Steam generator film cooling using produced water

Patent metadata

Field	Value
Publication number	US-9851096-B2
Application number	US-201213448293-A
Country	US
Kind code	B2
Filing date	Apr 16, 2012
Priority date	Apr 16, 2012
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

An exemplary steam generator assembly includes a wall. Produced water acts as film cooling to at least a portion of the wall.

First claim

We claim:

1. A steam generator assembly, comprising:
a combustor having a wall providing a combustion chamber, wherein the combustion chamber is axially extending and wherein within the combustion chamber a produced water acts as film cooling to at least a portion of a combustion chamber facing surface of the wall, wherein the produced water is an untreated water having a high mineral content and wherein the produced water comprises a film of produced water extending within the combustion chamber across at least a portion of the combustion chamber facing surface of the wall;
an igniter assembly for combusting a mixture of fuel and oxidizer, the igniter assembly disposed at a first axial end of the combustion chamber; and
an array of nozzles circumferentially distributed about the axis adjacent the igniter assembly to direct sprays of produced water radially outward toward the combustor wall.

2. The steam generator assembly of claim 1 , wherein the wall provides a cylindrical combustion chamber.

3. The steam generator assembly of claim 1 , wherein the steam generator vaporizes the produced water to generate steam.

4. The steam generator assembly of claim 1 , wherein the produced water is introduced such that the produced water separates the portion of the wall from combustion products during operation of the steam generator.

5. The steam generator assembly of claim 4 , wherein the produced water and the combustion products are present in the combustion chamber.

6. The steam generator assembly of claim 4 , wherein the produced water acting as film cooling and the combustion products are in direct contact in the combustion chamber.

7. The steam generator assembly of claim 1 , wherein the wall is configured such that the produced water film cooling the combustion chamber facing surface of the wall limits scale buildup on the wall.

8. A steam generator assembly, comprising:
a combustor wall defining at least a portion of an axially extending combustion chamber;
an igniter assembly for combusting a mixture of fuel and oxidizer, the igniter assembly disposed at a first axial end of the combustion chamber;
an array of nozzles circumferentially distributed about the axis adjacent the igniter assembly to direct sprays of produced water radially outward toward the combustor wall; and
an inlet that delivers produced water to the combustion chamber, the produced water providing film cooling within the combustion chamber to at least a portion of a combustion chamber facing surface of the combustor wall and during operation of the steam generator assembly the produced water is in direct contact with and separates combustion products from the at least a portion of the combustion chamber facing surface of the wall, wherein the produced water is an untreated water having a high mineral content.

9. The steam generator assembly of claim 8 , wherein the steam is mixed with products of combustion.

10. The steam generator assembly of claim 8 , wherein combustion within the combustion chamber vaporizes the produced water to form steam.

11. The steam generator assembly of claim 8 , wherein the combustion chamber is configured such that the produced water film cooling the combustor wall limits scale adhering to the combustor wall.

12. The steam generator assembly of claim 8 , wherein:
the combustor wall extends from the first end to an opposing second end to at least in part define the combustion chamber;
the combustion products propagate from the first end to the second end; and
the film cooling begins adjacent the first end.

13. A steam generator assembly comprising:
a combustor wall defining at least a portion of a combustion chamber;
an inlet that delivers produced water to the combustion chamber, the produced water providing film cooling within the combustion chamber to at least a portion of a combustion chamber facing surface of the combustor wall and during operation of the steam generator assembly the produced water is in direct contact with and separates combustion products from the at least a portion of the combustion chamber facing surface of the wall, wherein the produced water is an untreated water having a high mineral content; and
including a baffle that directs a flow of produced water along at least a portion of the combustion chamber facing surface of the combustor wall.

14. The steam generator assembly of claim 13 , wherein the steam is mixed with products of combustion.

15. The steam generator assembly of claim 13 , wherein combustion within the combustion chamber vaporizes the produced water to form steam.

16. The steam generator assembly of claim 13 , wherein the combustion chamber is configured such that the produced water film cooling the combustor wall limits scale adhering to the combustor wall.

17. A steam generator assembly comprising:
a combustor chamber defined at least in part by a wall, the wall having an inner surface within the combustion chamber, wherein a produced water acts as film cooling to at least a portion of the wall inner surface within the combustion chamber, wherein the produced water is an untreated water having a high mineral content; and
including a baffle that directs a flow of produced water along at least a portion of the combustion chamber facing surface of the combustor wall.

18. The steam generator assembly of claim 17 wherein the produced water directly contacts combustion products and separates the portion of the wall inner surface from the combustion products during operation of the steam generator assembly.

Assignees

• Vega John
• Mays Jeffrey A
• Gas Technology Inst

Inventors

• Vega John
• Mays Jeffrey A

Classifications

• F28F19/00

  Preventing the formation of deposits or corrosion, e.g. by using filters {or scrapers} · CPC title

• F22B1/02 Primary

  by exploitation of the heat content of hot heat carriers · CPC title

• F28C3/08

  with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) · CPC title

• F22B37/02

  applicable to more than one kind or type of steam boiler · CPC title