焦化原料的表征与延迟焦化性能

161Vol.16No.120033JOURNALOFPETROCHEMICALUNIVERSITIESMar.2003:1006-396X(2003)01-0014-06,,,,(,257061):,,,17.3%20.1%1.9%5.6%,,60%80%,,,10%;,20%,,,:;;;;:TE624.3:ACharacterizationofCokingFeedstocksandTheirDelayedCokingPerformanceGUOAi-jun,ZHANGHong-yu,MUBao-quan,YUDao-yong,WANGZong-xian(NationalLaboratoryofHeavyOilProcessing,DepartmentofAppliedChemistry,UniversityofPetroleum,DongyingShandong257061,China)Abstract:TwocokingfeedstockssamplesfromJinzhourefineryatanintervaloftwelvemonthsandacokingrecyclepreparedthereofweresystematicallycharacterized,andthenthedelayedcokingperformanceofcokingfeedstockswasstudiedbyusingatin-bathedmicro-kettle.Theresultsshowthatselectedpropertiesofbothfeedstocksaregreatlydifferentwithcarbonresiduesof17.3%and20.1%andheptaneasphaltenecontentof1.9%and5.6%respectively.However,theirstructuralparametersarequitesimilar,and60%80%ofsulfurandnitrogenatomsareconcentratedinresins.Ontheotherhand,thedensity,carbonresidues,ashcontent,andmetalcontentofthesecokingfeedstocksarehigherthanthewell-knowndomesticrefractoryvacuumresiduesfromGudaooilfield,buttheirsulfurcontentisonlyabout10%ofthatofGudaos.Thecokingrecycleoilishighinasphaltenecontent(3.4%)andcarbonresidues(4.1%)andthusneedfurthertreatment.Cokingexperimentswiththesefeedstocksshowthatbothvariedcokingtemperaturesandcokingfeedstocksmightaffectproductdistributionandquality.Highertemperaturesfavorliquidproductincrementanddecrementofsulfurcontentincoke.Co-cokingofrecycleoilandfeedstocksmightalsoincreaseliquidproductionandinhibitcokeproduction.Keywords:Cokingfeedstocks;Cokingrecycleoil;Delayedcoking;Liquidyield;Massfractionofsulfur:2002-09-02:(1970-),,,:2002(360-02-1H010601-01),,[1-3];[4-6],,,©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,1(1#2#)1#CarloErba1160,,,(VPO);[7],[5],,,200mL,,38mLmin-122.12.1.1,1,1,,()1,,2#1#;2,2#1#,1#2#,,,,,,()1,,,4.1%,1#1.76(2),,,[4,8],,1Table1Selectedpropertiesofcokingfeedstocks1#2#M(VPO)11201150540810(20)/(gcm-3)0.99171.00350.95380.9756(100)/(mm2s-1)16554551211710/40464441(),%17.320.14.115.6/311--327(),%0.0800.0950.00440.030n(H)n(C)1.561.541.671.58(),%C87.1287.0886.5485.05511.©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.11#2#H11.4111.2612.1411.28N0.910.920.591.07S0.340.370.353.12()/(gg-1)224.6407.718.5131.6Ni118.3160.35.248.0Fe38.4123.15.113.8Ca65.997.33.333.8V2.02.20.12.2Na-24.84.8-,(1):,,,2.1.2[7]3,,2#fAfNRARN,,RARN,2Table2Thefour-subfractioncompositionsofcokingfeedstocks%1#2#17.2315.4548.2029.5526.1628.3451.3252.8320.11n-C71.905.563.35(4),,,,,90%:75%60%,60%3Table3Structuralaverageparametersofcokingfeedstocks1#2#CT81.083.438.9HT126.5128.365.0fA0.240.250.21fN0.230.240.18fP0.530.510.61RT9.19.73.3RA4.44.71.6RN4.75.01.7RARN0.940.940.94,,,2.2,[1]5:,,1236116©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.;,21,,,500,6%,6.5%4Table4PropertiesofthefoursubfractionsofcokingfeedstocksM(VPO)(),%HCNSn(H)n(C)n()/n()n()/n()1#51013.6286.100.200.061.893.262.8690011.6587.400.570.421.5915.9434.34138010.2786.851.560.431.4175.7561.07108608.4186.982.810.331.155.051.732#52012.9286.290.070.051.781.041.9984011.2588.000.450.501.5211.2633.74113010.3286.901.570.441.4179.3059.9666388.3786.711.580.301.198.404.3146012.8285.980.050.041.785.515.6879011.3488.050.530.711.5357.4959.2188011.2284.871.780.531.5830.4531.3631208.6387.271.860.381.183.643.755Table5Effectsofcokingtemperaturesonthedistributionofcokingproducts/4504705001#(),%6.16.87.0(1)(30250),%19.318.417.5(2)(250400),%16.621.023.2(3)(400),%13.325.031.1(),%49.464.471.8(),%44.528.821.2(2)(1)0.861.141.332#(),%6.27.07.5(1)(30250),%16.714.814.1(2)(250400),%16.119.621.8(3)(400),%12.724.129.4(),%45.558.565.3(),%48.334.527.2(2)(1)0.961.321.546:,,[9],,,,,,72#:,[10],(3),,711.©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3,,,,,6Table6Effectsofcokingtemperaturesonthequalityofproductcoke/4504705001#(),%0.320.310.31(),%0.170.280.382#(),%0.410.370.35(),%0.190.270.367RTable7EffectsofcycleratioRonthedistributionofcokingproducts(),%R=0()27.2465.267.50R=0.125.2067.587.2225.6367.077.30-0.43+0.51-0.08R=0.223.6969.297.0224.3068.577.13-0.61+0.72-0.11R=0.322.3370.786.8923.1669.866.98-0.83+0.92-0.09:500;R:;[1]HOUXiang-lin().[M].:,2001.94-103.[2]LIZhi-qiang().Heavyoilupgradingafocusofpetroleumrefiningtechniquesin21stcentury(21)[J].Petroleumrefineryengineering(),1999,29(12):8-14.[3]LIUHui-xian(),LIULing-li(),ZHOUYing(),etal.Hydrogenationandcokingroutesforsourresidueoilprocessing()[J].Petroleumprocessingandpetrochemicals(),2001,32(6):42-46.[4]WANGGuo-liang(),WANGGeng-xin(),HUANGXin-long(),etal.Developmentofworsingcrudeprocessing()[J].Petroleumrefineryengineering(),2000,30(1):27-31.[5]YUDao-yong(),MUBao-quan(),GUOAi-jun(),etal.Delayedcokingofslurry-bedhydrocrackedresiduefromatomosphericresidueofheavyoil()[J].Journaloftheuniversityofpetroleum,China(()),2002,26(1):83-84.[6]GUOAi-jun(),ZHANGHong-yu(),YUDao-yong(),etal.Cokingperformancesofresidueanditsfourgroupsbythermogravimetricanalysis()[J].Petroleumprocessingand8116©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd