| US 7,381,319 B2 | ||
| Multi-amine neutralizer blends | ||
| Joel E. Lack, Sugar Land, Tex. (US); George G. Duggan, Katy, Tex. (US); and Michael J. Zetlmeisl, Katy, Tex. (US) | ||
| Assigned to Baker Hughes Incorporated, Houston, Tex. (US) | ||
| Filed on Aug. 31, 2004, as Appl. No. 10/930,876. | ||
| Claims priority of provisional application 60/500541, filed on Sep. 05, 2003. | ||
| Prior Publication US 2005/0051462 A1, Mar. 10, 2005 | ||
| Int. Cl. C10G 7/10 (2006.01); C23F 11/14 (2006.01) | ||
| U.S. Cl. 208—47 [252/390; 508/545; 508/561; 508/562; 585/950] | 14 Claims |
| 1. A method for inhibiting corrosion of metal surfaces in an overhead system in which hydrocarbons, water, ammonium chloride
or amine hydrochlorides condense, the method comprising
adding to the overhead system an amine composition in an amount and at a rate sufficient to maintain the pH of water condensate
in the system at a pH of about 4.0 or higher effective to inhibit corrosion, the amine composition comprising:
one sole amine selected from the group consisting of tert-butylamine, ethyldimethylamine, and isopropyldimethylamine; or
at least two different amines selected from the group consisting of dimethylethanolamine, n-butylamine, sec-butylamine, tert-butylamine,
diethylamine, dimethylbutylamine, dimethylisopropanolamine, ethylamine, ethyldimethylamine, N-ethylmorpho-line, isopropylamine,
isopropyldimethylamine, methylamine, and trimethylamine.
|