Apparatus, method, and solvent for cleaning turbine components

Patent metadata

Field	Value
Publication number	US-9567554-B2
Application number	US-201414152335-A
Country	US
Kind code	B2
Filing date	Jan 10, 2014
Priority date	Jan 10, 2014
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A cleaning method and a cleaning fluid are provided. The cleaning method includes accessing a plurality of turbine components attached to a turbine assembly, the turbine assembly being a portion of a turbomachine, positioning at least one cleaning vessel over at least one of the turbine components, forming a liquid seal with a sealing bladder, providing a cleaning fluid to the cleaning vessel, and draining the cleaning fluid from the cleaning vessel. The cleaning fluid includes a carrier fluid and a solvent additive for removing fouling material from the turbine component. An alternative cleaning method is also provided.

First claim

What is claimed is:

1. A method for cleaning a gas turbine, comprising:
(a) accessing a plurality of turbine components attached to a turbine assembly, the turbine assembly being a portion of a turbomachine;
(b) disposing at least one of the plurality of turbine components at least partially in a cleaning vessel;
(c) providing a cleaning fluid to the cleaning vessel; and
(d) separating the at least one of the plurality of turbine components from the cleaning fluid in the cleaning vessel;
wherein the cleaning fluid comprises a carrier fluid and a solvent additive for removing fouling material from the turbine component.

2. The method of claim 1 , wherein disposing the at least one of the plurality of turbine components at least partially in the cleaning vessel includes:
positioning the cleaning vessel over the at least one of the plurality of turbine components; and
forming a liquid seal with a sealing bladder, and
wherein separating the at least one of the plurality of turbine components from the cleaning fluid in the cleaning vessel includes draining the cleaning fluid from the cleaning vessel.

3. The method of claim 1 , wherein the fouling material includes a petrochemical film.

4. The method of claim 1 , further comprising spraying the at least one of the plurality of turbine components with a fluid to remove loose debris prior to disposing the at least one of the plurality of turbine components at least partially in the cleaning vessel.

5. The method of claim 2 , further comprising:
providing an aqueous solution to the cleaning vessel to remove the cleaning fluid from the at least one of the plurality of turbine components; and
draining the aqueous solution from the cleaning vessel.

6. The method of claim 5 , further comprising rinsing the at least one of the plurality of turbine components with water to remove the aqueous solution from the at least one of the plurality of turbine components.

7. The method of claim 1 , further comprising applying a dry corrosion inhibitor over the at least one of the plurality of turbine components.

8. The method of claim 1 , wherein disposing the at least one of the plurality of turbine components at least partially in the cleaning vessel includes:
rotating the plurality of turbine components to at least partially immerse the plurality of turbine components in the cleaning fluid in the cleaning vessel.

9. The method of claim 8 , further comprising:
removing the turbine assembly from the turbomachine; and
positioning the cleaning vessel below the turbine assembly.

10. The method of claim 8 , further comprising:
providing an aqueous solution in a rinsing vessel;
rotating the plurality of turbine components to at least partially immerse the plurality of turbine components in the aqueous solution in the rinsing vessel to remove the cleaning fluid from the plurality of turbine components; and
separating the plurality of turbine components from the aqueous solution in the rinsing vessel.

11. The method of claim 10 , further comprising rinsing the plurality of turbine components with water to remove the aqueous solution from the plurality of turbine components.

12. The method of claim 1 , further comprising
the solvent additive removing the fouling material from the at least one of the plurality of turbine components.

13. The method of claim 1 , wherein the cleaning fluid comprises between 1% and 50% by weight of the solvent additive.

14. The method of claim 1 , wherein the carrier fluid comprises a petrochemical distillate.

15. The method of claim 14 , wherein the petrochemical distillate is selected from the group consisting of naphtha, heavy aromatic naphtha, kerosene, and diesel.

16. The method of claim 1 , wherein the solvent additive comprises a calcium long chain alkyl phenate sulphide.

17. The method of claim 16 , wherein the calcium long chain alkyl phenate sulphide further comprises between about 8.7% by weight and about 9.7% by weight calcium, and between about 2.75% by weight and about 3.75% by weight sulfur.

18. The method of claim 1 , wherein the solvent additive comprises a mixture of calcium alkyl phenol sulphide and polyolefin phosphorosulphide.

19. The method of claim 18 , wherein the mixture of calcium alkyl phenol sulphide and polyolefin phosphorosulphide further comprises between about 1.1% by weight and about 2.1% by weight calcium, between about 0.5% by weight and about 1.5% by weight phosphorus, and between about 2.3% by weight and about 3.3% by weight sulfur.

20. The method of claim 1 , including contacting the at least one of the plurality of turbine components disposed at least partially in the cleaning vessel with the cleaning fluid while the at least one of the plurality of turbine components remains attached to the turbine assembly.

Assignees

• Gen Electric

Inventors

• Ekanayake Sanji
• Pabla Surinder Singh
• Kalaga Murali Krishna
• Scipio Alston Ilford
• Dean El Ishmael

Classifications

• C11D11/0041 Primary

  Chemistry & Metallurgy · mapped topic

• C11D7/34

  containing sulfur · CPC title

• C11D3/3749

  Polyolefins; Halogenated polyolefins; Natural or synthetic rubber; Polyarylolefins or halogenated polyarylolefins · CPC title

• B08B3/04 Primary

  Cleaning involving contact with liquid · CPC title

• B08B17/025

  Prevention of fouling with liquids by means of devices for containing or collecting said liquids · CPC title