ASTM D2318-2014e1 Standard Test Method for Quinoline-Insoluble &40 QI&41 Content of Tar and Pitch《焦油和硬沥青中喹啉不溶物 (QI) 含量的标准试验方法》.pdf
《ASTM D2318-2014e1 Standard Test Method for Quinoline-Insoluble &40 QI&41 Content of Tar and Pitch《焦油和硬沥青中喹啉不溶物 (QI) 含量的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D2318-2014e1 Standard Test Method for Quinoline-Insoluble &40 QI&41 Content of Tar and Pitch《焦油和硬沥青中喹啉不溶物 (QI) 含量的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D2318 141Standard Test Method forQuinoline-Insoluble (QI) Content of Tar and Pitch1This standard is issued under the fixed designation D2318; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout the test method in September 2014.1. Scope*1.1 This test method covers the determination of thequinoli
3、ne-insoluble matter (QI) in tar and pitch.1.2 Since this test method is empirical, strict adherence toall details of the procedure is necessary.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 This standard does not purpo
4、rt to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. For hazardsinformation, see Section 7.2. Refer
5、enced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch andAsphalt (Displacement Method)D95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD329 Specification for AcetoneD362 Specification for Industrial Grade Toluene (Withdrawn1989)3
6、D850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD4296 Practice for Sampling PitchE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3. Summary of Test Method3.1 The sample is digested in hot
7、quinoline and filtered. Theinsoluble material is washed, dried, and weighed.4. Significance and Use4.1 This test method is useful in evaluating and character-izing tar and pitch, and as one element in establishing theuniformity of shipments and sources of supply.5. Apparatus5.1 Filtering Crucibles,
8、porcelain, with fine-porositybottom, 25 mL to 40 mL capacity, high-form, maximum porediameter, 7 m.5.2 Filter ApparatusFilter flask and tube with crucibleadapter.5.3 SievesU. S. Standard 600 m (No. 30) and 250 m(No. 60), conforming to Specification E11.5.4 Electric Hot Plate or Water Bath, maintaine
9、d at 75 C 65 C.6. Reagents and Materials6.1 Quinoline, Refined, meeting the following requirements:6.1.1 The quinoline shall distill from 5 % to 95 % within arange of 2 C that shall include the temperature of 237.4 Cafter corrections for barometric pressure and emergent stemhave been applied. The di
10、stillation shall be carried out inaccordance with Test Method D850 using a total immersionthermometer with a range from 195 C to 305 C, graduated in0.5 C, and conforming to the requirements for Thermometer69C as described in Specification E1. Temperature measuringdevices such as precision thermocoup
11、les, resistance tempera-ture detectors (RTDs), and liquid-in-glass thermometers withequal or better accuracies in the appropriate temperature rangemay be used.6.1.2 The quinoline shall have a specific gravity at 15.5/15.5 C of 1.092 to 1.098, as determined by Test Method D71,or other method of equiv
12、alent accuracy.6.1.3 The quinoline shall be clear and light in color and shallcontain less than 0.5 % volume of water as determined by TestMethod D95. If not, redistill the quinoline in all-glassapparatus, discarding the first 5 % and collecting the next1This test method is under the jurisdiction of
13、 ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricantsand is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.Current edition approved May 1, 2014. Published May 2014. Originallyapproved in 1964. Last previous edition approved
14、 in 2013 as D2318 98 (2013).DOI: 10.1520/D2318-14E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The las
15、t approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States190 %. If the quinoline contains suspended mat
16、ter but is clear,light in color, and contains less than 0.5 % water, filter thequinoline through a crucible containing5gofCelite FilterAid.6.1.4 Store the quinoline in a tightly closed, dark bottle.6.2 Toluene, Industrial Pure, meeting Specification D362.6.3 Acetone, meeting Specification D329.6.4 C
17、oncentrated Hydrochloric Acid.6.5 Celite Analytical Filter Aid (CAFA)Dry to constantweight at 105 C, and store in tightly stoppered container.6.5.1 Do not use any other grade of filter aid becausefiltration characteristics may differ. CAFA is manufacturedonly by Manville Co. and distributed through
18、scientific supplyhouses.7. Hazards7.1 Fumes of the solvents should be removed by means ofproper hoods from all working areas. The working area shouldbe kept free of sparks and flames. Quinoline fumes should notbe inhaled, and prolonged contact with the skin should beavoided. Toluene is toxic and fla
19、mmable.7.2 Observe proper laboratory procedures for handling hy-drochloric and diluting acid.8. Bulk Sampling8.1 Samples from shipments shall be taken in accordancewith Practice D4296 and shall be free of foreign substances.Thoroughly mix the sample immediately before removing arepresentative portio
20、n for the determination or for dehydration.9. Dehydration of Sample9.1 Hard PitchIf the solid bulk sample contains freewater, air-dry a representative portion in a forced draft oven at50 C.9.2 Soft PitchIf the presence of water is indicated bysurface foam on heating, maintain a representative portio
21、n ofthe bulk sample at a temperature between 125 C and 150 C inan open container until the surface is free of foam. Take carenot to overheat, and remove heat source immediately whenfoam subsides.9.3 TarAwet tar sample may either be dehydrated or usedas received as long as conditions stated in 9.3.1
22、and 9.3.2 aremet.9.3.1 Dehydrate a representative portion of the bulk sampleat atmospheric pressure using a simple side-arm distillationapparatus similar to the one in Test Method D850 and stop thedistillation when the temperature reaches 170 C. Separate anyoil from the water that has distilled over
23、 (if crystals are present,warm sufficiently to ensure their solution) and thoroughly mixthe oil with the residual tar in the still after the latter has cooledto a moderate temperature.9.3.2 As an alternative to dehydration, the water content ofthe tar is determined by Test Method D95, and if the wat
24、ercontent is less than 10 mass percent, the QI content is correctedto a dry-tar basis (see 13.2). This alternative test methodapplies only to stable emulsions of water in tar, that is, no waterseparates when the tar sample is left undisturbed for 24 h atroom temperature.10. Preparation of Working Sa
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