Filtration cartridge and reactor

• US 4,610,789 A
• Filed: 04/22/1985
• Issued: 09/09/1986
• Est. Priority Date: 04/22/1985
• Status: Expired due to Fees

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Barch, Herbert W.
• Primary Examiner(s): Sever, Frank
• Application Number:
  US06/725,872
• Time in Patent Office: 505 Days
• Field of Search: 210/321.1, 210/321.2, 210/321.3, 210/321.4, 210/405, 210/456, 210/500.2, 210/450
• US Class Current: 210/321.87
• CPC Class Codes: B01D 2313/23 Specific membrane protectors, e.g. sleeves or screens
• CPC Class Codes: B01D 2313/44 Cartridge types
• CPC Class Codes: B01D 63/024 with a single potted end
• CPC Class Codes: B01D 63/031 Two or more types of hollow fibres within one bundle or within one potting or tube-sheet
• CPC Class Codes: C12M 29/16 Hollow fibers hollow fiber modules in general B01D63/02

Abstract

A filter cartridge is structured of a filtration mat assembly wrapped or rolled about a central distribution tube. The filtration mat includes a plurality of hollow porous fiber strands carried by a fluid permeable sheet. Once the mat has been wrapped about the porous central distribution tube, both ends of the mat and distribution tube are firmly embedded in end caps. The central distribution tube is comprised of two tube segments which are telescopingly connected. Shrinkage and contraction or swelling and elongation of the mat'"'"'s fibers cause the end caps to move toward or away from each other. This movement of the end caps is able to occur due to the ability of the telescoping central distribution tube to decrease or increase in length.

Claims

1. A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising:

a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet;

a porous central distribution tube about which said filtration mat assembly is wrapped;

spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and

means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing said strands upon compression.

2. The cartridge of claim 1 wherein said central distribution tube is comprised of an upper distribution tube segment and a lower distribution tube segment.

3. The cartridge of claim 2 wherein said means for varying the length of said central distribution tube is a telescoping engagement of said upper and lower distribution tube segments.

4. The cartridge of claim 3 wherein a first of said tube segments includes a reduced diameter end portion which is receivable within a second of said tube segments to effect said telescoping engagement.

5. The cartridge of claim 4 wherein said first tube segment includes a shoulder at the termination of said reduced diameter end portion, said shoulder limiting the telescoping contraction of said central distribution tube.

6. The cartridge of claim 2 wherein a first of said tube segments is firmly embedded in, and passes through, a first one of said end caps, and further wherein a second of said tube segments is firmly embedded in, and terminates in, a second one of said end caps.

7. The cartridge of claim 1 wherein said strands are glass strands.

8. A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising:

a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet;

a porous central distribution tube about which said filtration mat assembly is wrapped;

spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and

means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing strands upon compression.

9. The cartridge of claim 8 wherein said central distribution tube is comprised of an upper distribution tube segment and a lower distribution tube segment.

10. The cartridge of claim 9 wherein said means for varying the length of said central distribution tube is a telescoping engagement of said upper and lower distribution tube segments.

11. The cartridge of claim 10 wherein a first of said tube segments includes a reduced diameter end portion which is receivable within a second of said tube segments to effect said telescoping engagement.

12. The cartridge of claim 11 wherein said first tube segment includes a shoulder at the termination of said reduced diameter end portion, said shoulder limiting the telescoping contraction of said central distribution tube.

13. The cartridge of claim 9 wherein a first of said tube segments is firmly embedded in, and passes through, a first one of said end caps, and further wherein a second of said tube segments is firmly embedded in, and terminates in, a second one of said end caps.

14. The cartridge of claim 8 wherein said porous strands are also hollow.

15. The cartridge of claim 14 wherein said strands are glass strands.

16. The cartridge of claim 8 wherein said strands are glass strands.