The saturate,aromatics,resin and asphaltene components of paraffin-base(PB)and naphthenic-base(HB)crude oil are separated by chromatographic column.The acidic components of crude oil are extracted by compounded polar ...The saturate,aromatics,resin and asphaltene components of paraffin-base(PB)and naphthenic-base(HB)crude oil are separated by chromatographic column.The acidic components of crude oil are extracted by compounded polar solvents and identified by methyl esterification of diazomethane.The acidic components before and after asphaltene removal are investigated by gas chromatography-mass spectrometer.The effect of four fractions in simulated oil on interfacial activity is discussed.The results show PB is rich in naphthalene series and tri-aromatic steroids,and HB has a high content of phenanthrene series,chrysene series and methylpyrene,besides higher content of naphthalene series.The long carbon chain acids in HB oil decrease significantly by asphaltenes removal,confirming the presence of heavy oil acids in asphaltene.A little amount of saturates and aromatics in simulated oil can reduce the interfacial tension(IFT).When the content of asphaltenes of simulated oil is increased,IFT is initially decreased and finally increased because of stability of asphaltenes.When resin is increased,IFT is initially increased and then decreased.Simulated oil containing the resin from naphthenic-base oil is more sensitive to alkali than that of paraffin-base resin,which can reduce the IFT between oil and water at a larger range.展开更多
详细介绍了石蜡基原油性质,对利用石蜡基原油研制10号建筑沥青工艺进行了深入研究。通过大量的试验,找到了利用石蜡基原油减压渣油馏分、丙烷脱油沥青研制符合GB/ T 494—1998标准的10号建筑沥青的方法,为石蜡基原油加工10号建筑沥青提...详细介绍了石蜡基原油性质,对利用石蜡基原油研制10号建筑沥青工艺进行了深入研究。通过大量的试验,找到了利用石蜡基原油减压渣油馏分、丙烷脱油沥青研制符合GB/ T 494—1998标准的10号建筑沥青的方法,为石蜡基原油加工10号建筑沥青提供了一条途径。展开更多
Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\}...Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. The other was a maileic anhydride-alpha-olefins copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. Adding 100ppm of PPD to Daqing crude oil combined with heat treating resulted a pour point depression of 19 to 22 ℃. When samples 100×10\+\{-6\} were added to Liaohe, Renqiu, Xinjiang, Daqing crude oil, results show that they have very good pour point depressing effects.展开更多
基金financial support by the National Natural Science Foundation of China(51474035).
文摘The saturate,aromatics,resin and asphaltene components of paraffin-base(PB)and naphthenic-base(HB)crude oil are separated by chromatographic column.The acidic components of crude oil are extracted by compounded polar solvents and identified by methyl esterification of diazomethane.The acidic components before and after asphaltene removal are investigated by gas chromatography-mass spectrometer.The effect of four fractions in simulated oil on interfacial activity is discussed.The results show PB is rich in naphthalene series and tri-aromatic steroids,and HB has a high content of phenanthrene series,chrysene series and methylpyrene,besides higher content of naphthalene series.The long carbon chain acids in HB oil decrease significantly by asphaltenes removal,confirming the presence of heavy oil acids in asphaltene.A little amount of saturates and aromatics in simulated oil can reduce the interfacial tension(IFT).When the content of asphaltenes of simulated oil is increased,IFT is initially decreased and finally increased because of stability of asphaltenes.When resin is increased,IFT is initially increased and then decreased.Simulated oil containing the resin from naphthenic-base oil is more sensitive to alkali than that of paraffin-base resin,which can reduce the IFT between oil and water at a larger range.
文摘Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. The other was a maileic anhydride-alpha-olefins copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. Adding 100ppm of PPD to Daqing crude oil combined with heat treating resulted a pour point depression of 19 to 22 ℃. When samples 100×10\+\{-6\} were added to Liaohe, Renqiu, Xinjiang, Daqing crude oil, results show that they have very good pour point depressing effects.
