Abstract: Steam stripping is an indispensable link in the diesel refining process.By means of micro high-speed camera technology,the microscopic formation process of diesel water-in-oil emulsion under the action of water vapor is revealed.The sedimentation and stability of the emulsion is characterized by water content,turbidity,transmittance and the particle size distribution of water droplets.The water content bottleneck of the free sedimentation of the emulsion is about 200 ppm for the first time.Further,the temperature change impacting the appearance of low water content diesel emulsion is analyzed quantitatively.It is found that the critical back-turbid water content of the emulsion is about 90 ppm.The research results have improved the understanding of the stripped diesel containing emulsified water,and provided important reference for the index of the appearance and the water content of diesel oil.
王志强, 王磊, 卢浩, 杨强. 加氢精制柴油降温返浑的临界条件研究[J]. 现代化工, 2020, 40(12): 93-96.
WANG Zhi-qiang, WANG Lei, LU Hao, YANG Qiang. Critical conditions for cooling back to turbidity of hydrofining diesel oil. Modern Chemical Industry, 2020, 40(12): 93-96.
[1] 赵秀文,王国旗,聂程,等.柴油加氢精制装置分馏流程比较[J].当代化工,2013,42(5):593-595. [2] 李大东,聂红,孙丽丽.加氢处理工艺与工程[M].北京:中国石化出版社,2016:1-1683. [3] 王洋,潘超,吴仕生.原料变化对汽柴油改质装置的影响及流程优化设计[J].当代化工,2019,48(9):2068-2070. [4] 李翔宇,张凤岐,王耀伟,等.制氢装置酸性水净化工艺优化分析[J].现代化工,2019,39(11):171-174. [5] Lu Hao,Yang Qiang,Liu Seng,et al.Effect of fibrous coalescer redispersion on W/O emulsion separation[J].Separation and Purification Technology,2016,159:50-56. [6] 吴爽,储宇,王洋.减压干燥塔真空脱水在柴油加氢装置上的应用研究[J].当代化工,2018,10(47):2225-2227. [7] 栾鹏,卜磊.加氢精制柴油外观浑浊的原因分析与改进措施[J].石化技术,2019,26(6):158-159. [8] 范跃超,花卉,聂春梅,等.炼油厂加氢柴油外观雾浊的原因分析[J].炼油与化工,2017,28(2):14-16. [9] 王雷雷.催化裂化装置柴油含水影响因素分析[J].山东工业技术,2015,(13):12. [10] 吴楠,胡建强,杨士钊.喷气燃料中溶解水含量变化规律研究[J].石油炼制与化工,2015,46(9):94-96. [11] Neeraj Kumar,Hifjur Raheman.Characterization of nano-oxide added water emulsified biodiesel blend prepared with optimal emulsifying parameters[J].Renewable Energy,2019,145:308-317. [12] Noor El-Din M R,Marwa R Mishrif.A study on the effect of dynamic interfacial tension on the stability of nano-emulsified diesel[J].Journal of Molecular Liquids,2018,254:39-46. [13] 邓再辉,肖国光.一种燃油微乳液添加剂的制备及微观结构研究[J].石油炼制与化工,2009,40(2):67-72. [14] 马路遥,吕效平,韩萍芳.微乳化柴油制备及其节油率与稳定时间的研究[J].现代化工,2012,32(5):71-74. [15] 刘森,杨强,卢浩,等.重力沉降法测定水-柴油乳化液粒径分布[J].中国测试,2016,42(6):50-53.