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ASTM D5236-99ae1

Historical Revision

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

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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 residua. 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 (10570°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 D 2892. 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 the 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 inch-pound units given in parentheses are provided for information purposes 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, 9.6 and A2.3.1.3.


SDO ASTM: ASTM International
Document Number D5236
Publication Date Dec. 10, 2001
Language en - English
Page Count 17
Revision Level 99ae1
Supercedes
Committee D02.08
Publish Date Document Id Type View
Nov. 1, 2023 D5236-23 Revision
July 1, 2018 D5236-18A Revision
April 1, 2018 D5236-18 Revision
May 1, 2017 D5236-17 Revision
May 1, 2013 D5236-13 Revision
June 10, 2003 D5236-03 Revision
April 10, 2002 D5236-02 Revision
Dec. 10, 2001 D5236-99AE01 Revision
Dec. 10, 2001 D5236-01 Revision
Dec. 1, 2011 D5236-03R11 Reaffirmation
Dec. 1, 2007 D5236-03R07 Reaffirmation