Miyagishima Nori
• Jessen Peter
• Koudijs Marcel
• Van Der Burg Eduard
• Itami Yujiro

Classifications

• B01D2313/143

  on the feed side · CPC title

• B01D71/64

  Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors · CPC title

• B01D2313/16

  Specific vents · CPC title

• B01D2313/02

  Specific tightening or locking mechanisms · CPC title

• B01D53/228

  characterised by specific membranes · CPC title