芳香分和胶质对塔河常压渣油临氢热转化反应的影响
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摘要
以塔河常压渣油为原料,分离出芳香分和胶质,考察了渣油中芳香分和胶质含量对渣油临氢热转化反应产物及钒分布的影响。实验结果表明,当芳香分含量(w)从28.7%增加到37.5%时,次生饱和分增加了15.48百分点,气产率增加了11.65百分点,焦炭含量下降了3.46百分点,焦炭中钒分配率降低了1.03百分点;当胶质含量(w)由13%增加到33%时,次生饱和分增加了11.00百分点,气产率增加了13.22百分点,焦炭含量下降了5.40百分点,焦炭中钒分配率降低了4.92百分点;适当增加渣油中芳香分和胶质的含量,不仅能促进渣油临氢热转化向轻质化方向进行,且对轻质化过程的生焦起到一定抑制作用。
Aromatics and resin were separated from the Tahe atmospheric residue(THAR). The effects of the aromatics and resin contents on the product distribution in THAR hydrocracking and the distribution of vanadium in the products were investigated. The results showed that,when the aromatic content(w) increased from 28.7% to 37.5%,the secondary saturate content in the products and the gas yield increased by 15.4 8 and 11.65 percent point,and the coke content and the distribution rate of vanadium in the coke decreased by 3.46 and 1.03 percent point,respectively. When the resin content(w) increased from 13% to 33%,the secondary saturate content and the gas yield increased by 11.00 and 13.22 percent point,and the coke content and the distribution rate of vanadium in the cok e decreased by 5.40 and 4.92 percent point,respectively. The aromatics and resin could not only promote the thermal conversion of THAR to light fractions,but also inhibit coking in the conversion process.
Aromatics and resin were separated from the Tahe atmospheric residue(THAR). The effects of the aromatics and resin contents on the product distribution in THAR hydrocracking and the distribution of vanadium in the products were investigated. The results showed that,when the aromatic content(w) increased from 28.7% to 37.5%,the secondary saturate content in the products and the gas yield increased by 15.4 8 and 11.65 percent point,and the coke content and the distribution rate of vanadium in the coke decreased by 3.46 and 1.03 percent point,respectively. When the resin content(w) increased from 13% to 33%,the secondary saturate content and the gas yield increased by 11.00 and 13.22 percent point,and the coke content and the distribution rate of vanadium in the cok e decreased by 5.40 and 4.92 percent point,respectively. The aromatics and resin could not only promote the thermal conversion of THAR to light fractions,but also inhibit coking in the conversion process.
引文
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[19]相文强,马凤云,韩朝芳,等.塔河渣油加氢轻质化富集钒的研究[J].石油炼制与化工,2013,44(10):8-12.
[20]王少军,凌凤香,马波,等.渣油固定床加氢处理油中镍和钒的分布研究[J].燃料化学学报,2015,39(4):278-281.
[21]娄世松.石油中的镍钒存在形态及其脱除方法[J].石油化工腐蚀与防护,1996,13(4):30-32.
[2]王英杰,张忠洋,张玉,等.我国渣油加氢处理技术分析[J].当代化工,2007,36(3):221-223.
[3]周晓龙,陈绍洲.减压渣油组成和结构的研究[J].华东理工大学学报:自然科学版,1995,21(6):649-653.
[4]张寿增,岳淑范,沈家珍,等.大庆、胜利及任丘渣油的组成研究[J].石油炼制与化工,1982(1):26-35.
[5]Dickie J P,Yen T F.Macrostructures of the asphaltic fractions by various instrumental methods[J].Anal Chem,1967,39(14):1847-1852.
[6]张龙力,杨国华,阙国和,等.常减压渣油胶体稳定性与组分性质关系的研究[J].石油化工高等学校学报,2010,23(3):6-10.
[7]李生华,刘晨光.渣油热反应中第二液相的形成机制[J].燃料化学学报,1998,26(5):423-430.
[8]张龙力,张世杰,杨国华,等.常压渣油热反应过程中胶体的稳定性[J].石油学报:石油加工,2003,19(2):82-87.
[9]赵辉.渣油加氢转化规律研究[D].青岛:中国石油大学(华东),2009.
[10]邓文安,沐宝权.胜利减压渣油中的胶质在不同分散介质中热反应特性的考察[J].石油学报:石油加工,1998,14(1):6-10.
[11]洪琨,马凤云,钟梅,等.渣油重组分沥青质结构分析及其对临氢热反应过程生焦的影响[J].燃料化学学报,44(3):357-365.
[12]石油化工科学研究院.SH/T 0509—1992石油沥青四组分[S].北京:中国标准出版社,1998.
[13]洪琨,马凤云,钟梅,等.不同沥青质含量渣油临氢热转化反应特性研究[J].石油炼制与化工,2016,47(3):25-30.
[14]相文强.塔河渣油脱钒与加氢热解性能研究[D].乌鲁木齐:新疆大学,2013.
[15]陈寒梅,马凤云,刘景梅,等.塔河渣油中沥青质临氢裂解性质及其钒分布研究[J].石油炼制与化工,2014,45(8):64-70.
[16]邓文安,金环年,文萍,等.在分散型催化剂下渣油中饱和分和芳香分临氢热反应行为的研究[J].燃料化学学报,2008(5):563-571.
[17]张龙力,杨国华,阙国和,等.大港常压渣油临氮与临氢热反应过程中胶体稳定性变化研究[J].燃料化学学报,2015,39(9):682-688.
[18]张会成,颜涌捷,孙万付,等.渣油在加氢处理中的性质和结构变化规律研究[J].燃料化学学报,2008,36(1):60-64.
[19]相文强,马凤云,韩朝芳,等.塔河渣油加氢轻质化富集钒的研究[J].石油炼制与化工,2013,44(10):8-12.
[20]王少军,凌凤香,马波,等.渣油固定床加氢处理油中镍和钒的分布研究[J].燃料化学学报,2015,39(4):278-281.
[21]娄世松.石油中的镍钒存在形态及其脱除方法[J].石油化工腐蚀与防护,1996,13(4):30-32.