利用热解-气相色谱/质谱联用仪研究减压渣油及其胶质亚组分的热解规律
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摘要
以长庆减压渣油及其胶质亚组分为原料,利用热解-气相色谱/质谱联用仪对其在不同条件下热解的产物进行分析,考察反应温度和升温速率对减压渣油热解的影响。结果表明:随着反应温度升高,热解产物中低碳烯烃含量增加,汽柴油馏分含量先增加后减小,在700℃时达到峰值;升温速率为1℃/ms时,汽柴油馏分含量最高;芳碳率越大、缩合程度越高的重胶质裂解能力越差。
The Changqing vacuum residue and resin subfractions were studied by using pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)to test the effect of reaction temperature and heating rate on VR pyrolysis.The results showed that as the pyrolysis temperature increased,the yields of light olefins in the pyrolysis product rose gradually,whereas the yields of gasoline and diesel fractions first increased and then decreased with a maximum value at 700 ℃;when the heating rate is 1 ℃/ms,the yield of gasoline and diesel reached maximum.The pyrolysis of resins subfractions showed that the higher the aromaticity and the higher the condensation degree,the worse the pyrolysis ability of the resins.
The Changqing vacuum residue and resin subfractions were studied by using pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)to test the effect of reaction temperature and heating rate on VR pyrolysis.The results showed that as the pyrolysis temperature increased,the yields of light olefins in the pyrolysis product rose gradually,whereas the yields of gasoline and diesel fractions first increased and then decreased with a maximum value at 700 ℃;when the heating rate is 1 ℃/ms,the yield of gasoline and diesel reached maximum.The pyrolysis of resins subfractions showed that the higher the aromaticity and the higher the condensation degree,the worse the pyrolysis ability of the resins.
引文
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[2] Casaneda L C,Munoz J A,Ancheyta J.Combined process schemes for upgrading of heavy petroleum[J].Fuel,2012,100:110-127
[3] Hallae N.Refinery hydrogen management for clean fuels production [J].Advances in Environmental Research,2001,6(1):81-98
[4] 刘晨光,朱春媚,靳力文,等.减压渣油热反应特性与原料组成的关联[J].石油学报(石油加工),1999,15(1):1-7
[5] 梁文杰,阙国和,林世雄.我国减压渣油的组成和特性[J].抚顺石油学院学报,1992(2):1-21
[6] 刘晨光,阙国和,陈月珠,等.用液相色谱及1H-NMR波谱法评价减压渣油[J].石油学报(石油加工),1987,3(3):93-101
[7] Zhang Bo,Zhong Zhaoping,Min Min,et al.Catalytic fast co-pyrolysis of biomass and food waste to produce aromatic:Analytical Py-GC/MS study[J].Bioresource Technology,2015,189:30-35
[8] Lu Qiang,Tang Zhe,Zhang Ying,et al.Catalytic upgrading of biomass fast pyrolysis vapors with Pd/SBA-15 catalysts[J].Industrial and Engineering Chemistry Research,2010,49(6):2573-2580
[9] Pattiya A,Titiloye J O,Bridgwater A V.Fast pyrolysis of cassava rhizome in the presence of catalysts[J].Journal of Analytical and Applied Pyrolysis,2008,81(1):72-79
[10] 梁文杰,阙国和,刘晨光,等.石油化学[M].2版.东营:中国石油大学出版社,2008:283-287
[11] Radmanesh R,Edward C,Gray M R.Modeling of mass transfer and thermal cracking during the coking of Athabasca residues[J].Chemical Engineering Science,2008,63(6):1683-1691