Degassers, degassing systems and the methods of using them

Patent metadata

Field	Value
Publication number	US-12226715-B2
Application number	US-202017442705-A
Country	US
Kind code	B2
Filing date	Mar 24, 2020
Priority date	Mar 26, 2019
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

Degassers, degassing systems, and methods of using degassers to remove gas molecules entrapped or dissolved in a processing liquid. The degasser has a vacuum chamber with one or more walls; one or multiple inlets and one or multiple outlets through which the liquid is respectively passed into and out of the vacuum chamber, the inlet(s) and the outlet(s) penetrating the one or more walls; one or multiple separators located inside the vacuum chamber and being pervious to the gas molecules but impervious to the liquid; at least one vacuum for applying through a vacuum port a pressure differential across the separator(s) to cause the gas molecules to leave the liquid and to permeate through the separator(s) thereby removing the entrapped or dissolved gas from the liquid; and optionally one or multiple feed lines in fluid communication with the inlet(s) and two or more than two separators.

First claim

The invention claimed is:

1. A degasser for removing molecules of gasses entrapped or dissolved in a processing liquid, the degasser comprising:
a vacuum chamber having one or more than one vacuum chamber wall;
one or more than one fluid inlet and one or more than one fluid outlet through which the processing liquid is respectively passed into and out of the vacuum chamber, the one or more than one inlet and the one or more than one outlet penetrating at least one of the vacuum chamber walls;
two or more separators located inside the vacuum chamber and being configured to be pervious to the molecules of the entrapped or dissolved gas but impervious to the processing liquid;
at least one vacuum for applying through a vacuum port a pressure differential across the two or more separators to cause the molecules of the entrapped or dissolved gas to leave the processing liquid and to permeate through the two or more separators thereby removing the entrapped or dissolved gas from the processing liquid;
one or more than one feed line in fluid communication with the one or more than one inlet and the two or more separators; and
at least one valve upstream of each separator except for one separator so that all but one separator can be isolated from that one separator.

2. The degasser of claim 1 comprising the one or more than one feed line connected to the one or more than one inlet and having two or more than two junctions (JA, JB, JC) connecting two or more than two separators to the one or more than one feed line if there are more separators than inlets.

3. The degasser of claim 1 comprising three or more separators.

4. The degasser of claim 1 comprising one inlet.

5. The degasser of claim 1 comprising two or more inlets.

6. The degasser of claim 1 comprising three or more inlets.

7. The degasser of claim 1 comprising one outlet.

8. The degasser of claim 1 comprising two or more outlets.

9. The degasser of claim 1 comprising three or more outlets.

10. The degasser of claim 1 comprising one feed line in fluid communication with the two or more separators.

11. The degasser of claim 1 comprising one feed line in fluid communication with three or more separators.

12. The degasser of claim 1 comprising a collection line in fluid communication with the two or more separators.

13. The degasser of claim 1 comprising a collection line in fluid communication with three or more separators.

14. The degasser of claim 12 comprising at least one valve in the one or more than one feed line and at least one valve in the collection line that when closed isolate a flow path comprising an inlet, a separator, and an outlet from one or more other flow paths comprising one or more than one other separator in the degasser.

15. The degasser of claim 1 further comprising a pressure gauge and a variable speed pump in fluid communication with the vacuum chamber.

16. The degasser of claim 15 further comprising a control system in electrical communication with the pressure gauge and the pump to adjust the pump speed of the variable speed pump when the pressure is not at a predetermined pressure.

17. The degasser of claim 1 wherein a first separator degasses a first processing fluid and a second separator degasses a second processing fluid.

18. The degasser of claim 1 further comprising a housing.

19. The degasser of claim 13 comprising at least one valve in the one or more than one feed line and at least one valve in the collection line that when closed isolate a flow path comprising an inlet, a separator, and an outlet from one or more other flow paths comprising one or more than one other separator in the degasser.

Assignees

• Versum Mat Us Llc

Inventors

• Eshelman David C
• Reese Bradley Taylor
• Barthold Jeffery C
• Fontana Christopher D

Classifications

• B01D63/069

  comprising a bundle of tubular membranes · CPC title

• B01D2221/14

  Separation devices for workshops, car or semiconductor industry, e.g. for separating chips and other machining residues · CPC title

• B01D69/02

  characterised by their properties · CPC title

• B01D19/0036 Primary

  Flash degasification (the other groups take precedence) · CPC title

• B01D2323/20

  Plasticizers · CPC title