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ASTM-D7112:2005 Edition

ASTM-D7112:2005 Edition

$44.96

D7112-05 Standard Test Method for Determining Stability and Compatibility of Heavy Fuel Oils and Crude Oils by Heavy Fuel Oil Stability Analyzer (Optical Detection)

Published By Publication Date Number of Pages
ASTM 2005 11
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1.1 This test method covers an automated procedure involving titration and optical detection of precipitated asphaltenes for determining the stability and compatibility parameters of refinery residual streams, residual fuel oils, and crude oils. Stability in this context is the ability to maintain asphaltenes in a peptized or dissolved state and not undergo flocculation or precipitation. Similarly, compatibility relates to the property of mixing two or more oils without precipitation or flocculation of asphaltenes.

1.2 This test method is applicable to residual products from atmospheric and vacuum distillation, from thermal, catalytic, and hydrocracking processes, to products typical of Specifications D 396, Grades No. 5L, 5H, and 6, and D 2880, Grades No. 3-GT and 4-GT, and to crude oils, providing these products contain 0.05 mass % or greater concentration of asphaltenes.

1.3 This test method is not relevant to oils that contain less than 0.05 % asphaltenes, and would be pointless to apply to unstable oils that already contain flocculated asphaltenes.

1.4 The values stated in SI units shall be considered standard.

1.5 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Summary of Test Method
Significance and Use
3 Interferences
Apparatus
FIG. 1
4 Reagents and Materials
FIG. 2
5 Hazards
Sampling and Test Specimens
Preparation of Apparatus
FIG. 3
6 Calibration and Standardization
Quality Control Monitoring
FIG. 4
7 Procedure
9 Calculation of Results
FIG. 5
10 Report
Precision and Bias
Keywords
X1. INITIAL PRECISION DATA
X1.1
X1.2
X1.3
TABLE X1.1
11 TABLE X1.2
TABLE X1.3

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