Claims
- 1. A process for removing iron oxide deposits from a metallic surface of a boiler operating at a presssure of a least 1,000 psig, wherein said metallic surface is in contact with an aqueous system, comprising:
adding at least 300 ppb of an oxime to said aqueous system.
- 2. The process of claim 1 wherein the oxime is methyl ethyl ketoxime.
- 3. The process of claim 2 wherein the oxime is added to a feedpoint which will expose the said methyl ethyl ketoxime to a temperature between 30° C. to 320° C.
- 4. The process of claim 3 wherein the operating pressure of the boiler is at least 2,000 psig.
- 5. The process of claim 6 wherein the methyl ethyl ketoxime is added to the aqueous stream at a dosage of at least 600 ppb.
- 6. The process of claim 6 wherein dosage of methyl ethyl ketoxime is maintained for a period of at least four weeks.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part of application Ser. No. 09/287,709, filed on Apr. 7, 1999, which is a continuation-in-part of provisional application serial No. 60/081,259, filed on Apr. 9, 1998, both of which are hereby incorporated by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60081259 |
Apr 1998 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09287709 |
Apr 1999 |
US |
Child |
10176090 |
Jun 2002 |
US |