1、Designation:D757909(Reapproved 2013)Standard Test Method forPyrolysis Solids Content in Pyrolysis Liquids by Filtrationof Solids in Methanol1This standard is issued under the fixed designation D7579;the number immediately following the designation indicates the year oforiginal adoption or,in the cas
2、e 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.Scope1.1 This test method describes a filtration procedure fordetermining the pyrolysis solids content of
3、pyrolysis liquid.Itis intended for the analysis of pyrolysis liquid with all rangesof pyrolysis solids concentrations.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesaf
4、ety 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.Material SafetyData Sheets are available for reagents and materials.Reviewthe
5、m for hazards prior to usage.For specific warningstatements,see 7.2,7.3,and 7.4.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum,PetroleumProducts,and LubricantsD4177 Practice for Automatic Sampling
6、 of Petroleum andPetroleum Products2.2 Other Standards:3ESPOO 2001 A guide to physical property characterisationof biomass-derived fast pyrolysis liquids3.Terminology3.1 Definitions:3.1.1 See also Terminology D4175.3.1.2 char,nfine carbonaceous powder that is separatedfrom the vapors of biomass duri
7、ng pyrolysis.3.1.2.1 DiscussionPyrolysis liquid biofuel contains uni-formly suspended char at varying concentrations.3.1.3 pyrolysis,nchemical decomposition of organic ma-terials by heating in the absence of oxygen.3.1.4 pyrolysis liquid biofuel,nliquid product from thepyrolysis of biomass.3.1.4.1 D
8、iscussionPyrolysis liquid biofuel is comprised ofa complex mixture of the decomposition products of ligno-cellulosic biomass including highly oxygenated organic com-pounds.It is produced from the pyrolysis of biomass,followedby the rapid condensation of its vapors.3.1.5 pyrolysis solids,nsolid parti
9、cles contained withinthe pyrolysis liquid biofuel.3.1.5.1 DiscussionPyrolysis solids consists of ash andchar.4.Summary of Test Method4.1 Apyrolysis liquid sample is dissolved in a methanol anddichloromethane solution(1:1),which is then filtered througha vacuum filter system.After filtering,the filtr
10、and is washedwith the solvent until the filtrate is clear.The filter is removed,dried and weighed.The pyrolysis solids content is calculatedbased on the original pyrolysis liquid sample.5.Significance and Use5.1 Pyrolysis liquid can be produced to various char con-centrations.Increasing pyrolysis so
11、lids content can affect thepyrolysis liquid biofuel handling,atomization and storagestability in a negative manner.6.Apparatus(see Fig.1)6.1 Smooth-tip Forceps.6.2 Beaker,400 mL.6.3 Glass Stirring Rod.6.4 Oven,explosion-proof,capable of maintaining a tem-perature of 105 6 3C.1This test method is und
12、er the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.06 on Analysis of Lubricants.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 2009.Last previous edition approved in 2009 as
13、D7579 09.DOI:10.1520/D7579-09R13.2For 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.3Available from VTT Energy,New En
14、ergy Technologies,Biologinkuja 35,P.O.Box 1601,FIN-02044 VTT,Finland.http:/www.vtt.fi/inf/pdf/publications/2001/P450.pdfCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 FIG.1 Paper Filtration ApparatusD7579 09(2013)2 6.5 Filtering Flask,1
15、L.6.6 Filter Holders,borosilicate glass.6.7 Filter Membrane,binder free glass microfiber,1 m.6.8 Weighing Dish,aluminum.6.9 Balance,capable of weighing to the nearest 0.0001 g(0.1 mg)with a range of 300 g.6.10 Vacuum.7.Reagents and Solvents7.1 Purity of ReagentsReagent grade chemicals shall beused i
16、n all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.4Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.If an industrial grade reagent isused,it shall be filtered using 0.45 m filter paper prior to use.7.2 Eth
