ASTM D7321-2016 red 5431 Standard Test Method for Particulate Contamination of Biodiesel B100 Blend Stock Biodiesel Esters and Biodiesel Blends by Laboratory Filtration.pdf
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1、Designation: D7321 14D7321 16Standard Test Method forTest Method for Particulate Contamination of Biodiesel B100Blend Stock Biodiesel Esters and Biodiesel Blends byLaboratory Filtration1This standard is issued under the fixed designation D7321; the number immediately following the designation indica
2、tes the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method covers the determination o
3、f the mass of particulate contamination in B100 biodiesel in accordance withSpecification D6751 and BXX blends that are prepared against all No. 1 and No. 2 grade fuels allowed within Specifications D396and D975.NOTE 1Middle distillate fuels with flash points less than 38 C have been ignited by disc
4、harges of static electricity when the fuels have been filteredthrough inadequately bonded or grounded glass fiber filter systems. See Guide D4865 for a more detailed discussion of static electricity formation anddischarge.1.2 The values stated in SI units are to be regarded as standard. No other uni
5、ts of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regu
6、latorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D396 Specification for Fuel OilsD975 Specification for Diesel Fuel OilsD1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum and Petroleum ProductsD4865 Guide for Generation and Dissipation of St
7、atic Electricity in Petroleum Fuel SystemsD6751 Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels3. Terminology3.1 Definitions:3.1.1 biodiesel, nfuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats,designated B100.3.1.
8、2 biodiesel blend, BXX, nblend of biodiesel fuel with petroleum based biodiesel fuel.3.1.3 bond, vto connect two parts of a system electrically by means of a conductive wire to eliminate voltage differences.3.1.4 ground, vto connect electrically with earth.3.2 Definitions of Terms Specific to This S
9、tandard:3.2.1 filtered flushing fluids, nany of three solvents, methanol, propan-2-ol (isopropanol), or 2,2,4-trimethylpentane, filteredthrough a nominal 0.45 m 0.45 m filter.3.2.2 glass fiber filter, nglass fiber filter used in this test method.1 This test method is under the jurisdiction ofASTM Co
10、mmittee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of SubcommitteeD02.14 on Stability and Cleanliness of Liquid Fuels.Current edition approved June 1, 2014June 1, 2016. Published July 2014August 2016. Originally approved in 2008. Last previous edition ap
11、proved in 20112014 asD7321 11D7321 14.1. DOI: 10.1520/D7321-14.10.1520/D7321-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page o
12、n the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that user
13、s consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoh
14、ocken, PA 19428-2959. United States14. Summary of Test Method4.1 B100 Biodiesel Blend Stock Filtration:4.1.1 Ameasured volume of about 400 mL400 mLof biodiesel ester (B100) is vacuum filtered through one 0.7 m 0.7 m glassfiber filter. When If upon visual inspection particulate contamination is obser
15、ved, this may result in a high filtration time. In suchcases, when the contamination is high or of a nature that induces slow filtration rates, two or more filtrations using a fresh filtereach time may be required to complete filtration in a reasonable time.4.1.2 After the filtration has been comple
16、ted, the filter is washed with solvent, dried, and weighed.The particulate contaminationlevel is determined by the mass gained by the glass fiber filter, and is reported in units of grams per cubic metre or its equivalentin milligrams per litre.4.2 BXX Biodiesel Blend Filtration:4.2.1 A measured vol
17、ume of about 800 mL 800 mL of biodiesel blend (BXX) is vacuum filtered through one 0.7 m 0.7 mglass fiber filter. When If upon visual inspection particulate contamination is observed, this may result in a high filtration time. Insuch cases, when the contamination is high or of a nature that induces
18、slow filtration rates, two or more filtrations using a freshfilter each time may be required to complete filtration in a reasonable time.4.2.2 After the filtration has been completed, the filter is washed with solvent, dried, and weighed.The particulate contaminationlevel is determined by the mass g
19、ained from the glass fiber filter, and is reported in units of grams per cubic metre or its equivalentin milligrams per litre.5. Significance and Use5.1 The mass of particulates present in a fuel is a significant factor, along with the size and nature of the individual particles,in the rapidity with
20、 which fuel system filters and other small orifices in fuel systems can become plugged. This test methodprovides a means of assessing the mass of particulates present in a fuel sample.5.2 The test method can be used in specifications and purchase documents as a means of controlling particulate conta
21、minationlevels in the fuels purchased.6. Apparatus6.1 Filtration SystemArrange the following components as shown in Fig. 1.6.1.1 Funnel and Funnel Base, with filter support for a 47 mm diameter glass fiber, and locking ring or spring action clip.6.1.2 Ground/Bond Wire, 0.912 mm to 2.59 mm (No. 10 th
22、rough No. 19) bare stranded flexible, stainless steel, or copperinstalled in the flasks and grounded as shown in Fig. 1.NOTE 2The electrical bonding apparatus shown in Fig. 1 or other suitable means of electrical grounding that ensure safe operation of the filtrationapparatus and flask can be used.
23、If the filtrate is to be subsequently tested for stability, it is advisable not to use copper since copper ions catalyze gumformation during the stability test.6.1.3 Receiving Flask, 1.5 L 1.5 L or larger borosilicate glass vacuum filter flask, into which the filtration apparatus fits,equipped with
24、a sidearm to connect to the safety flask.6.1.4 Safety Flask, 1.5 L 1.5 L or larger borosilicate glass vacuum filter flask equipped with a sidearm to connect the vacuumsystem. A fuel and solvent resistance rubber hose through which the grounding wire passes shall connect the sidearm of thereceiving f
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