Power generation system with rotary liquid piston compressor for transcritical and supercritical compression of fluids

Patent metadata

Field	Value
Publication number	US-12012974-B2
Application number	US-202117380818-A
Country	US
Kind code	B2
Filing date	Jul 20, 2021
Priority date	Jun 26, 2018
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A system includes a rotary liquid piston compressor configured to exchange pressure between a liquid and a supercritical fluid. The rotary liquid piston compressor includes a rotor configured to exchange pressure between the liquid and the supercritical fluid as the rotor rotates. The rotor defines channels that extend through the rotor. The rotary liquid piston compressor further includes barriers configured to block mixing between the liquid and the supercritical fluid. The barriers rest within the rotor. Each channel of the channels is configured to receive a barrier of the barriers.

First claim

What is claimed is:

1. A system comprising:
a rotary liquid piston compressor configured to exchange pressure between a liquid and a supercritical fluid, wherein the rotary liquid piston compressor comprises:
a rotor configured to exchange pressure between the liquid and the supercritical fluid as the rotor rotates, the rotor defining a plurality of channels that extend through the rotor; and
a plurality of barriers configured to block mixing between the liquid and the supercritical fluid, wherein the plurality of barriers rest within the rotor, and wherein each channel of the plurality of channels is configured to receive a barrier of the plurality of barriers.

2. The system of claim 1 , wherein the plurality of barriers comprises a plane diaphragm.

3. The system of claim 1 , wherein the plurality of barriers comprises a foldable diaphragm.

4. The system of claim 3 comprising a spring coupled to the foldable diaphragm.

5. The system of claim 1 comprising a plate, wherein the plurality of barriers are coupled to the plate, and wherein the plate is configured to couple to the rotor to couple the plurality of barriers to the rotor.

6. The system of claim 5 , wherein the rotor comprises a first rotor section and a second rotor section, and wherein the plate is configured to couple to the rotor between the first rotor section and the second rotor section.

7. The system of claim 6 , wherein the first rotor section forms first openings, the second rotor section forms second openings, and the plate forms third openings, wherein a plurality of fasteners removably attach the first rotor section, the second rotor section, and the plate via the first openings, the second openings, and the third openings.

8. A system comprising:
a rotary liquid piston compressor configured to exchange pressure between a liquid and a supercritical fluid, wherein the rotary liquid piston compressor comprises a rotor configured to exchange pressure between the liquid and the supercritical fluid as the rotor rotates, the rotor defining a plurality of channels that extend through the rotor; and a thermal management system surrounding at least a portion of the rotor, wherein the thermal management system is configured to exchange heat with the rotary liquid piston compressor.

9. The system of claim 8 , wherein the thermal management system comprises a plurality of conduits that wrap around housing of the rotary liquid piston compressor.

10. The system of claim 9 , wherein each conduit of the plurality of conduits has a diameter between about 0.05 mm and 0.5 mm.

11. The system of claim 8 , wherein the thermal management system comprises a cooling system configured to circulate a cooling fluid to remove heat from the rotary liquid piston compressor.

12. The system of claim 11 , wherein the cooling system is configured to prevent phase change of the supercritical fluid to gas.

13. The system of claim 9 , wherein the thermal management system comprises a heating system configured to circulate a heating fluid to heat the rotary liquid piston compressor.

14. The system of claim 9 , wherein the thermal management system comprises an electric coil configured to heat the rotary liquid piston compressor.

15. A system comprising:
a rotary liquid piston compressor configured to exchange pressure between a first fluid and a second fluid, wherein the rotary liquid piston compressor comprises:
a rotor configured to exchange pressure between the first fluid and the second fluid as the rotor rotates, the rotor defining a plurality of channels that extend through the rotor; and
a plurality of foldable diaphragms configured to block mixing between the first fluid and the second fluid, wherein the plurality of foldable diaphragms rest within the rotor, and wherein each channel of the plurality of channels is configured to receive a respective foldable diaphragm of the plurality of foldable diaphragms.

16. The system of claim 15 , wherein a first foldable diaphragm of the plurality of foldable diaphragms is configured to expand within a first channel of the plurality of channels as the first fluid flows into the first foldable diaphragm to drive a portion of the second fluid out of the first channel to pressurize the second fluid.

17. The system of claim 15 , wherein a second foldable diaphragm of the plurality of foldable diaphragms is configured to compress within a second channel of the plurality of channels as a portion of the second fluid enters the second channel prior to the portion of the second fluid being pressurized by the first fluid.

18. The system of claim 15 , wherein:
the first fluid is a liquid and the second fluid is a supercritical fluid; or
the first fluid is the supercritical fluid and the second fluid is the liquid.

19. The system of claim 15 , wherein the rotor is configured to rotate about a central axis of the rotary liquid piston compressor.

20. The system of claim 15 further a plate coupled to the plurality of foldable diaphragms, wherein the plate is disposed between a first portion of the rotor and a second portion of the rotor.

Assignees

• Energy Recovery Inc

Inventors

• Thatte Azam

Classifications

• F15B3/00

  Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids {(fluid-driven pumps F04B9/08)} · CPC title

• F01D15/10

  Adaptations for driving, or combinations with, electric generators · CPC title

• F02C1/105

  construction; details · CPC title

• F01K7/32 Primary

  the engines using steam of critical or overcritical pressure · CPC title

• F01K25/103

  Carbon dioxide (F01K25/065 takes precedence) · CPC title