Claims
- 1. A method for reducing the amount of oxygen in an oxygen containing aqueous medium contained in a condensate system of a boiler system through the use of an oxygen scavenger which comprises adding to said aqueous medium an effective amount for the purpose of an oxygen scavenger comprising a hydrazine-free solution, said solution comprising a member selected from the group consisting of:
- benzoquinone, and
- napthoquinone
- 2. A method in accordance with claim 1 wherein said member is added in an amount of about 0.05 to 200 parts per million parts of said aqueous medium.
- 3. A method in accordance with claim 1 wherein said member is added in an amount of about 0.2 to 35 parts per million parts of said aqueous medium.
- 4. A method in accordance with claim 1 wherein said aqueous medium has an alkaline pH.
- 5. A method in accordance with claim 1 wherein said member is benzoquinone.
- 6. A method in accordance with claim 1 wherein said member is napthoquinone.
- 7. A method for reducing the amount of oxygen in an oxygen-containing feedwater to a boiler through the use of an oxygen scavenger, which comprises adding to said feedwater an effective amount for the purpose of an oxygen scavenger comprising a hydrazine-free solution, said solution comprising a member selected from the group consisting of:
- benzoquinone, and
- napthoquinone.
- 8. A method in accordance with claim 7 wherein said member is added in an amount of about 0.05 to 200 parts per million parts of said aqueous medium.
- 9. A method in accordance with claim 7 wherein said member is added in an amount of 0.2 to 35 parts per million parts of said aqueous medium.
- 10. A method in accordance with claim 7 wherein said aqueous medium has an alkaline pH.
- 11. A method in accordance with claim 7 wherein said member is benzoquinone.
- 12. A method in accordance with claim 7 wherein said member is napthoquinone.
- 13. A method for reducing the amount of oxygen in an oxygen containing aqueous medium comprising adding to said medium an effective amount for the purpose of an oxygen scavenger comprising a hydrazine-free solution comprising a member selected from the group consisting of napthoquinone and benzoquinone.
- 14. A method in accordance with claim 13 wherein said oxygen scavenger comprises napthoquinone.
- 15. A method in accordance with claim 13 wherein said oxygen scavenger comprises benzoquinone.
Parent Case Info
This is a continuation of U.S. Ser. No. 454,931, filed Jan. 3, 1983, now abandoned, which was a continuation of U.S. Ser. No. 144,723, filed Apr. 28, 1980, now abandoned.
US Referenced Citations (19)
Foreign Referenced Citations (10)
Number |
Date |
Country |
44-1813 |
Jan 1969 |
JPX |
45-13521 |
May 1970 |
JPX |
45-14201 |
May 1970 |
JPX |
49-27247 |
Jul 1974 |
JPX |
50-60489 |
May 1975 |
JPX |
53-32618 |
Dec 1975 |
JPX |
51-21661 |
Jul 1976 |
JPX |
51-93741 |
Aug 1976 |
JPX |
53-30659 |
Aug 1978 |
JPX |
53-93141 |
Aug 1978 |
JPX |
Non-Patent Literature Citations (1)
Entry |
The Merck Index 9th Edition, publ. by Merck & Co., Inc., Rahway, N.J., 1976, p. 635. |
Continuations (2)
|
Number |
Date |
Country |
Parent |
454931 |
Jan 1983 |
|
Parent |
144723 |
Apr 1980 |
|