An Experimental Evaluation of the Effects of Selected Organic Compounds on the Formation of Insolubles in Diesel Fuels.
Abstract
The study documents and interrelates five experimental programs conducted by the David Taylor Naval Ship Research and Development Center in-house and under contract. The programs were designed to increase understanding of the effects of eleven selected heterocompounds on the stability of diesel-range fuels. The programs employed any or all of four different stability tests ranging from an oven test conducted at 150 F (65.6) for periods up to eight weeks to a test which exposed the fuel to a temperature of 500 F (260 C) for a few seconds. Ranking of the fuels and fuel mixes by all of the tests was reasonably consistent. The nature of the base fuel was important in determining the amount of sediment formed in the presence of a given heterocompound. Of the nine compounds individually tested, 2,5-dimethylpyrrole (DMP) and 1,2,5-trimethylpyrrole produced the greatest amounts of sediment, and 2- methylpiperazine (MPPZ), 1-dodecanethiol (DDSH), and 2,6-di-tert-butylphenol the least. Also, DDSH over a range of concentrations showed a synergistic effect in the presence of a constant level of DMP. In a synergistic effect in the presence of a constant level of DMP. In contrast, MPPZ inhibited the formation of sediment in the presence of an equivalent concentration of DMP. A number of sediment mass versus time curves gave evidence of an inducation period. Curves of sediment mass versus compound concentration was roughly linear. Originator supplied keywords include: Storage stability; Thermal stability; Oxidative stability; Oxygen compounds; Gum formation rates; Sediment formation rates; Nitrogen compounds; Heterocompounds; Sulfur compounds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1985
- Accession Number
- ADA161323
Entities
People
- John G. Zimmerman