Liquid fuel system for a turbomachine

A liquid fuel system for a turbomachine, the liquid fuel system comprising:

• an accessory system having a flow divider, wherein the flow divider includes an input line and a plurality of outlet lines each fluidly coupled to a combustion can of a plurality of combustion cans in a combustion section;
• a mixing unit disposed upstream of the flow divider and in fluid communication with the input line;
• a fuel selection unit disposed upstream of the mixing unit;
• a plurality of liquid fuel supply systems, each liquid fuel supply system fluidly coupled to fuel selection unit;
• an aqueous ammonia supply system fluidly coupled to the mixing unit;
• and
• a controller communicatively coupled to the fuel selection unit, the mixing unit, and the plurality of liquid fuel supply systems, the controller comprising memory and one or more processors, the memory storing instructions that when executed by the one or more processors cause the liquid fuel system to perform operations including:
• providing two or more liquid fuels from the plurality of liquid fuel supply systems to the fuel selection unit, wherein the two or more liquid fuels comprise a first liquid fuel from a first liquid fuel supply system of the plurality of liquid fuel supply systems and a second liquid fuel from a second liquid fuel supply system of the plurality of liquid fuel supply systems, the second liquid fuel having a different chemical composition than the first liquid fuel;
• selecting, within the fuel selection unit, a liquid fuel from the two or more liquid fuels;
• providing the selected liquid fuel to the mixing unit;
• providing aqueous ammonia from the aqueous ammonia supply system to the mixing unit;
• mixing, with the mixing unit, the selected liquid fuel and the aqueous ammonia to create the liquid fuel mixture;
• and
• providing the liquid fuel mixture to each combustion can of the plurality of combustion cans in the combustion section of the turbomachine.

A method of supplying a liquid fuel mixture to a combustion section of a turbomachine, the method comprising:

• providing two or more liquid fuels from a plurality of liquid fuel supply systems to a mixing unit, wherein providing the two or more liquid fuels to the mixing unit comprises:
• providing a first liquid fuel from a first liquid fuel supply system of the plurality of liquid fuel supply systems, and
• providing a second liquid fuel from a second liquid fuel supply system of the plurality of liquid fuel supply systems, the second liquid fuel having a different chemical composition than the first liquid fuel;
• mixing, with the mixing unit, the two or more liquid fuels to create the liquid fuel mixture;
• and
• providing the liquid fuel mixture to an accessory system having a flow divider, wherein the flow divider includes an input line and a plurality of outlet lines each fluidly coupled to a combustion can of a plurality of combustion cans in the combustion section.