F-76 Lubricity Improver Additive Evaluation
Abstract
The objective of this investigation is to expand and diversify the number and type of diesel lubricity additives that are available for use in the Navy???s distillate F-76 fuel. By increasing the number of approved LIA???s and diversifying the chemistries of these additives, the Navy will be prepared to compensate for the decrease in lubricity as ultra low sulfur fuels shift into focus while still retaining the fuel???s water separability traits. Test and evaluation of the additives focused on three main sections of the evaluation segment of the Navy draft fuel and additive approval process: specification, fit-for-purpose, and rig testing. A local ultra low sulfur diesel (ULSD) was clay treated in order to mimic ultra low sulfur fuels that would potentially be acquired by the Navy in the future. Additives were tested at two times the manufacturer???s recommended treat rate for both specification and fit-for-purpose testing, and several of these tests focused on the effects of the additives to the fuel???s water separation properties. Rig testing was conducted on the Naval Coalescence Tester only with additives that had failed crucial water separability testing such as demulsification and diesel MSEP. It was determined that if the worst possible case passed NCT testing, then all fuels additized with LIA that produced passing specification and fit-for-purpose results would pass as well. Eight of the eleven additives tested exhibited favorable properties for use in the Navy???s distillate F-76, while the three remaining additives were found unsatisfactory due to their low flash point.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 16, 2013
- Accession Number
- ADA618817
Entities
People
- Douglas Mearns
- Emily Lim
- Richard A. Kamin
- Ryan Turgeon
- Sherry Williams
Organizations
- Naval Air Systems Command