ASTM-D5236 2011

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D5236-03(2011) Standard Test Method for Distillation of Heavy Hydrocarbon Mixtures (Vacuum Potstill Method)

Published By	Publication Date	Number of Pages
ASTM	2011	18

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Categories: 71.080.01 - Organic chemicals in general, ASTM

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Description

ASTM D5236-03-Reapproved2011

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

ASTM D5236

Scope

1.1 This test method covers the procedure for distillation of heavy hydrocarbon mixtures having initial boiling points greater than 150°C (300°F), such as heavy crude oils, petroleum distillates, residues, and synthetic mixtures. It employs a potstill with a low pressure drop entrainment separator operated under total takeoff conditions. Distillation conditions and equipment performance criteria are specified and typical apparatus is illustrated.

1.2 This test method details the procedures for the production of distillate fractions of standardized quality in the gas oil and lubricating oil range as well as the production of standard residue. In addition, it provides for the determination of standard distillation curves to the highest atmospheric equivalent temperature possible by conventional distillation.

1.3 The maximum achievable atmospheric equivalent temperature (AET) is dependent upon the heat tolerance of the charge. For most samples, a temperature up to 565°C (1050°F) can be attained. This maximum will be significantly lower for heat sensitive samples (for example, heavy residues) and might be somewhat higher for nonheat sensitive samples.

1.4 The recommended distillation method for crude oils up to cutpoint 400°C (752°F) AET is Test Method D2892. This test method can be used for heavy crude oils with initial boiling points greater than 150°C (302°F). However, distillation curves and fraction qualities obtained by these methods are not comparable.

1.5 This test method contains the following annexes:

1.5.1 Annex A1—Test Method for Determination of Temperature Response Time,

1.5.2 Annex A2—Practice for Calibration of Sensors,

1.5.3 Annex A3—Test Method for Dehydration of a Wet Sample of Oil,

1.5.4 Annex A4—Practice for Conversion of Observed Vapor Temperature to Atmospheric Equivalent Temperature (AET), and

1.5.5 Annex A5—Test Method for Determination of Wettage.

1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.7 This 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. For specific warnings, see 6.5.4.2, 6.5.6.3, 6.9.3, 9.5, 9.7, and A2.3.1.3.

Keywords

crude oils; distillation; heavy oils; potstill; residue; vacuum; Atmospheric equivalent temperature (AET); Calibration–temperature analysis instrumentation; Conversion units/factors; Crude oil distillation; Dehydration; Distillation–petroleum products; Heavy oils; Potstill; Pressure testing–petroleum products; Residue–petroleum products; Sensors; Temperature response time; Vacuum distillation; Vacuum potstill method; Vacuum testing–petroleum products; Vapor temperature measurement; Wettage

ICS Code

ICS Number Code 71.080.01 (Organic chemicals in general)

DOI: 10.1520/D5236-03R11

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus
3	FIG. 1
4	FIG. 2 TABLE 1
5	FIG. 3 FIG. 4
6	FIG. 5 FIG. 6
7	Sampling Preparation of Apparatus Procedure TABLE 2
8	FIG. 7
9	Calculation Report
10	Precision and Bias Keywords FIG. 8
11	A1. TEST METHOD FOR DETERMINATION OF TEMPERATURE RESPONSE TIME A1.1 Scope A1.2 Significance and Use A1.3 Procedure FIG. 9
12	A1.4 Precision and Bias A2. PRACTICE FOR CALIBRATION OF SENSORS A2.1 Principle A2.2 Temperature Sensors FIG. A2.1
13	A2.3 Vacuum Sensors FIG. A2.2 TABLE A2.1 TABLE A2.2 FIG. A2.3
14	A3. TEST METHOD FOR DEHYDRATION OF A WET SAMPLE OF OIL A3.1 Scope A3.2 Summary of Test Method A3.3 Significance and Use A3.4 Apparatus A3.5 Procedure A3.6 Calculation A3.7 Precision and Bias
15	A4. PRACTICE FOR CONVERSION OF OBSERVED VAPOR TEMPERATURE TO ATMOSPHERIC EQUIVALENT TEMPERATURE (AET) A4.1 Scope A4.2 Significance and Use A4.3 Calculation
16	FIG. A4.1
17	A5. TEST METHOD FOR DETERMINATION OF WETTAGE A5.1 Scope A5.2 Summary of Test Method A5.3 Significance and Use A5.4 Procedure A5.5 Precision and Bias FIG. A4.2

Additional information

Standard Title	D5236-03(2011) Standard Test Method for Distillation of Heavy Hydrocarbon Mixtures (Vacuum Potstill Method)
Published Code	ASTM
Publication Date	2011
Pages Count	18
ICS Codes	71.080.01 - Organic chemicals in general