Claims
- 1. A corrosion inhibited composition consisting essentially of an aqueous alkanolamine solution employed in acid gas removal service and an inhibiting amount of a stannous salt or mixtures thereof, said inhibiting amount being about 0.01 to about 2.0 percent based upon the weight of said aqueous alkanolamine solution.
- 2. Composition claimed in claim 1 wherein the stannous salt is stannous tartrate.
- 3. Composition claimed in claim 1 wherein the stannous salt is stannous gluconate.
- 4. Composition claimed in claim 1 wherein the stannous salt is stannous chloride.
- 5. Composition claimed in claim 1 wherein the stannous salt is stannous acetate.
- 6. Composition claimed in claim 1 wherein the stannous salt is stannous fluoborate.
- 7. Method for inhibiting corrosion of metallic surfaces by an aqueous alkanolamine solution employed in acid gas removal service comprising adding to said aqueous alkanolamine solution an inhibiting amount of a stannous salt or mixtures thereof, said inhibiting amount being about 0.01 to about 2.0 percent based upon the weight of said aqueous alkanolamine solution.
- 8. Method claimed in claim 7 wherein said aqueous alkanolamine solution is an aqueous monoethanolamine system.
- 9. Method claimed in claim 7 wherein the stannous salt is stannous tartrate.
- 10. Method claimed in claim 7 wherein the stannous salt is stannous gluconate.
- 11. Method claimed in claim 7 wherein the stannous salt is stannous chloride.
- 12. Method claimed in claim 7 wherein the stannous salt is stannous acetate.
- 13. Method claimed in claim 7 wherein the stannous salt is stannous fluoborate.
Parent Case Info
This is a continuation, division of application Ser. No. 201,131 filed Nov. 22, 1971, (now U.S. Pat. No. 3,808,140) which in turn is a continuation-in-part of Ser. No. 54,595 filed July 13, 1970 now abandoned.
US Referenced Citations (3)
Divisions (1)
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Number |
Date |
Country |
Parent |
201131 |
Nov 1971 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
54595 |
Jul 1970 |
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