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JP-2026076116-A - Thermal integration systems and methods for gas capture systems

JP2026076116AJP 2026076116 AJP2026076116 AJP 2026076116AJP-2026076116-A

Abstract

[Problem] To provide a system and method for thermal integration for a gas capture system. [Solution] The system includes a fuel heating system having a first heat exchanger. The first heat exchanger is fluidly coupled to a steam turbine system, a gas turbine system, a carbon capture system, and a heat recovery steam generator (HRSG). The first heat exchanger is configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The first heat exchanger is also configured to receive fuel. The first heat exchanger is also configured to place steam with the fuel in a first heat exchange relationship to produce a first heating fuel and a first cooling steam. The first heat exchanger is also configured to send the first cooling steam to the carbon capture system. The first heat exchanger is also configured to send the first heating fuel to a gas turbine system, a duct burner, or a combination thereof. [Selection Diagram] Figure 1

Inventors

  • ナグマントリ、ラマン ヴェンカタ サティア ロヴァ
  • マーフィー、ピーター ジョン
  • マンダパカ、スレーシュ ヴェンカタ ジョギ ジャナキ
  • ラメシュ、アナンタ
  • カルッパサミ、サラヴァナクマール

Assignees

  • ジーイー・ベルノバ・テクノロジー・ゲーエムベーハー

Dates

Publication Date
20260511
Application Date
20251002
Priority Date
20241023

Claims (15)

  1. A fuel heating system (16) comprising a first heat exchanger (152), wherein the first heat exchanger (152) is fluidly coupled to a steam turbine system (64), a gas turbine system (12), a carbon capture system (100), and a heat recovery steam generator (HRSG) (66), and the first heat exchanger (152) The system is configured to receive steam (116) from the HRSG (66), the steam turbine system (64), or a combination thereof. It is configured to receive fuel (114), The steam (116) is configured to generate a first heating fuel and a first cooling steam in a first heat exchange relationship with the fuel (114), The first cooling steam is configured to be sent to the carbon capture system (100), The first heated fuel is configured to be delivered to one or more fuel injection positions of the gas turbine system (12), the duct burner (83) of the HRSG (66), or a combination thereof. Fuel heating system (16) A system equipped with these features.
  2. The system according to claim 1, wherein the first heat exchanger (152) is configured to receive the steam (116) from the intersection line (154) between the intermediate-pressure steam turbine (84) and the low-pressure steam turbine (86) of the steam turbine system (64).
  3. The system according to claim 1, wherein the fuel heating system (16) comprises a second heat exchanger (170) fluidly coupled to the first heat exchanger (152), the gas turbine system (12), the duct burner (83), the HRSG (66), or a combination thereof.
  4. The second heat exchanger (170) It is configured to receive the first cooling steam from the first heat exchanger (152), It is configured to receive the first heating fuel from the first heat exchanger (152), The first cooling steam is configured to generate a second heating fuel and a second cooling steam in a second heat exchange relationship with the first heating fuel. The second cooling steam is configured to be sent to the carbon capture system (100), The second heating fuel is configured to be supplied to the gas turbine system (12), the duct burner (83), or a combination thereof. The system according to claim 3.
  5. The first heat exchanger (152) It is configured to receive water (87) from the low-pressure drum (79) of the HRSG (66), The system is configured to receive steam (116) from the HRSG (66), the steam turbine system (64), or a combination thereof. The steam (116) is configured to generate a first heated feedwater and a second cooling steam in a second heat exchange relationship with the feedwater (87). The first heated water supply is configured to be sent to the second heat exchanger (170), The second cooling steam is configured to be sent to the carbon capture system (100), The system according to claim 3.
  6. The second heat exchanger (170) It is configured to receive the first heated feedwater from the first heat exchanger (152), It is configured to receive the aforementioned fuel (114), The first heated feedwater is configured to generate a second heated feedwater and a second heated fuel in a third heat exchange relationship with the fuel (114), The second heated water supply is configured to be sent to the low-pressure drum (79), The second heating fuel is configured to be supplied to the gas turbine system (12), the duct burner (83), or a combination thereof. The system according to claim 5.
  7. The water supply (87) is transferred from the low-pressure drum (79) to the high-pressure economizer (73) of the HRSG (66) via the first line (89). The system according to claim 5, further comprising a pump (85) configured to transfer the water supply (87) from the low-pressure drum (79) to the medium-pressure economizer (77) of the HRSG (66) via a second line (91).
  8. The system according to claim 7, wherein the first heat exchanger (152) is configured to receive the water supply (87) from the first line (89).
  9. The steam turbine comprises one or more lines (237) coupled to a high-pressure steam turbine (82), an intermediate-pressure steam turbine (84), or a combination thereof, wherein the one or more lines (237) A first inlet line connected to the inlet portion (240) of the high-pressure steam turbine (82), A first outlet line connected to the outlet portion (244) of the high-pressure steam turbine (82), A second inlet line connected to the inlet portion (248) of the aforementioned intermediate-pressure steam turbine (84), A second outlet line connected to the outlet portion (252) of the aforementioned intermediate-pressure steam turbine (84), The system according to claim 2, comprising either a combination thereof or a combination thereof.
  10. The system according to claim 9, wherein the first outlet line is configured to transfer the steam (116) from the high-pressure steam turbine (82) to the reheater (254), and the second inlet line is configured to transfer the steam (116) from the reheater (254) to the intermediate-pressure steam turbine (84).
  11. The system according to claim 9, comprising a controller (22) having memory (122) and a processor (120), and one or more valves (204) configured such that the first inlet line, the first outlet line, the second inlet line, the second outlet line, or a combination thereof, regulates the flow of steam (116) to the first heat exchanger (152), wherein the controller (22) is configured to selectively actuate the one or more valves (204).
  12. The system according to claim 1, wherein the first heat exchanger (152) is configured to selectively receive the steam (116) from a plurality of extraction positions via a plurality of valves (204) controlled by a controller (22), the plurality of extraction positions including at least three of the following: the low-pressure section (74) of the HRSG (66), the intermediate-pressure section (72) of the HRSG (66), the high-pressure section (70) of the HRSG (66), the low-pressure steam turbine (86), the intermediate-pressure steam turbine (84), the high-pressure steam turbine (82), the crossing line (154) between the steam turbines (82, 84, 86) of the steam turbine system (64), or any combination thereof.
  13. Receiving steam (116) from a heat recovery steam generator (HRSG) (66), a steam turbine system (64), or a combination thereof to at least one heat exchanger (150) of the fuel heating system (16) (262), Receiving fuel (114) to at least one heat exchanger (150) (264), (266) Transferring heat from the steam (116) to the fuel (114) in the at least one heat exchanger (150) to generate heated fuel (118) and cooling steam (119), Sending the cooling steam (119) to the carbon capture system (100) (268), A method comprising delivering (270) the heated fuel (118) to one or more fuel injection locations of a gas turbine system (12), a duct burner (83) of the HRSG (66), or a combination thereof.
  14. The method according to claim 13, comprising capturing carbon dioxide ( CO₂ ) from air (96) and/or exhaust gas (62) from the gas turbine system (12), wherein capturing comprises using the cooling steam (119) during the desorption mode of the carbon capture system (100).
  15. The controller (22) In response to the gas turbine operating at full load, one or more valves (204) are controlled to direct the steam (116) from the cross line (154) to the first heat exchanger (152), In response to the gas turbine operating at partial load, the system is configured to control one or more valves (204) to allow the steam (116) to flow from one or more lines (237), Or configured to perform a combination thereof, The system according to claim 11.

Description

The subject matter disclosed herein generally relates to systems and methods for improving the efficiency of industrial plants having combustion systems and gas processing systems. Various undesirable gases pollute the atmosphere. Examples of undesirable gases include carbon oxides such as carbon dioxide ( CO₂ ) and carbon monoxide (CO) ( CO₂X₂ ), nitrogen oxides such as nitrogen dioxide ( NO₂) (NO₂X₂ ) , and/or sulfur oxides such as sulfur dioxide ( SO₂ ) ( SO₂X₂ ). Due to various regulations and environmental concerns regarding global warming, it is desirable to reduce undesirable gases in the atmosphere (e.g., CO₂ ). An industrial plant may include a combined cycle system comprising a gas turbine system that produces exhaust gases from the combustion of fuel, a heat recovery steam generator configured to produce steam from the heat of the exhaust gases, and a steam turbine system driven by the steam. The combined cycle system may include a gas treatment system to reduce undesirable gases. However, gas treatment systems can add costs and reduce plant efficiency. Therefore, it is necessary to improve the efficiency of gas treatment systems used in combined cycle systems to remove undesirable gases from the atmosphere and/or exhaust gases emitted into the atmosphere while maintaining the efficiency of the remaining subsystems used in the combined cycle system. Specific embodiments corresponding to the scope of the subject matter originally claimed are summarized below. These embodiments are not intended to limit the scope of the claimed embodiments, but rather to provide an overview of possible forms of the subject matter. Indeed, the claimed embodiments may encompass a variety of forms that may be similar to or different from the embodiments described below. In certain embodiments, the system includes a fuel heating system having a first heat exchanger. The first heat exchanger is fluidly coupled to a steam turbine system, a gas turbine system, a carbon capture system, and a heat recovery steam generator (HRSG). The first heat exchanger is configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The first heat exchanger is also configured to receive fuel. The first heat exchanger is also configured to place steam with the fuel in a first heat exchange relationship to produce a first heating fuel and a first cooling steam. The first heat exchanger is also configured to deliver the first cooling steam to the carbon capture system. The first heat exchanger is also configured to deliver the first heating fuel to one or more fuel injection locations in the gas turbine system, a duct burner in the HRSG, or a combination thereof. In certain embodiments, the system includes a gas turbine system, a heat recovery steam generator (HRSG), a steam turbine system, a carbon capture system, and a fuel heating system. The fuel heating system includes a first heat exchanger. The first heat exchanger is configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The first heat exchanger is also configured to receive fuel. The first heat exchanger is also configured to transfer heat from the steam to the fuel to produce a first heated fuel and a first cooling steam. The first heat exchanger is also configured to deliver the first cooling steam to the carbon capture system. The first heat exchanger is also configured to deliver the first heated fuel to one or more fuel injection locations in the gas turbine system, a duct burner in the HRSG, or a combination thereof. In certain embodiments, the method includes receiving steam from a heat recovery steam generator (HRSG), a steam turbine system, or a combination thereof, to at least one heat exchanger in a fuel heating system. The method also includes receiving fuel to at least one heat exchanger. The method also includes transferring heat from the steam to the fuel in at least one heat exchanger to produce heated fuel and cooling steam. The method also includes sending the cooling steam to a carbon capture system. The method also includes sending the heated fuel to one or more fuel injection locations in a gas turbine system, a duct burner in an HRSG, or a combination thereof. These and other features, aspects and advantages of the techniques disclosed herein will be better understood by reading the following descriptions of embodiments for carrying out the invention with reference to the accompanying drawings, where similar reference numerals throughout the drawings represent similar parts. This is a block diagram of one embodiment of a combined cycle system having a fuel heating system according to the embodiments described herein.This is a block diagram of one embodiment of a composite cycle system having a fuel heating system having a heat exchanger, according to embodiments described herein.This is a block diagram of one embodiment of a composite cycle system having a fuel heating system having two he