US-12618364-B1 - System and method of heat integration for a gas capture system

Abstract

A system includes an intake heating system having one or more heat exchangers. The one or more heat exchangers are fluidly coupled to a steam turbine system, a gas turbine system, a carbon capture system, and a heat recovery steam generator (HRSG). The one or more heat exchangers are configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The one or more heat exchangers are also configured to receive an air. The one or more heat exchangers are also configured to place the steam in a heat exchange relationship with the air to produce a heated air and a cooled steam. The one or more heat exchangers are also configured to send the cooled steam to the carbon capture system. The one or more heat exchangers are also configured to send the heated air to one or more injection locations of the gas turbine system.

Inventors

• Raman Venkata Satya Lova Nagumantri
• Peter John Murphy
• Srikrishnan Ramchandran
• Muneeswara Babu Ummiti

Assignees

• GE INFRASTRUCTURE TECHNOLOGY LLC

Dates

Publication Date

20260505

Application Date

20241223

Claims (20)

1. 1 . A system, comprising: an intake heating system comprising one or more heat exchangers, wherein the one or more heat exchangers are configured to fluidly couple to a steam turbine system, a gas turbine system, a carbon capture system, and a heat recovery steam generator (HRSG), wherein the one or more heat exchangers are configured to: receive steam from the HRSG, the steam turbine system, or a combination thereof; receive an air; place the steam in a heat exchange relationship with the air to produce a heated air and a cooled steam; send the cooled steam to the carbon capture system; and send the heated air to an injection location of the gas turbine system; and a controller comprising a memory and one or more processors, wherein the controller is configured to: adjust one or more parameters of the steam to: maintain a first temperature of the heated air between a first lower temperature threshold and a first upper temperature threshold; and maintain a second temperature of the cooled steam between a second lower temperature threshold and a second upper temperature threshold.
2. 2 . The system of claim 1 , wherein the one or more heat exchangers are configured to receive the steam from a cross-over line between an intermediate pressure steam turbine of the steam turbine system and a low pressure steam turbine of the steam turbine system.
3. 3 . The system of claim 1 , comprising one or more sensors configured to monitor one or more parameters of the cooled steam sent to the carbon capture system.
4. 4 . The system of claim 2 , wherein the controller is configured to: control one or more actuators to cause the steam to flow from the cross-over line to the one or more heat exchangers in response to the gas turbine system operating at a full load; control the one or more actuators to cause the steam to flow from one or more lines coupled to a high pressure steam turbine of the steam turbine system, the intermediate pressure steam turbine, or a combination thereof, in response to the gas turbine system operating at a part load; or a combination thereof.
5. 5 . The system of claim 4 , wherein the one or more lines comprise: a first inlet line coupled to an inlet portion of the high pressure steam turbine; a first outlet line coupled to an outlet portion of the high pressure steam turbine; a second inlet line coupled to an inlet portion of the intermediate pressure steam turbine; a second outlet line coupled to an outlet portion of the intermediate pressure steam turbine; or a combination thereof.
6. 6 . The system of claim 5 , wherein the first outlet line is configured to transfer the steam from the high pressure steam turbine to a reheater, and the second inlet line is configured to transfer the steam from the reheater to the intermediate pressure steam turbine.
7. 7 . The system of claim 1 , wherein the one or more heat exchangers are configured to selectively receive the steam from a plurality of extraction locations via a plurality of valves controlled by the controller, wherein the plurality of extraction locations comprise a low pressure section of the HRSG, an intermediate pressure section of the HRSG, a high pressure section of the HRSG, a low pressure steam turbine, an intermediate pressure steam turbine, a high pressure steam turbine, a crossover line between steam turbines of the steam turbine system, or any combination thereof.
8. 8 . A system, comprising: a gas turbine system; a heat recovery steam generator (HRSG); a steam turbine system; a carbon capture system; and an intake heating system comprising one or more heat exchangers, wherein the one or more heat exchangers are configured to: receive steam from the HRSG, the steam turbine system, or a combination thereof; receive an air; place the steam in a heat exchange relationship with the air to produce a heated air and a cooled steam; send the cooled steam to the carbon capture system; and send the heated air to an injection location of the gas turbine system; and a controller comprising a memory and one or more processors, wherein the controller is configured to: adjust one or more parameters of the steam to: maintain a first temperature of the heated air between a first lower temperature threshold and a first upper temperature threshold; and maintain a second temperature of the cooled steam between a second lower temperature threshold and a second upper temperature threshold.
9. 9 . The system of claim 8 , comprising one or more sensors configured to monitor one or more parameters of the cooled steam sent to the carbon capture system.
10. 10 . The system of claim 8 , wherein the controller is configured to adjust one or more parameters of the heated air sent to the injection location.
11. 11 . The system of claim 8 , wherein adjusting the one or more parameters comprises: controlling one or more actuators to cause the steam to flow from a cross-over line to the one or more heat exchangers, wherein the cross-over line extends from an intermediate pressure steam turbine of the steam turbine system and a low pressure steam turbine of the steam turbine system; controlling the one or more actuators to cause the steam to flow from one or more lines coupled to a high pressure steam turbine of the steam turbine, the intermediate pressure steam turbine, or a combination thereof, to the one or more heat exchangers; or a combination thereof.
12. 12 . The system of claim 11 , wherein the one or more lines comprise: a first inlet line coupled to an inlet portion of the high pressure steam turbine; a first outlet line coupled to an outlet portion of the high pressure steam turbine; a second inlet line coupled to an inlet portion of the intermediate pressure steam turbine; a second outlet line coupled to an outlet portion of the intermediate pressure steam turbine; or a combination thereof.
13. 13 . The system of claim 12 , wherein the first outlet line is configured to transfer the steam from the high pressure steam turbine to a reheater, and the second inlet line is configured to transfer the steam from the reheater to the intermediate pressure steam turbine.
14. 14 . The system of claim 13 , wherein the first inlet line, the first outlet line, the second inlet line, the second outlet line, or the combination thereof, comprises one or more valves configured to regulate flow of the steam to the one or more heat exchangers, wherein the controller is configured to selectively actuate the one or more valves.
15. 15 . The system of claim 8 , wherein the one or more heat exchangers are configured to selectively receive the steam from a plurality of extraction locations via a plurality of valves controlled by the controller, wherein the plurality of extraction locations comprise a low pressure section of the HRSG, an intermediate pressure section of the HRSG, a high pressure section of the HRSG, a low pressure steam turbine, an intermediate pressure steam turbine, a high pressure steam turbine, a crossover line between steam turbines of the steam turbine system, or any combination thereof.
16. 16 . A method, comprising: receiving steam from a heat recovery steam generator (HRSG), a steam turbine system, or a combination thereof, into at least one heat exchanger of an intake heating system; receiving an air into the at least one heat exchanger; transferring heat from the steam to the air in the at least one heat exchanger to produce a heated air and a cooled steam; sending the cooled steam to a carbon capture system; sending the heated air to an injection location of a gas turbine system; and adjusting, via a controller, one or more parameters of the steam to: maintain a first temperature of the heated air between a first lower temperature threshold and a first upper temperature threshold; and maintain a second temperature of the cooled steam between a second lower temperature threshold and a second upper temperature threshold.
17. 17 . The method of claim 16 , comprising capturing a carbon dioxide (CO 2 ) from the air and/or an exhaust gas from the gas turbine system, wherein capturing comprises using the cooled steam during a desorption mode of the carbon capture system.
18. 18 . The system of claim 11 , wherein adjusting the one or more parameters of the steam comprises: controlling the one or more actuators to cause the steam to flow from the cross-over line to the one or more heat exchangers in response to the gas turbine operating at a full load; and controlling the one or more actuators to cause the steam to flow from the one or more lines to the one or more heat exchangers in response to the gas turbine operating at a part load.
19. 19 . The system of claim 1 , wherein the injection location comprises an intake of the gas turbine system.
20. 20 . The system of claim 1 , further comprising at least one of: the steam turbine system; the gas turbine system; the carbon capture system; or the HRSG.

Description

BACKGROUND The subject matter disclosed herein generally relates to a system and method for improving efficiency of an industrial plant having a combustion system and a gas treatment system. Various undesirable gases pollute the atmosphere. For example, the undesirable gases may include carbon oxides (COX) such as carbon dioxide (CO2) and carbon monoxide (CO), nitrogen oxides (NOX) such as nitrogen dioxide (NO2), and/or sulfur oxides (SOX) such as sulfur dioxide (SO2). With various regulations and environmental concerns regarding global warming, it would be desirable to reduce the undesirable gases (e.g., CO2) in the atmosphere. An industrial plant may include a combined cycle system having a gas turbine system generating exhaust gas from combustion of a fuel, a heat recovery steam generator configured to generate steam from heat of the exhaust gas, and a steam turbine system driven by the steam. The combined cycle system may include a gas treatment system for reducing the undesirable gases; however, the gas treatment system may add costs and reduce efficiency of the plant. As such, there is a need for improving the efficiency of the gas treatment system used in the combined cycle system to remove undesirable gases from the atmosphere and/or from exhaust gases discharged into the atmosphere while maintaining an efficiency of remaining subsystems used in combined cycle system. BRIEF DESCRIPTION Certain embodiments commensurate in scope with the originally claimed subject matter are summarized below. These embodiments are not intended to limit the scope of the claimed embodiments, but rather these embodiments are intended only to provide a brief summary of possible forms of the subject matter. Indeed, the presently claimed embodiments may encompass a variety of forms that may be similar to or different from the embodiments set forth below. In certain embodiments, a system includes an intake heating system having one or more heat exchangers. The one or more heat exchangers are fluidly coupled to a steam turbine system, a gas turbine system, a carbon capture system, and a heat recovery steam generator (HRSG). The one or more heat exchangers are configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The one or more heat exchangers are also configured to receive an air. The one or more heat exchangers are also configured to place the steam in a heat exchange relationship with the air to produce a heated air and a cooled steam. The one or more heat exchangers are also configured to send the cooled steam to the carbon capture system. The one or more heat exchangers are also configured to send the heated air to one or more injection locations of the gas turbine system. In certain embodiments, a system includes a gas turbine system, a heat recovery steam generator (HRSG), a steam turbine system, a carbon capture system, and an intake heating system having one or more heat exchangers. The one or more heat exchangers are configured to receive steam from the HRSG, the steam turbine system, or a combination thereof. The one or more heat exchangers are also configured to receive an air. The one or more heat exchangers are also configured to place the steam in a heat exchange relationship with the air to produce a heated air and a cooled steam. The one or more heat exchangers are also configured to send the cooled steam to the carbon capture system. The one or more heat exchangers are also configured to send the heated air to one or more injection locations of the gas turbine system. In certain embodiments, a method includes receiving steam from a heat recovery steam generator (HRSG), a steam turbine system, or a combination thereof, into at least one heat exchanger of an intake heating system. The method also includes receiving air into the at least one heat exchanger. The method also includes transferring heat from the steam to the air in the at least one heat exchanger to produce a heated air and a cooled steam. The method also includes sending the cooled steam to a carbon capture system. The method also includes sending the heated air to one or more injection locations of a gas turbine system. BRIEF DESCRIPTION OF THE DRAWINGS These and other features, aspects, and advantages of the presently disclosed techniques will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein: FIG. 1 is a block diagram of an embodiment of a combined cycle system having an intake heating system, in accordance with embodiments described herein; FIG. 2 is a block diagram of an embodiment of a steam turbine having a plurality of tap-off locations for transferring steam to the intake heating system, in accordance with embodiments described herein; and FIG. 3 is an embodiment of a process for operating the intake heating system, in accordance with embodiments describe