ASTM-D7900 Standard Test Method for Determination of Light Hydrocarbons in Stabilized Crude Oils by Gas Chromatography

ASTM-D7900 - 2018(E1) EDITION - CURRENT
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Standard Test Method for Determination of Light Hydrocarbons in Stabilized Crude Oils by Gas Chromatography
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Scope

1.1 This test method specifies a method to determine the boiling range distribution of hydrocarbons in stabilized crude oil up to and including n-nonane. A stabilized crude oil is defined as having a Reid Vapor Pressure equivalent to or less than 82.7 kPa. The results of this test method can be combined with those from Test Method D7169 and IP 545 to give a full boiling point distribution of a crude oil (see Appendix X3).

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

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

5.1 Knowledge of the boiling point distribution of stabilized crude oils is important for the marketing, scheduling, and processing of crude oil in the petroleum industry. Test Method D7169 and IP 545 purport to give such a distribution in crude oils, but are susceptible to significant errors in the light ends portion of the distribution as well as in the mass recovery of the whole crude oil due to the interference imposed by the diluent solvent. This test method allows for more accurate determination of the front end of the boiling point distribution curve, in addition to providing important C1 to C9 (nonane) component level information, and more accurate mass recovery at C9 (nonane).

Keywords

boiling range distributions; crude oils; distillations; gas chromatography; petroleums; simulated distillations;; ICS Number Code 75.080 (Petroleum products in general)

To find similar documents by ASTM Volume:

05.04 (Petroleum Products and Lubricants (IV): D6973 - latest)

05.05 (Combustion Characteristics; Manufactured Carbon and Graphite Products; Catalysts)

To find similar documents by classification:

75.040 (Crude petroleum)

75.080 (Petroleum products in general)

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Document Number

ASTM-D7900-18e1

Revision Level

2018(E1) EDITION

Status

Current

Modification Type

Editorially changed

Publication Date

Nov. 1, 2018

Document Type

Test Method

Page Count

20 pages

Committee Number

D02.04.0L