Fluid degassing apparatus

Patent metadata

Field	Value
Publication number	US-9656186-B2
Application number	US-201514725037-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	Sep 12, 2011
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

An elongated flow-through degassing apparatus includes an elongated gas permeable outer shell and one or more gas-permeable, liquid-impermeable elongated inner conveyance members extending within the outer shell and at least partially through a chamber defined within the outer shell. The apparatus also includes inlet and outlet junctions for securing the outer shell to the inner conveyance member. The outer shell exhibits a first permeance that is substantially greater than a second permeance of the inner conveyance member. The degassing apparatus may be sufficiently flexible so as to be readily manipulatable into desired configurations.

First claim

What is claimed is:

1. An apparatus for degassing a fluid having a liquid and a target gas, said apparatus comprising:
a first porous barrier separating a first chamber from an environment, said first barrier having a porosity communicating said first chamber to the environment, wherein said porosity provides for a first permeance to the target gas; and
a second non-porous, gas-permeable barrier separating said first chamber into a retentate side and a permeate side, said second barrier being arranged for contacting the fluid at said retentate side, and providing for a second permeance to the target gas, wherein a ratio of said first permeance to said second permeance is between 5:1 and 1000:1.

2. An apparatus as in claim 1 wherein said second barrier is a tube with a lumen defining said retentate side of said first chamber.

3. An apparatus as in claim 2 wherein said first barrier is configured as a sheath surrounding said tube.

4. An apparatus as in claim 1 wherein the environment is at atmospheric pressure.

5. An apparatus for degassing a fluid having a liquid and a target gas, said apparatus comprising:
an outer tube having a first lumen defining a first chamber, and a porous first wall surrounding the first lumen;
an inner tube disposed in said first chamber and having a second lumen defining a second chamber, and a non-porous, gas-permeable second wall surrounding the second lumen.

6. An apparatus as in claim 5 wherein said outer tube encases said inner tube.

7. An apparatus as in claim 5 wherein said second wall separates said first and second chambers.

8. An apparatus as in claim 7 wherein said inner tube is arranged to maintain a continuous radial gap between said first and second walls.

9. A method for degassing a fluid having a liquid and a target gas, said method comprising:
(a) providing the apparatus of claim 5 ; and
(b) passing the fluid through the second chamber to permit the gas to permeate through the second wall.

10. A method as in claim 9 wherein the first chamber is at atmospheric pressure.

Assignees

• Idex Health & Science Llc
• Idex Health And Science Llc

Inventors

• Sims Carl
• Gerner Yuri
• Liu Quan

Classifications

• B01D19/0031 Primary

  by filtration · CPC title

• B01D71/34

  Polyvinylidene fluoride · CPC title

• B01D71/36

  Polytetrafluoroethylene · CPC title

• B01D2313/23

  Specific membrane protectors, e.g. sleeves or screens · CPC title

• B01D63/06

  Tubular membrane modules · CPC title