Systems including a condensing apparatus such as a bubble column condenser

Patent metadata

Field	Value
Publication number	US-9700811-B2
Application number	US-201514667113-A
Country	US
Kind code	B2
Filing date	Mar 24, 2015
Priority date	Sep 12, 2013
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Condensing apparatuses and their use in various heat and mass exchange systems are generally described. The condensing apparatuses, such as bubble column condensers, may employ a heat exchanger positioned external to the condensing vessel to remove heat from a bubble column condenser outlet stream to produce a heat exchanger outlet stream. In certain cases, the condensing apparatus may also include a cooling device positioned external to the vessel configured and positioned to remove heat from the heat exchanger outlet stream to produce a cooling device outlet stream. The condensing apparatus may be configured to include various internal features, such as a vapor distribution region and/or a plurality of liquid flow control weirs and/or chambers within the apparatus having an aspect ratio of at least 1.5. A condensing apparatus may be coupled with a humidifier to form part of a desalination system, in certain cases.

First claim

What is claimed is:

1. A condenser system, comprising:
a bubble column condenser, comprising:
a vessel, comprising:
a first condenser gas inlet in fluid communication with a source of a first gas comprising a non-condensable gas and a condensable fluid in vapor phase;
a condenser gas outlet;
a condenser liquid outlet;
a first stage comprising a first bubble generator, a first liquid layer comprising an amount of the condensable fluid in liquid phase, and a first vapor distribution region positioned above the first liquid layer, wherein the first condenser gas inlet is in fluid communication with the first bubble generator;
a second stage comprising a second bubble generator and a second liquid layer comprising an amount of the condensable fluid in liquid phase, wherein the second bubble generator is in fluid communication with the first vapor distribution region positioned above the first liquid layer,
wherein the first bubble generator generates bubble of the first gas in the first liquid layer, wherein the second bubble generator generates bubble of the first gas in the second liquid layer, and wherein the bubble column condenser removes at least a portion of the condensable fluid from the first gas to produce a bubble column condenser outlet stream comprising the condensable fluid in liquid phase; and

a liquid-to-liquid heat exchanger positioned external to the vessel and fluidly connected to the condenser liquid outlet of the vessel, wherein the heat exchanger receives the bubble column condenser outlet stream and removes heat from the bubble column condenser outlet stream to produce a heat exchanger outlet stream, and wherein the heat exchanger is positioned external to any condenser of the system.

2. The condenser system of claim 1 , wherein the condensable fluid comprises water.

3. The condenser system of claim 1 , wherein the first gas comprises air.

4. The condenser system of claim 1 , wherein a pressure in the bubble column condenser is maintained at approximately ambient atmospheric pressure.

5. The condenser system of claim 1 , wherein the first bubble generator and/or the second bubble generator comprise a sparger plate comprising a plurality of holes, wherein at least a portion of the plurality of holes have a diameter in a range of about 0.1 mm to about 50 mm.

6. The condenser system of claim 5 , wherein at least a portion of the plurality of holes have a diameter in a range of about 1 mm to about 5 mm.

7. The condenser system of claim 1 , wherein the first gas is distributed throughout the first vapor distribution region.

8. The condenser system of claim 1 , wherein the first liquid layer and/or the second liquid layer have a height of about 0.1 m or less during substantially continuous operation.

9. The condenser system of claim 1 , wherein a ratio of a height of the first liquid layer or the second liquid layer to a length of the condenser is about 1.0 or lower during substantially continuous operation.

10. The condenser system of claim 1 , wherein the first stage and/or the second stage of the bubble column condenser have a height of about 0.5 m or less.

11. The condenser system of claim 1 , wherein the first stage and the second stage are arranged vertically within the bubble column condenser.

12. The condenser system of claim 1 , wherein the bubble column condenser outlet stream flows in a first direction and a stream comprising the first gas flows in a second, opposing direction.

13. The condenser system of claim 1 , wherein the first gas has a velocity in a range of about 10 to about 200 cfm/ft 2 .

14. The condenser system of claim 1 , wherein the vessel further comprises a second condenser gas inlet in fluid communication with a source of a second gas.

15. The condenser system of claim 14 , wherein the first gas and the second gas are maintained at different temperatures and/or are provided at different vapor concentrations.

16. The condenser system of claim 1 , wherein the bubble column condenser has a total height of about 4 m or less.

17. The condenser system of claim 1 , wherein the bubble column condenser further comprises a stack in fluid communication with the condenser gas outlet, wherein the condenser gas outlet has a largest cross-sectional dimension, and wherein the stack has a largest cross-sectional dimension larger than the largest cross-sectional dimension of the condenser gas outlet.

18. The condenser system of claim 1 , wherein the heat exchanger receives the bubble column condenser outlet stream at a heat exchanger inlet temperature and produces the heat exchanger outlet stream at a heat exchanger outlet temperature, wherein the difference between the heat exchanger inlet temperature and the heat exchanger outlet temperature is in a range of about 10° C. to about 90° C.

19. The condenser system of claim 1 , wherein the heat exchanger receives the bubble column condenser outlet stream and a salt-containing water stream, wherein the heat exchanger flows the bubble column condenser outlet stream in a first direction through the heat exchanger and flows the salt-containing water stream in a second, opposing direction through the heat exchanger.

20. The condenser system of claim 1 , wherein the bubble column condenser receives at least a portion of the heat exchanger outlet stream.

21. The condenser system of claim 1 , wherein at least a portion of the heat exchanger outlet stream is discharged from the condenser system.

22. The condenser system of claim 1 , further comprising a heating device fluidly connected to the bubble column condenser and/or the heat exchanger.

23. The condenser system of claim 22 , wherein the heating device receives the bubble column condenser outlet stream at a heating device inlet temperature and produces a heating device outlet stream at a heating device outlet temperature, wherein the difference between the heating device inlet temperature and the heating device outlet temperature is in a range of about 10° C. to about 90° C., wherein the heat exchanger receives at least a portion of the heating device outlet stream.

24. The condenser system of claim 1 , wherein the vessel does not comprise an internal conduit configured to exchange heat between the first gas and a liquid stream.

25. The condenser system of claim 1 , wherein the first liquid layer comprises a substantially continuous layer of the condensable fluid in liquid phase.

26. The condenser system of claim 1 , further comprising a second vapor distribution region positioned above the second liquid layer.

27. The condenser system of claim 1 , further comprising a downcomer arranged between the first stage and the second stage to facilitate flow of the condensable fluid in liquid phase from the second stage to the first stage.

28. The condenser system of claim 1 , wherein the bubble column condenser outlet stream comprises substantially pure water.

29. The condenser system of claim 1 , wherein the liquid-to-liquid heat exchanger is a plate-and-frame heat exchanger, a shell-and-tube heat exchanger, a tube-and-tube heat exchanger, a plate heat exchanger, and/or a plate-and-shell heat exchanger.

30. The condenser system of claim 1 , wherein the vessel further comprises a condenser liquid inlet in fluid communication with a source of the condensable fluid in liquid phase.

Assignees

• Gradiant Corp

Inventors

• Govindan Prakash Narayan
• Lam Steven
• St John Maximus G

Classifications

• B01D3/225

  Dual-flow sieve trays · CPC title

• B01D5/0003

  by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium · CPC title

• F24F6/12

  by forming water dispersions in the air · CPC title

• B01D1/14 Primary

  with heated gases or vapours {or liquids} in contact with the liquid · CPC title

• Y02W10/37

  using solar energy · CPC title