Solvent for cleaning turbine components

Patent metadata

Field	Value
Publication number	US-10179893-B2
Application number	US-201715397396-A
Country	US
Kind code	B2
Filing date	Jan 3, 2017
Priority date	Jan 10, 2014
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

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 cleaning fluid, comprising:
a distillate; and
a solvent additive including an alkyl phenolic sulfide, wherein the alkyl phenolic sulfide includes a mixture of calcium alkyl phenol sulfide and a polyolefin phosphorosulfide.

2. The cleaning fluid of claim 1 , including between 1% and 50% by weight of the solvent additive.

3. The cleaning fluid of claim 2 , including about 10% by weight of the solvent additive.

4. The cleaning fluid of claim 1 , wherein the distillate includes a petrochemical distillate.

5. The cleaning fluid of claim 4 , wherein the petrochemical distillate is selected from the group consisting of naphtha, heavy aromatic naphtha, kerosene, and diesel.

6. The cleaning fluid of claim 4 , wherein the petrochemical distillate includes heavy aromatic naphtha.

7. The cleaning fluid of claim 1 , wherein the distillate consists of heavy aromatic naphtha.

8. The cleaning fluid of claim 1 , wherein the alkyl phenolic sulfide includes a long chain alkyl phenate sulfide.

9. The cleaning fluid of claim 8 , wherein the long chain alkyl phenate sulfide includes a calcium long chain alkyl phenate sulfide.

10. The cleaning fluid of claim 9 , wherein the calcium long chain alkyl phenate sulfide further includes 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.

11. The cleaning fluid of claim 10 , further including a total base number of between about 225 to about 275 mg KOH/g.

12. The cleaning fluid of claim 10 , wherein the calcium long chain alkyl phenate sulfide further includes about 9.2% by weight calcium and about 3.25% by weight sulfur.

13. The cleaning fluid of claim 1 , wherein the mixture of the calcium alkyl phenol sulfide and the polyolefin phosphorosulfide further includes 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.

14. The cleaning fluid of claim 13 , wherein the mixture of the calcium alkyl phenol sulfide and the polyolefin phosphorosulfide further includes a total base number of between about 25 to about 75 mg KOH/g.

15. The cleaning fluid of claim 13 , wherein the mixture of the calcium alkyl phenol sulfide and the polyolefin phosphorosulfide further includes about 1.55% by weight and about 1.65% by weight calcium, between about 0.9% by weight and about 1.03% by weight phosphorus, and between about 2.4% by weight and about 3.2% by weight sulfur.

16. The cleaning fluid of claim 1 , wherein the solvent additive includes the property of removing fouling material from a turbine component immersed in the cleaning fluid.

Assignees

• Gen Electric

Inventors

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

Classifications

• B08B3/04 Primary

  Cleaning involving contact with liquid · CPC title

• C11D3/18

  Hydrocarbons {(C11D3/164 takes precedence)} · CPC title

• B08B3/02

  Cleaning by the force of jets or sprays · CPC title

• C11D11/0041 Primary

  Chemistry & Metallurgy · mapped topic

• C11D3/3749

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