ASTM_D_5236_-_13.pdf

Designation:D523613Standard Test Method forDistillation of Heavy Hydrocarbon Mixtures(Vacuum PotstillMethod)1This standard is issued under the fixed designation D5236;the number immediately following the designation indicates 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 procedure for distillation ofheavy hydrocarbon mixtures having initial boiling pointsgreater than 150C(300F),such as heavy crude oils,petro-leum distillates,residues,and synthetic mixtures.It employs apotstill with a low pressure drop entrainment separator oper-ated under total takeoff conditions.Distillation conditions andequipment performance criteria are specified and typical appa-ratus is illustrated.1.2 This test method details the procedures for the produc-tion of distillate fractions of standardized quality in the gas oiland lubricating oil range as well as the production of standardresidue.In addition,it provides for the determination ofstandard distillation curves to the highest atmospheric equiva-lent temperature possible by conventional distillation.1.3 The maximum achievable atmospheric equivalent tem-perature(AET)is dependent upon the heat tolerance of thecharge.For most samples,a temperature up to 565C(1050F)can be attained.This maximum will be significantly lower forheat sensitive samples(for example,heavy residues)and mightbe somewhat higher for nonheat sensitive samples.1.4 The recommended distillation method for crude oils upto cutpoint 400C(752F)AET is Test Method D2892.Thistest method can be used for heavy crude oils with initial boilingpoints greater than 150C(302F).However,distillation curvesand fraction qualities obtained by these methods are notcomparable.1.5 This test method contains the following annexes:1.5.1 Annex A1Test Method for Determination of Tem-perature Response Time,1.5.2 Annex A2Practice for Calibration of Sensors,1.5.3 Annex A3Test Method for Dehydration of a WetSample of Oil,1.5.4 Annex A4Practice for Conversion of Observed Va-por Temperature to Atmospheric Equivalent Temperature(AET),and1.5.5 Annex A5Test Method for Determination of Wet-tage.1.6 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.7 This standard does not purport 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 specificwarnings,see 6.5.4.2,6.5.6.3,6.9.3,9.5,9.7,and A2.3.1.3.1.8 WARNINGMercury has been designated by manyregulatory agencies as a hazardous material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.2.Referenced Documents2.1 ASTM Standards:2D941 Test Method for Density and Relative Density(Spe-cific Gravity)of Liquids by Lipkin Bicapillary Pycnom-eter(Withdrawn 1993)3D1217 Test Method for Density and Relative Density(Spe-cific Gravity)of Liquids by Bingham PycnometerD1250 Guide for Use of the Petroleum Measurement TablesD1298 Test Method for Density,Relative Density,or API1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.08 on Volatility.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1992.Last previous edition approved in 2011 as D5236 03(2011).DOI:10.1520/D5236-13.2For 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 last 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 States1 Gravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD1480 Test Method for Density and Relative Density(Spe-cific Gravity)of Viscous Materials by Bingham Pycnom-eterD2892 Test Method for Distillation of Crude Petroleum(15-Theoretical Plate Column)D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD5002 Test Method f