Standard Test Method for Distillation of Heavy Hydrocarbon Mixtures (Vacuum Potstill Method)

Importancia y uso:

5.1 This test method is one of a number of tests conducted on heavy hydrocarbon mixtures to characterize these materials for a refiner or a purchaser. It provides an estimate of the yields of fractions of various boiling ranges.

5.2 The fractions made by this test method can be used alone or in combination with other fractions to produce samples for analytical studies and quality evaluations.

5.3 Residues to be used in the manufacture of asphalt can also be made but may not always be suitable. The long heat soaking that occurs in this test method may alter some of the properties.

Note 1: While the practice of reblending distillates with residue can be done to produce a lighter residue, it is not recommended because it produces blends with irregular properties.

5.4 Details of cutpoints must be mutually agreed upon before the test begins.

5.5 This is a complex procedure involving many interacting variables. It is most important that at the time of first use of a new apparatus, its components be checked as detailed in Annex A1 and Annex A2 and that the location of the vapor temperature sensor be verified as detailed in 6.5.3 and Fig. 1.

Size

A

B

C

D

E

F

G

H

I

25 mm

 85 mm

 75 mm

 64 mm

 47 mm ID

 40 mm OD

 4–5 mm

 35/25

28/15

35 mm

36 mm

 90 mm

 75 mm

 64 mm

 68 mm ID

 57 mm OD

 5–6 mm

 65/40

35/25

35 mm

50 mm

110 mm

100 mm

 75 mm

 94 mm ID

 79 mm OD

 7–9 mm

 75/50

35/25

45 mm

70 mm

140 mm

100 mm

100 mm

131 mm ID

111 mm OD

10–11 mm

102/75

50/30

70 mm

Subcomité:

D02.08

Volúmen:

05.02

Número ICS:

71.080.01 (Organic chemicals in general)

Palabras clave:

crude oils; distillation; heavy oils; potstill; residue; vacuum;