1、Manual of Petroleum Measurement Standards Chapter 11.3.3Miscellaneous Hydrocarbon Product PropertiesDenatured Ethanol Density and Volume Correction FactorsSECOND EDITION, NOVEMBER 2015Special NotesAPI publications necessarily address problems of a general nature. With respect to particular circumsta
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17、cle. Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is published annually by API, 1220 L Street, NW, Washington, DC 20005.Suggested revisions are invited and should be submitted to the Standards De
18、partment, API, 1220 L Street, NW, Washington, DC 20005, standardsapi.org.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 General . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Limits of Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、. 12 Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . 14 Implementation Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.1 Denatured 99+ % Fuel Ethanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . . . . . . . . . . . . . . 34.2 Denatured 95 % to 99 % Fuel Ethanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Rounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.1 Data Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65.2 Rounding of Numbers. . . . . . . . . . . . . . . . . . . . . .
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Annex A (informative) Ethanol VCF Table Historical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Annex B (informative) U.S. Regulation of Alcohol for Fuel Use. .
25、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Annex C (Informative) Denatured Ethanol Density Study. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Annex D (informative) Ethanol/Water Mixtures . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16FiguresA.1 U.S. Customs and Border Protection Directive
27、 on 99+ % Ethanol VCF . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8A.2 Data and the Applet Output Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9C.1 Denatured Ethanol Feedstock Densities (0 psig) . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12C.2 FS4 Data and the Applet Output Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Tables1 Significant Digits for Bulk Quantities . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6C.1 Denatured Ethanol Feedstock Densities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12C.2 Table 6C VCF values . . . . . . . . . . . . . . . . . . . . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13D.1 API Applet Regression of Portions of OIML Table II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15vIntroductionVolume Correction Factors (VCFs) are used to co
31、rrect observed liquid volumes at specific operating conditions to equivalent volumes at a standard temperature condition. The American Petroleum Institute provides procedures for calculating VCFs for Generalized Crude oils, Refined Products, Lubricating Oils, and Special Applications. These procedur
32、es are presented in API MPMS Ch. 11.12004/Adjunct to ASTM D1250-08/IP 200/08. The API has not previously addressed ethanol, considered a Special Application, in MPMS Ch. 11.1, so industry has used a variety of privately developed tables for both denatured 99+ % and denatured 95 % to 99 % fuel ethano
33、l VCFs. (Denaturant requirements vary by country and if this standard is being used outside the United States, refer to the local jurisdiction for denaturant requirements.) The most commonly used table has been that of a large ethanol supplier, and it appears that U.S. Customs and Border Protection
34、(CBP) and the Environmental Protection Agency (EPA) have adopted a variant of this table. The API, through a consortium of its member companies and in cooperation with the Renewable Fuels Association (RFA), commissioned an independent laboratory to take density measurements at various temperatures o
35、f pure (99.038 % by volume) ethanol and representative denatured fuel ethanols. The density data were obtained utilizing the best available commercial instrumentation and was then used to develop the VCFs provided in this standard.vii1Miscellaneous Hydrocarbon Product PropertiesDenatured Ethanol Den
36、sity and Volume Correction Factors1 Scope1.1 GeneralThis standard covers density and volume correction factors for denatured fuel ethanol. The actual standard consists of the explicit implementation procedures set forth in this document. Sample tables and other examples created from a computerized v
37、ersion of this implementation procedure are presented as examples only and do not represent the standard.1.2 Limits of ApplicationThis standard is applicable at any operating temperature to bulk (e.g. tank trucks, tank cargos, barges) denatured 95 % to 99 % fuel ethanol containing D4806 allowed dena
38、turants (natural gasoline, gasoline blend stocks, and unleaded gasoline) and denatured, 99+ % fuel ethanol containing less than 1 % denaturant. This standard does not apply to undenatured ethanol of any purity.2 Normative ReferencesThe following referenced documents are indispensable for the applica
39、tion of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API MPMS Ch. 11.12004, Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Product
40、s, and Lubricating Oils (includes Addendum dated September 2007).API MPMS Ch. 12.1.12012, Calculation of Static Petroleum QuantitiesUpright Cylindrical Tanks and Marine Vessels.3 Terms and DefinitionsFor the purposes of this document, the following definitions apply.3.1absolute densityRHOThe mass of
41、 a substance per unit of volume at a specified temperature and pressure. 3.2alpha A product-specific thermal coefficient of expansion used in the API MPMS Ch. 11.1 equations for VCFs (Annex A).3.3denaturantsMaterials added to ethanol under a formula approved by a regulatory agency to make it unsuita
42、ble for beverage use. 3.4denatured 95 % to 99 % fuel ethanolFuel ethanol denatured with natural gasoline, gasoline blendstocks, or regular gasoline in accordance with US federal regulations.2 API MPMS CHAPTER 11.3.33.5denatured 99+ % fuel ethanolFuel ethanol denatured with less than 1 % federally ap
43、proved denaturants in accordance with US federal regulations.3.6denatured fuel ethanolFuel ethanol made unfit for beverage use by the addition of denaturants allowed by D4806 for automotive spark-ignition engine fuel under formula(s) approved by the applicable regulatory agency to prevent the imposi
44、tion of beverage alcohol tax.3.7ethanolEthyl alcohol, the chemical C2H5OH.3.8fuel ethanolA grade of undenatured ethanol with other components common to its production (including small amounts of water) that do not affect the use of the product as a component for automotive spark ignition engine fuel
45、s.3.9gasolineA volatile mixture of liquid hydrocarbons, generally containing small amounts of additives, suitable for use as a fuel in spark-ignition internal combustion engines.3.10gross observed volumeGOVThe total volume of all petroleum or chemical liquids and sediment and water, excluding free w
46、ater, at observed temperature and pressure.3.11gross standard volumeGSVThe GOV gross observed volume corrected by the appropriate factors from the observed temperature and pressure to the specified reference conditions. 3.12gross volumeGVThe actual volume at flowing temperature and pressure.3.13natu
47、ral gasolineA natural gas liquid with a vapor pressure intermediate between condensate and liquefied petroleum gas. This liquid hydrocarbon mixture is recovered at normal pressure and temperature and is much more volatile and unstable than commercial gasoline.3.14net standard volumeNSVThe gross stan
48、dard volume (GSV) corrected to exclude non-merchantable components such as sediment and water (S e.g. while Table 1 recommends the calculated weight of a bulk cargo (say a barge of asphalt) be rounded to whole pounds or kilograms, a user may wish to calculate the weight of a barrel of product to two
49、 or three decimal places. The significant digits in Table 1 provide consistency within this standard and may differ slightly from API MPMS Ch. 12.1.1-2012 Table 1.5.2 Rounding of NumbersChain calculations should be performed without rounding or truncation. When a calculation result is to be rounded to a specific number of decimals, it shall always be rounded off in one step to the number of figures to be recorded and not rounded in two or more successive steps. When the figure to the right of the last place to be retained is less than five, the figure in the last place retained s
