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    ASTM D7169 - 20e1

    Standard Test Method for Boiling Point Distribution of Samples with Residues Such as Crude Oils and Atmospheric and Vacuum Residues by High Temperature Gas Chromatography

    Active Standard ASTM D7169 | Developed by Subcommittee: D02.04.0H

    Book of Standards Volume: 05.03

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    Significance and Use

    5.1 The determination of the boiling point distribution of crude oils and vacuum residues, as well as other petroleum fractions, yields important information for refinery operation. These boiling point distributions provide information as to the potential mass percent yield of products. This test method may provide useful information that can aid in establishing operational conditions in the refinery. Knowledge of the amount of residue produced is important in determining the economics of the refining process.

    1. Scope

    1.1 This test method covers the determination of the boiling point distribution and cut point intervals of crude oils and residues by using high temperature gas chromatography. The amount of residue (or sample recovery) is determined using an external standard.

    1.2 This test method extends the applicability of simulated distillation to samples that do not elute completely from the chromatographic system. This test method is used to determine the boiling point distribution through a temperature of 720 °C. This temperature corresponds to the elution of n-C100.

    1.3 This test method is used for the determination of boiling point distribution of crude oils. This test method uses capillary columns with thin films, which results in the incomplete separation of C4-C8 in the presence of large amounts of carbon disulfide, and thus yields an unreliable boiling point distribution corresponding to this elution interval. In addition, quenching of the response of the detector employed to hydrocarbons eluting during carbon disulfide elution, results in unreliable quantitative analysis of the boiling distribution in the C4-C8 region. Since the detector does not quantitatively measure the carbon disulfide, its subtraction from the sample using a solvent-only injection and corrections to this region via quenching factors, results in an approximate determination of the net chromatographic area. A separate, higher resolution gas chromatograph (GC) analysis of the light end portion of the sample may be necessary in order to obtain a more accurate description of the boiling point curve in the interval in question as described in Test Method D7900 (see Appendix X1).

    1.4 This test method is also designed to obtain the boiling point distribution of other incompletely eluting samples such as atmospheric residues, vacuum residues, etc., that are characterized by the fact that the sample components are resolved from the solvent.

    1.5 This test method is not applicable for the analysis of materials containing a heterogeneous component such as polyesters and polyolefins.

    1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Section 8.

    1.8 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.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D2887 Test Method for Boiling Range Distribution of Petroleum Fractions by Gas Chromatography

    D2892 Test Method for Distillation of Crude Petroleum (15-Theoretical Plate Column)

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance

    D6352 Test Method for Boiling Range Distribution of Petroleum Distillates in Boiling Range from 174C to 700C by Gas Chromatography

    D7500 Test Method for Determination of Boiling Range Distribution of Distillates and Lubricating Base Oilsin Boiling Range from 100C to 735C by Gas Chromatography

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

    E594 Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography

    E1510 Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs

    ICS Code

    ICS Number Code 71.040.50 (Physicochemical methods of analysis)

    Referencing This Standard
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    DOI: 10.1520/D7169-20E01

    Citation Format

    ASTM D7169-20e1, Standard Test Method for Boiling Point Distribution of Samples with Residues Such as Crude Oils and Atmospheric and Vacuum Residues by High Temperature Gas Chromatography, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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