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Title:
SYSTEM AND METHOD FOR RECOVERY AND COOLING OF STEAM AND HIGH TEMPERATURE CONDENSATE
Document Type and Number:
WIPO Patent Application WO/2014/032027
Kind Code:
A4
Abstract:
The present invention is directed to a system for recovery and cooling of steam and high temperature condensate and disposed between a feed water source (104) and a steam source (102) comprising a fluid circulation loop between the steam source and the feed water source including a steam trap (128) that receives a mixture of steam and high temperature condensate from the steam source, wherein the steam trap discharges high temperature condensate from the steam source, and a fluid cooling mechanism (106) which receives the high temperature condensate from the steam trap and cools the high temperature condensate. Alternatively, a condenser may be provided instead of the steam trap, wherein the condenser receives steam and high temperature condensate from the steam source and condenses the steam to a liquid state. The condensed liquid is subsequently provided to the fluid cooling mechanism.

Inventors:
PENTON, John David (Inc.6001 Bollinger Roa, San Ramon California, 94583, US)
Application Number:
US2013/056514
Publication Date:
December 11, 2014
Filing Date:
August 23, 2013
Export Citation:
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Assignee:
CHEVRON U.S.A. INC. (6001 Bollinger Canyon RoadSan Ramon, California, 94583-2324, US)
International Classes:
F22B1/00; F16T1/00; F22B35/00; F22B37/50; F28D15/00; F28D21/00; F28F17/00
Attorney, Agent or Firm:
PORTER, Gregory L. et al. (Andrews Kurth LLP, 600 Travis Suite 420, Houston Texas, 77002, US)
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Claims:
AMENDED CLAIMS

received by the International Bureau on 06 October 2014 (06.10.2014)

1. A system for recovery and cooling of steam and high temperature condensate and disposed between a feed water source and a steam source, the system comprising: a fluid circulation loop between the steam source and the feed water source, the fluid circulation loop including: a steam trap configured to receive a mixture of steam and high temperature condensate from the steam source and remove high temperature condensate from the steam source; a fluid cooling mechanism configured to cool the high temperature condensate at a first rate; a fluid storage device configured to accumulate cooled condensate from the fluid cooling mechanism, and subsequently release the cooled condensate back to the feed water source at a second rate.

2. (cancelled).

3. The system of claim 1, further comprising a pump configured for pushing cooled condensate leaving the fluid storage device to the feed water source.

4. The system of claim 1, further comprising a mixing tank disposed between the fluid circulation loop and the feed water source for integrating cooled condensate from the fluid storage device and feed water from the feed water source.

5. The system of claim 1, further comprising a temperature control valve that controls flow of steam and high temperature condensate from the steam source to the steam trap, wherein the temperature control valve moves from a closed position to an open position below a certain temperature.

6. The system of claim 5, wherein the temperature control valve can be set to move from the closed position to the open position at a steam temperature of between 150 to 250 degrees C.

7. The system of claim 1, wherein the fluid cooling mechanism cools the high temperature condensate to a temperature between about 10 degrees C and 80 degrees C.

8. A system for recovery and cooling of steam and high temperature condensate and disposed between a feed water source and a steam source comprising: a fluid circulation loop between the steam source and the feed water source, the fluid circulation loop including: a condenser configured to receive steam and high temperature condensate from the steam source, wherein steam is condensed to a liquid state in the condenser; a fluid cooling mechanism configured to cool the liquid at a first rate; a fluid storage device configured to accumulate cooled liquid from the fluid cooling mechanism, and subsequently release the cooled liquid back to the feed water source at a second rate.

9. (cancelled).

10. The system of claim 8, further comprising a pump configured to receive cooled fluid from the fluid storage device and push the cooled fluid to the feed water source.

11. The system of claim 8, further comprising a mixing tank disposed between the fluid circulation loop and the feed water source configured for integrating condensed liquid from the fluid storage device and feed water from the feed water source.

12. The system of claim 8, further comprising at least one valve disposed in the fluid circulation loop between the steam source and the condenser that allow steams flow from the steam source to the condenser.

13. The system of claim 8, wherein the fluid cooling mechanism cools the condensed liquid to a temperature between about 10 degrees C and 80 degrees C.

14. A method for recovery and cooling of steam and high temperature condensate, including operating a system disposed between a feed water source and a steam source, wherein the system may be operated in a first mode or a second mode, wherein said first mode comprises: circulating a mixture of steam and high temperature condensate from the steam source through a first fluid circulation loop to a steam trap; removing high temperature condensate from the steam source in the steam trap; receiving condensate from the steam trap in a fluid cooling mechanism and cooling the condensate at a first rate; accumulating cooled condensate in a fluid storage device; and releasing the cooled condensate from the fluid storage device back to the feed water source at a second rate; and wherein said second mode comprises:

22 circulating steam and high temperature condensate from a steam source through a second fluid circulation loop to a condenser; . condensing the steam; receiving liquid from the condenser in a fluid cooling mechanism and cooling the liquid at a first rate; accumulating cooled liquid in a fluid storage device; and releasing the cooled liquid from the fluid storage device back to the feed water source at a second rate.

15. The method of claim 14, wherein operating in a first mode further comprises opening a temperature control valve disposed in the first fluid circulation loop between the steam source and the steam trap at between 150 to 250 degrees C, wherein the mixture of steam and condensate from the steam source is circulated to the steam trap.

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