液液分离旋流器在储油罐清洗中的应用
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摘要
储油罐需要定期进行开放检查、修理,对储油罐进行清罐,去除油罐底部的淤渣以及罐壁上的凝油和凝蜡。清罐的主要方法为机械清罐法,分为同质油清洗和热水清洗两个步骤。在罐清洗的过程中,使用液液分离旋流器进行轻重油及油水两相的分离,使轻质油和水能够循环使用,提高储罐清洗的效率的同时,降低了储罐清洗成本。通过现场试验可知,液液分离旋流器对原油的分离效果较好,底流与溢流的比重可达到0.03g/cm~3左右;对于油水分离,分离出底流与溢流比重差亦可达到0.03g/cm~3,底流与溢流粘度差在40mpa·s以上,应用效果较好。
Oil tanks need to be regularly opened for inspection and repair. Clear the tank, removal of the bottom of the tank sludge, as well as on the wall of the condensate and wax. The main method of cleaning tank is mechanical cleaning, which is divided into two steps: homogeneous oil cleaning and hot water cleaning. In the process of tank cleaning, the liquid-liquid hydrocyclone is used to separate the light oil and heavy oil, the oil and water two phases, so that the light oil and water can be recycled, and the efficiency of the tank cleaning is improved, and the cost of the tank cleaning is reduced. Through the field test, it is known that the separation effect of liquid-liquid hydrocyclone is better, the proportion of bottom current and overflow can reach about 0.03 g/cm~3, and the difference of bottom current and overflow specific gravity can also reach 0.03 g/cm~3 for oil and water separation, and the difference between bottom flow and overflow viscosity is 40 mpa·s, and the application effect is better.
Oil tanks need to be regularly opened for inspection and repair. Clear the tank, removal of the bottom of the tank sludge, as well as on the wall of the condensate and wax. The main method of cleaning tank is mechanical cleaning, which is divided into two steps: homogeneous oil cleaning and hot water cleaning. In the process of tank cleaning, the liquid-liquid hydrocyclone is used to separate the light oil and heavy oil, the oil and water two phases, so that the light oil and water can be recycled, and the efficiency of the tank cleaning is improved, and the cost of the tank cleaning is reduced. Through the field test, it is known that the separation effect of liquid-liquid hydrocyclone is better, the proportion of bottom current and overflow can reach about 0.03 g/cm~3, and the difference of bottom current and overflow specific gravity can also reach 0.03 g/cm~3 for oil and water separation, and the difference between bottom flow and overflow viscosity is 40 mpa·s, and the application effect is better.
引文
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[2] 高志洋. 浅谈石化企业大型储油罐检维修工程施工安全管控[J]. 当代化工研究, 2017,(7):11～12.
[3] 王桦龙. 国内储油罐清洗技术进展[J]. 化学工程与装备, 2014,(4):167～169.
[4] 何金朋, 蒋建忠, 袁惠新,等. 背压对脱水除油一体式液液分离旋流器流场及分离性能影响的研究[J]. 流体机械, 2016, 44(5):8～12.
[5] 舒朝晖, 陈文梅, 肖新才,等. 除油旋流器分流比与基本性能的关系探讨[J]. 流体机械, 2001, 29(5):12～15.
[6] Simms K M et al.Testing of the vortoildeoiling hydro-cyclone using Canadian offshore crude oil.In:Proc.4th Int.Congress on Hydrocyclones, Southampton,UK, 1992;9:295～308.
[7] 庞学诗. 水力旋流器技术与应用[M]. 中国石化出版社, 2011.
[8] 马卫国, 胡泽明, 薛敦松. 油水分离水力旋流器的研究与应用综述[J]. 国外石油机械,1995,(2):71～76.