Vanadium corrosion inhibitor

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Claims

1. A fuel mixture comprising a hydrocarbon fuel and a yttrium ester/chelate complex, wherein when the hydrocarbon fuel is burned, V.sub.2 O.sub.5 is a by-product, and wherein the concentration of the yttrium complex in the mixture provides at least a stoichiometric amount of yttrium for a substantially complete reaction between the yttrium and V.sub.2 O.sub.5 whereby the yttrium and V.sub.2 O.sub.5 react to form YVO.sub.4.

2. The mixture of claim 1, wherein the concentration of the yttrium complex in the mixture provides at least 125% of the stoichiometric amount of yttrium required for a substantially complete reaction between the yttrium and vanadium.

4. The mixture of claim 3, wherein the yttrium ester comprises four to twelve carbon atoms.

5. The mixture of claim 3, wherein the yttrium ester is selected from the group consisting of yttrium octonate and yttrium 2-ethyl hexanoate.

9. The inhibitor of claim 8, wherein the yttrium ester comprises four to twelve carbon atoms.

10. The inhibitor of claim 8, wherein the yttrium ester is selected from the group consisting of yttrium octonate and yttrium 2-ethyl hexanoate.

Referenced Cited
U.S. Patent Documents
1973320 September 1934 Pacyna
2086775 July 1937 Lyons
2798789 July 1957 Spedding et al.
2857256 October 1958 Walker
2913319 November 1959 Trautman
3205053 September 1965 McCord
3332755 July 1967 Kukin
3348932 October 1967 Kukin
3523104 August 1970 Dobinson
3980449 September 14, 1976 Zetlmeisl
4251233 February 17, 1981 Sievers et al.
4647293 March 3, 1987 Cahill et al.
4836830 June 6, 1989 Gradeff et al.
5070072 December 3, 1991 Mir et al.
Patent History
Patent number: RE36117
Type: Grant
Filed: Mar 4, 1998
Date of Patent: Mar 2, 1999
Assignee: United Technologies Corporation (Hartford, CT)
Inventors: Norman S. Bornstein (West Hartford, CT), Hilton A. Roth (Cheshire, CT), Roscoe A. Pike (Granby, CT)
Primary Examiner: Margaret Medley
Application Number: 0/34,804