Systems for supplying liquid fuel emulsion to a combustion system of a gas turbine

Patent metadata

Field	Value
Publication number	US-11434817-B2
Application number	US-201816154815-A
Country	US
Kind code	B2
Filing date	Oct 9, 2018
Priority date	Oct 10, 2017
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

Liquid fuel supply system (12) for a combustion system (14), in particular a gas turbine, including at least one storage tank (16) for liquid fuel supplying at least one injector (34) connected to a combustion chamber (32) of the combustion system (14), said liquid fuel supply system (12) including a first piping section (18) disposed downstream of the tank (16) and a second piping section (20) disposed downstream of the first piping section (18) and upstream of fuel nozzle (34) in each combustion chamber (32), said first piping section (18) including at least one pressurizing means (22), and at least one injecting point or entering (24) for a water-soluble product, and the second piping section (20) including a mixing and distribution flow device (26) configured to create an emulsion and distributing the emulsion flow rate to at least one piping (28) connected to said nozzle (34).

First claim

What is claimed is:

1. A liquid fuel supply system for a combustion system, comprising at least one storage tank for liquid fuel capable of supplying the liquid fuel to at least one nozzle connected to a combustion chamber of the combustion system, the liquid fuel supply system comprising:
a first piping section disposed downstream of the tank and a second piping section disposed downstream of the first piping section and upstream of the at least one nozzle, the first piping section having a first line that includes a pressurizing means and an injection point of water disposed downstream of the pressurizing means, the water and the liquid fuel forming a mixture within the first line downstream of the injection point;
wherein the second piping section comprises a first mixing device, wherein the first mixing device is configured to create an emulsion and spread an emulsion flow to at least one piping connected to the at least one nozzle;
wherein a second mixing device is disposed on the first line downstream of the injection point and upstream of the first mixing device such that all of the mixture travels through the second mixing device before entering the first mixing device; and
wherein the second mixing device is configured to provide an input flow rate regime to the first mixing device having a Reynolds number greater than or equal to 2000 such that a variability of a concentration of the water in the mixture is at maximum +/−1-30% between each piping in the at least one piping.

2. The liquid fuel supply system according to claim 1 , wherein the input flow rate regime has a Reynolds number between 2000 and 3000.

3. The liquid fuel supply system according to claim 1 , wherein, the input flow rate regime has a Reynolds number greater than or equal to 3000.

4. The liquid fuel supply system according to claim 1 , wherein the second piping section comprises a shut off device upstream of a nozzle of the at least one nozzle.

5. The liquid fuel supply system according to claim 1 , wherein the at least one piping comprises a plurality of pipes, wherein the combustion chamber is a first combustion chamber in a plurality of combustion chambers, and wherein each pipe in the plurality of pipes feeds a respective combustion chamber of the plurality of combustion chambers through a respective at least one nozzle, the plurality of pipes being connected to the first mixing device.

6. The liquid fuel supply system according to claim 1 , wherein the water comprises a volume between 1% and 10% of a total flow rate in the first piping section.

7. An electricity generation system comprising:
a combustion system; and
a liquid fuel supply system comprising at least one storage tank for liquid fuel capable of supplying a liquid fuel to at least one nozzle connected to a combustion chamber of the combustion system, the liquid fuel supply system comprising a first piping section disposed downstream of the at least one tank and a second piping section disposed downstream of the first piping section and upstream of the at least one nozzle, the first piping section having a first line that includes a pressurizing means and an injection point of water disposed downstream of the pressurizing means, the water and the liquid fuel forming a mixture within the first line downstream of the injection point;
wherein the second piping section comprises a first mixing device, wherein the first mixing device is configured to create an emulsion and spread an emulsion flow to at least one piping connected to the at least one nozzle;
wherein a second mixing device is disposed on the first line downstream of the injection point and upstream of the first mixing device such that all of the mixture travels through the second mixing device before entering the first mixing device; and
wherein the second mixing device is configured to provide an input flow rate regime to the first mixing device having a Reynolds number greater than or equal to 2000 such that a variability of a concentration of the water in the mixture is at maximum +/−30% between each piping in the at least one piping.

8. The electricity generation system according to claim 7 , wherein the comprises a volume between 1% and 50% of a total flow rate in the first piping section.

9. A liquid fuel supply system for a gas turbine comprising:
a first piping section having a first line;
a second piping section extending from and fluidly coupled to the first piping section;
a fuel storage tank fluidly coupled to the first line of the first piping section for supplying a liquid fuel to the liquid fuel supply system;
a pump disposed downstream from the fuel storage tank; an injection point of water downstream of the pump and fluidly coupled to the first line of the first piping section, the water and the liquid fuel forming a mixture within the first line;
a first mixing device disposed on the second piping section downstream from the injection point and the pump, wherein the first mixing device is fluidly coupled to the first line such that all of the water from the injection point and all the liquid fuel from the fuel supply system enter the first mixing device;
a plurality of nozzles each in fluid communication with a respective combustion chamber of a plurality of combustion chambers; and
a plurality of piping each extending from the first mixing device to a respective nozzle of the plurality of nozzles, wherein the first mixing device is configured to provide stable emulsion and distribution to each nozzle of the plurality of nozzles; and
a second mixing device disposed on the first line downstream of the injection point and upstream of the first mixing device such that all of the mixture travels through the second mixing device before entering the first mixing device;
wherein the second mixing device is configured to provide an input flow rate regime to the first mixing device having a Reynolds number greater than or equal to 2000 such that a variability of a concentration of the water in the mixture is at maximum +/−30% between each pipe in the plurality of pipes.

Assignees

• Gen Electric

Inventors

• Suleiman Baha
• Aboujaib Maher
• Montagne Pierre
• Glaser Paul Burchell
• Amancherla Sundar

Classifications

• F23D11/38

  Nozzles; Cleaning devices therefor · CPC title

• F02C3/24 Primary

  the fuel or oxidant being liquid at standard temperature and pressure · CPC title

• F23L7/002

  Supplying water · CPC title

• F02C3/30

  Adding water, steam or other fluids {for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C7/141, F02C7/30, F01D21/00, F01K21/04, F23D11/10 take precedence)} · CPC title

• F23R3/286

  having fuel-air premixing devices (F23R3/30 takes precedence) · CPC title