ASTM D7060-05
Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- Standard No.
- ASTM D7060-05
- Release Date
- 2005
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D7060-09
- Latest
- ASTM D7060-20
- Scope
Asphaltenes are naturally occurring materials in crude petroleum and petroleum products containing residual material. The asphaltenes are usually present in colloidal suspensions, but they may agglomerate and flocculate if the suspension of asphaltene molecules is disturbed through excess stress or incompatibility. This test method provides compatibility parameters, which can be used to assess stability reserve and compatibility.
A blend is considered stable when the blend’s peptizing power is higher than the blend’s maximum flocculation ratio;3 ,4 both of them can be calculated using empirical blend rules. Refineries and terminal owners can prevent the flocculation of asphaltenes due to incompatibility by assessing the compatibility of fuels beforehand.
Note 38212;See Appendix X1 for an example of prediction of compatibility.
1.1 This test method covers a procedure for quantifying the maximum flocculation ratio of the asphaltenes in the oil and the peptizing power of the oil medium, by an automatic instrument using an optical device.
1.2 This test method is applicable to atmospheric or vacuum distillation residues, thermally cracked residue, intermediate and finished residual fuel oils, containing at least 1 mass % asphaltenes. This test method has not been developed for asphalts.
Note 18212;An optical probe detects the formation of flocculated asphaltenes. The start of flocculation is interpreted when a significant and sustained increase in rate-of-change of signal, as measured by the optical probe, ensures flocculation is in progress. The start of flocculation can be detected unambiguously when the sample contains at least 1 % mass asphaltenes as measured by Test Method D 6560.
Note 28212;This test method is applicable to products typical of Specification D 396-Grades 5L, 5H, and 6, and Specification D 2880-Grades 3-GT and 4-GT.
1.3 This test method was evaluated in a within-laboratory study in the range of 16 to 57 for the maximum flocculation ratio and in the ranges of 27 to 96 for peptizing power.
1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM D7060-05 Referenced Document
- ASTM D2880 Standard Specification for Gas Turbine Fuel Oils
- ASTM D396 Standard Specification for Fuel Oils
- ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
- ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
- ASTM D4870 Standard Test Method for Determination of Total Sediment in Residual Fuels
- ASTM D6560 Standard Test Method for Determination of Asphaltenes (Heptane Insolubles) in Crude Petroleum and Petroleum Products
- ASTM D6792 Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
ASTM D7060-05 history
- 2020 ASTM D7060-20 Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2019 ASTM D7060-12(2019) Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2012 ASTM D7060-12(2014) Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2012 ASTM D7060-12 Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2009 ASTM D7060-09 Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2005 ASTM D7060-05 Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
- 2004 ASTM D7060-04 Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)
