Standard Test Method for Determination of the Maximum Flocculation Ratio and Peptizing Power in Residual and Heavy Fuel Oils (Optical Detection Method)

Importancia y uso:

5.1 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.

5.2 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 4: See Appendix X1 for an example of prediction of compatibility.

Subcomité:

D02.14

Volúmen:

05.03

Número ICS:

75.160.20 (Liquid fuels)

Palabras clave:

compatibility; heavy fuel oil; maximum flocculation ratio; P-ratio; peptizing power; residual fuel oil;