化学-超声联合处理高凝原油技术研究
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摘要
针对高凝点原油粘度和凝点高、流动性差的特点,采用化学降凝和超声降凝及其联合处理法研究其对高凝点原油的降凝效果。结果表明,在13种降凝剂,在加量为质量分数为500 mg/L时,EVA可使原油凝点由原来的48℃降低至12℃,降凝效果最好;在75℃,EVA加量400 mg/L,超声输出功率为40 W,反应时间为0.5 h条件下,高凝点原油的凝点可由48℃降低至4℃,降凝率和降粘率均达超过91%。
Chemical pour point depressant,ultrasound and its joint treatments were investigated on the pour point depression of the high pour point crude oil. The results showed that the pour point of the crude oil could be depressed from 48 ℃ to 12 ℃ by EVA among the 13 kinds of pour point depressant at the dosage of 500 mg/L. The pour point of the crude oil under the EVA and ultrasonic combined treatment could be reduced from 48 ℃ to 4 ℃ when the EVA dosage of was 400 mg/L,ultrasonic output power was40 W and the reaction time was 0. 5 h at 75 ℃,the pour point depression and the viscosity reduction rate were both over 91%.
Chemical pour point depressant,ultrasound and its joint treatments were investigated on the pour point depression of the high pour point crude oil. The results showed that the pour point of the crude oil could be depressed from 48 ℃ to 12 ℃ by EVA among the 13 kinds of pour point depressant at the dosage of 500 mg/L. The pour point of the crude oil under the EVA and ultrasonic combined treatment could be reduced from 48 ℃ to 4 ℃ when the EVA dosage of was 400 mg/L,ultrasonic output power was40 W and the reaction time was 0. 5 h at 75 ℃,the pour point depression and the viscosity reduction rate were both over 91%.
引文
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[17]赵荣祥,曹祖宾,岳坤霞,等.降凝剂的应用概况[J].当代化工,2003,12:55-57.
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[3]张洁,李小龙,陈刚.小分子稠油流动性改进剂及其作用机理[J].石油学报:石油加工,2013,29(6):52-57.
[4]黄序韬,梁淑寰.声波采油的机理与特点研究[J].石油学报:石油加工,1993,14(4):110-115.
[5]Fluch H W.Separation of oil and water from oil refinery sludge[J].Filtration&Separation,1982(9):18-22.
[6]Anderson Tor,Peters H Setal.Waxcrystal size distribution versus composition[J].Fuel,2001,80:1635-1638.
[7]李俊,江绍静,屈撑囤,等.热萃取污油的降凝处理研究[J].西安石油大学学报:自然科学版,2011,7(9):75-78.
[8]陈刚,苏慧君,栗菁,等.延长管输原油的组分特征及其析蜡行为[J].石油学报:石油加工,2015,31(1):104-111.
[9]陈刚,张洁,李小龙.原油组分相互作用对析蜡的影响机理研究[J].石油学报:石油加工,2013,29(5):91-97.
[10]Moussa Kane’a,Madeleine Djabourova,Jean-Luc Volleb,et al.Morphology of paraffin crystals in waxy crude oils cooled in quiescent conditions and underflow[J].Fuel,2003,82:127-135.
[11]邸进申,张诚,李英杰,等.原油流动性改进剂的制备及应用[J].石油炼制与化工,1997,28(8):43-46.
[12]陈刚,张洁.原油流动性改进剂研究进展[J].天然气与石油,2013,31(2):1-5.
[13]苏慧君,陈刚,栗菁,等.玉门稠油组分特征及其对结蜡行为的影响研究[J].燃料化学学报,2014,42(2):187-192.
[14]Radabaugh E C,George H.Effect of internal pressure on flexibility and stress intensification factor of curved pipe or elbow[J].ASME,1957,79:938-948.
[15]海沙尔.超声波降粘技术的试验研究[J].钻采工艺研究,1997,21(1):13-18.
[16]林日亿,李兆敏,黄斌,等.塔河油田自喷深井井筒电加热降粘技术研究[J].中国石油大学学报:自然科学版,2006,30(4):67-70.
[17]赵荣祥,曹祖宾,岳坤霞,等.降凝剂的应用概况[J].当代化工,2003,12:55-57.
[18]王敏,赵静.原油降凝剂及其在我国原油中的应用[J].现代化工,2001,21(11):41-44.