Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCRx (Expansion Method)

Importancia y uso:

5.1 Vapor pressure of crude oil at various V/Ls is an important physical property for shipping and storage.

Note 2: A vapor-liquid ratio of 0.02:1 (X = 0.02) mimics closely the situation of an oil tanker.

5.2 Vapor pressure of crude oil is important to crude oil producers and refiners for general handling and initial refinery treatment.

5.3 The vapor pressure determined by this test method at a vapor-liquid ratio of 4:1 (VPCR₄) of crude oil at 37.8 °C can be related to the vapor pressure value determined on the same material when tested by Test Method D323 (see Appendix X1).

5.4 Air saturation of crude oil shall not be done to avoid potential vapor loss. However air saturation of the chilled verification fluid is mandatory (see 7.2 and Section 11).

5.5 This test method can also be applied in online applications.

Subcomité:

D02.08

Referida por:

D4057-22, D8009-22, D8236-18, D8253-21, D8009-22, D4057-22, D5191-22, D8009-22, D5191-22, D7975-22, D4057-22, D5191-22, D8003-22, D0323-20A, D5191-22, D0323-20A, D0323-20A, D4057-22

Volúmen:

05.02

Número ICS:

75.040 (Crude petroleum)

Palabras clave:

crude oil; expansion method; Reid vapor pressure; vapor pressure;