Zirconium phosphate and zirconium oxide recharging flow paths

Patent metadata

Field	Value
Publication number	US-10052624-B2
Application number	US-201615143487-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Nov 26, 2013
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

Systems and methods for recharging zirconium phosphate and zirconium oxide are provided. The systems and methods provide for recharging of the zirconium phosphate and zirconium oxide in reusable sorbent modules. The systems and methods include recharging flow paths for recharging zirconium phosphate independently or concurrently.

First claim

We claim:

1. A recharging flow path, comprising:
a zirconium phosphate recharging flow path and a zirconium oxide recharging flow path;
the zirconium phosphate recharging flow path comprising:
i) a water source, a disinfectant source, and a brine source;
ii) a zirconium phosphate module inlet and a zirconium phosphate module outlet; wherein the zirconium phosphate module inlet and the zirconium phosphate module outlet are fluidly connectable to a sorbent module containing zirconium phosphate;
iii) at least one zirconium phosphate pump for conveying fluid from the water source, the disinfectant source, and the brine source to the zirconium phosphate module inlet; and
iv) a zirconium phosphate effluent line in fluid connection to the zirconium phosphate module outlet;
the zirconium oxide recharging flow path comprising:
i) the water source, the disinfectant source, and a base source;
ii) a zirconium oxide module inlet and a zirconium oxide module outlet; wherein the zirconium oxide module inlet and the zirconium oxide module outlet are fluidly connectable to a sorbent module containing zirconium oxide;
iii) at least one zirconium oxide pump for conveying fluid from the water source, the disinfectant source, and the base source to the zirconium oxide module inlet; and
iv) a zirconium oxide effluent line in fluid connection to the zirconium oxide module outlet.

2. The recharging flow path of claim 1 , wherein either or both of the zirconium phosphate recharging flow path and the zirconium oxide recharging flow path comprise at least two pumps.

3. The recharging flow path of claim 1 , wherein the zirconium phosphate effluent line is fluidly connected to the zirconium oxide effluent line at an effluent line junction.

4. The recharging flow path of claim 3 , further comprising a static mixer downstream of the effluent line junction.

5. The recharging flow path of claim 4 , further comprising a drain line fluidly connected to the effluent line junction, wherein the drain line is fluidly connected to a drain downstream of the static mixer.

6. The recharging flow path of claim 1 , wherein the zirconium phosphate effluent line is fluidly connected to a first waste reservoir; and wherein the zirconium oxide effluent line is fluidly connected to a second waste reservoir.

7. The recharging flow path of claim 1 , further comprising a common reservoir, said common reservoir being fluidly connected to the zirconium phosphate effluent line and zirconium oxide effluent line.

8. The recharging flow path of claim 1 , further comprising either or both of:
a heater positioned in the zirconium phosphate recharging flow path upstream of the zirconium phosphate module inlet; or
a heater positioned in the zirconium oxide recharging flow path upstream of the zirconium oxide module inlet.

9. The recharging flow path of claim 8 , further comprising a heat exchanger; wherein the heat exchanger comprises at least a first chamber and a second chamber; and wherein either or both of:
the first chamber is positioned in the zirconium phosphate recharging flow path upstream of the heater; and the second chamber is positioned in the zirconium phosphate effluent line; or
the first chamber is positioned in the zirconium oxide recharging flow path upstream of the heater; and wherein the second chamber is positioned in the zirconium oxide effluent line.

10. The recharging flow path of claim 9 , wherein either or both of the zirconium phosphate recharging flow path or zirconium oxide recharging flow path further comprise a rinse loop; wherein the rinse loop is fluidly connected to a first valve positioned in the zirconium phosphate recharging flow path upstream of the heater and heat exchanger connected to a second valve positioned in the zirconium phosphate recharging flow path downstream of the heater and heat exchanger and upstream of the zirconium phosphate module inlet; or wherein the rinse loop is fluidly connected to a first valve positioned in the zirconium oxide recharging flow path upstream of the heater and heat exchanger and a second valve positioned in the zirconium oxide recharging flow path downstream of the heater and heat exchanger and upstream of the zirconium oxide module inlet.

11. The recharging flow path of claim 1 , further comprising either or both of a zirconium phosphate bypass line and a zirconium oxide bypass line; wherein the zirconium phosphate bypass line fluidly connects the zirconium phosphate recharging flow path at a position upstream of the zirconium phosphate module inlet to the zirconium phosphate effluent line; and wherein the zirconium oxide bypass line fluidly connects the zirconium oxide recharging flow path at a position upstream of the zirconium oxide module inlet to the zirconium oxide effluent line.

12. The recharging flow path of claim 3 , further comprising a first sensor positioned in the zirconium phosphate effluent line and a second sensor positioned in the zirconium oxide effluent line.

13. The recharging flow path of claim 1 , further comprising a first sensor in the zirconium phosphate recharging flow path and a second sensor in the zirconium oxide recharging flow path.

14. The recharging flow path of claim 13 , further comprising:
a first zirconium phosphate pump and a second zirconium phosphate pump; wherein the water source is fluidly connected to the zirconium phosphate recharging flow path through a first valve;
wherein either or both of the disinfectant source and brine source is fluidly connected to the zirconium phosphate recharging flow path through a second valve;
the first zirconium phosphate pump positioned in the zirconium phosphate recharging flow path downstream of the first valve and upstream of a static mixer; and the second zirconium phosphate pump positioned in the zirconium phosphate recharging flow path downstream of the second valve and upstream of the static mixer.

15. The recharging flow path of claim 14 , wherein the first sensor is positioned downstream of the static mixer.

16. The recharging flow path of claim 13 , further comprising:
a first zirconium oxide pump and a second zirconium oxide pump; wherein the water source is fluidly connected to the zirconium oxide recharging flow path through a first valve;
wherein the disinfectant source and the base source are fluidly connected to the zirconium oxide recharging flow path through a second valve;
wherein the first zirconium oxide pump is positioned in the zirconium oxide recharging flow path downstream of the first valve and upstream of a static mixer; and the second zirconium oxide pump is positioned in the zirconium oxide recharging flow path downstream of the second valve and upstream of the static mixer; wherein the second sensor is positioned downstream of the static mixer.

17. The recharging flow path of claim 1 , wherein at least one of the water source, disinfectant source, brine source, and base source is external to a recharger housing.

18. The recharging flow path of claim 17 , wherein at least one of the water source, disinfectant source, brine source, and base source are fluidly connected to a second recharging flow path.

19. The recharging flow path of claim 1 , wherein the disinfectant source is a peracetic acid solution having a concentration in a range between 0.5% and 2% of peracetic acid in water.

20. The recharging flow path of claim 1 , wherein the base source is a sodium hydroxide solution having a concentration greater than 2% of sodium hydroxide in water.

Assignees

• Medtronic Inc

Inventors

• Menon Kanjimpuredathil Muralikrishna
• Jeyachandran Ramkumar
• Patil Kaustubh R
• Dutta Sukalyan
• Loganathan Gokul Prabhu
• Lura David B
• Pudil Bryant J
• Hobot Christopher M

Classifications

• B01J41/10

  Inorganic material · CPC title

• B01J39/12

  Compounds containing phosphorus · CPC title

• B01J49/0078 Primary

  Operations & Transport · mapped topic

• A61M1/169

  using chemical substances · CPC title

• A61L12/00

  Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor · CPC title