System and method of heat integration for a gas capture system

A system, comprising:

• a gas turbine system;
• a heat recovery steam generator (HRSG);
• a steam turbine system;
• a carbon capture system;
• a fuel heating system comprising a first heat exchanger, wherein the first heat exchanger is configured to:
• receive steam from the HRSG, the steam turbine system, or a combination thereof;
• receive a fuel;
• transfer heat from the steam to the fuel to produce a heated fuel and a cooled steam;
• send the cooled steam to the carbon capture system;
• and
• send the heated fuel to one or more fuel injection locations of the gas turbine system, a duct burner of the HRSG, or a combination thereof;
• 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;
• regulate a fuel temperature of the heated fuel between a first lower threshold and a first upper threshold based on adjusting the one or more parameters of the steam;
• and
• concurrently regulate a steam temperature of the cooled steam between a second lower threshold and a second upper threshold based on adjusting the one or more parameters.

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 a fuel heating system;
• receiving a fuel into the at least one heat exchanger;
• transferring heat from the steam to the fuel in the at least one heat exchanger to produce a heated fuel and a cooled steam;
• sending the cooled steam to a carbon capture system;
• and
• sending the heated fuel to one or more fuel injection locations of a gas turbine system, a duct burner of the HRSG, or a combination thereof.