Stabilization of hydrocarbons by the addition of hydrazine
AssigneePhillips Petroleum Company
InventorsJoseph E. Bares, Byron G. Johnson, Frederick J. Cornforth
Life of this patent
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Abstract
Hydrocarbon-containing fluid compositions are provided comprising at least one hydrocarbon fluid, at least one heteroaromatic, and at least one hydrazine additive. The resulting composition has reduced temporal formation of colored materials and/or gummy deposits. Additionally, antioxidant additives are combined with the above composition and provide a further reduction in the formation of colored materials and/or gummy deposits.
Claims5
A process for retarding the formation of colored materials and gummy deposits in a hydrocarbon fluid containing at least one heteroaromatic comprising:
- blending an antioxidant additive and a hydrazine additive selected from the group consisting of the hydrazine family with said hydrocarbon fluid.
A process for retarding the formation of colored materials and gummy deposits in a hydrocarbon fluid containing indole comprising:
- blending from 300 ppm to 700 ppm hydrazine with said hydrocarbon fluid;
- and
- blending from 0.5 ppm to 100 ppm of an antioxidant with said hydrocarbon fluid.
Dependencies are inferred from the claim text.