Studies of Diesel Fuel Insolubles Formation and Fuel Stabilizer Additives
Abstract
Insolubles in diesel fuels are known to occur through several mechanisms, some of which include polymerization, condensation, and acid-base reactions. Recent studies have revealed that acid-base reactions (or acid- catalyzed reactions) are especially important in the formation of sediments in fuels containing catalytically cracked stock. Evidence also exists that simply removing the acid and base fractions of the fuel does not completely eliminate sediment formation, which would indicate some sort of preliminary reaction, such as oxidation. Fuels containing little or no cracked stock are usually subject to different reactions to form insolubles. The type of additive used to reduce insolubles formation depends on the reactions that occur to produce the insolubles. For these reasons, additive efficacy will vary between fuels. The formations of fuel insolubles in a straight run fuel, a light cycle oil, and a blend of the two were studied. The effects of several commercial fuel stabilizer additives and one pure compound on sediment formation were studied. The inhibition mechanism of one fuel stabilizer, N,N'-dimethylcyclohexylamine, was also studied. The usefulness of the model system for evaluating stabilizer additive effectiveness was also demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA202297
Entities
People
- David L. Present
- Leo L. Stavinoha
- Steven R. Westbrook
Organizations
- Southwest Research Institute