Heat strengthening of double-field coupling demulsification of industrial waste oil emulsion
Tóm tắt
Demulsification of highly aqueous waste oil is difficult to complete by a single process efficiently. The dewatering-type hydrocyclone is used as the unit body and includes the high-voltage electrode to realize demulsification and dewatering ability of the coupling of high-voltage electric and swirling centrifugal fields in waste oil emulsion efficiently. This study considers the influence of heating temperature on demulsification in coupled field. Thus, a heat-strengthening double-field demulsification process is proposed. Specifically, the effect of heat strengthening on demulsification, dewatering, and separation of double-field coupled by numerical simulation and experimental methods was investigated. The temperatures of heat-strengthening were 60 °C, 65 °C, 70 °C, and 75 °C. The results show that the separation efficiency predicted by numerical simulation are in good agreement with the experimental results. And the heat-strengthening can effectively enhance the separation effect of two fields and improve the efficiency of the oil–water separation of industrial waste oil. When the heating temperature is raised from 60 to 65 °C, and from 65 to 70 °C, the separation efficiency increases by approximately 4.1% and 6.7%, respectively.
Tài liệu tham khảo
Praporgescu G, Mihalescu S (2011) Study the environmental impact of lubricants used in mechanical systems. Ann Univ Petroşani Mech Eng 13:131–136
Su SL, Liew RK, Jusoh A, Cheng TC, Ani FN, Chase HA (2016) Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques. Renew Sustain Energy Rev 53:741–753
Yi H, Zhong CH, Zhang WD, Xiang SU, Wang XX (2015) Research status and prospects of waste lubricating oil combined technology. Mod Chem Ind 35:19–22
Rincon J, Canizares P, Garcia MT (2005) Regeneration of used lubricant oil by polar solvent extraction. Ind Eng Chem Res 44:4373–4379
Gu G, Liu G, Chen B, Tian M, Wu HY (2015) Research progress of physical demulsification technologies and equipment about W/O emulsions. Chem Ind Eng Prog 34:319–324
Gong H, Zhang X, Peng Y, Shang HH, Wang JS (2016) Three-field coupled procedure and equipment for demulsification and dehydration of waste oil. Mod Chem Ind 36:164–167
Pan S, Zhang X, Wu F (2010) The study of demulsification in oil water emulsion. J Chongqing Technol Bus Univ (Nat Sci Ed) 27:158–163
Eow JS, Ghadiri M, Sharif AO, Williams TJ (2001) Electrostatic enhancement of coalescence of water droplets in oil: a review of the current understanding. Chem Eng J 85:357–368
Bailes PJ (1992) Electrically augmented settlers and coalescers for solvent extraction. Hydrometallurgy 30:417–430
Eow JS, Ghadiri M (2001) Electro-mechanical coalescer-separators for the separation of aqueous-in-oil dispersions, UK Patent GB 2377397A, publ. date January 15, 2001
Eow JS, Ghadiri M (2002) Electrocoalesce-separators for the separation of aqueous drops from a flowing dielectric viscous liquid. Sep Purif Technol 29:63–77
Yang X (2009) Drop dynamic of W/O emulsion under the combination of centrifugal field and pulsed electric field. China University of Petroleum, Beijing
Wang J (2009) Study of the rule of emulsion’s concentration and sedimentation under the combination of high frequency-pulse electric and centrifugal fields. China University of Petroleum, Beijing
Li Q, Chen J, Meng L, Pan Z, Wang K (2014) Investigation of water separation from water-in-oil emulsion using high frequency pulsed AC electric field by new equipment. J Dispers Sci Technol 36:918–923
Mhatre S, Vivacqua V, Ghadiri M, Abdullah AM, Al-Marri MJ, Hassanpour A, Hewakandamby B, Azzopardi B, Kermani B (2015) Electrostatic phase separation: a review. Chem Eng Res Des 96:177–195
Zolfaghari R, Fakhru’L-Razi A, Abdullah LC, Elnashaie SSEH, Pendashteh A (2016) Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry. Sep Purif Technol 170:377–407
Sun L (2009) Study of the rule of emulsion’s concentration and sedimentation under the combination of high frequency-pulse electric and centrifugal fields. China University of Petroleum, Beijing
Zhang Y, Liu Y, Ji R, Wang F, Cai B, Li H (2011) Application of variable frequency technique on electrical dehydration of water-in-oil emulsion. Colloids Surf A 386:185–190
Cao Y, Jin Y, Li J, Zou D, Chen X (2016) Demulsification of the phosphoric acid–tributyl phosphate (W/O) emulsion by hydrocyclone. Sep Purif Technol 158:387–395
Eow JS, Ghadiri M, Sharif AO (2002) Electrostatic and hydrodynamic separation of aqueous drops in a flowing viscous oil. Chem Eng Process 41:649–657
Eow JS, Ghadiri M, Sharif AO (2007) Electro-hydrodynamic separation of aqueous drops from flowing viscous oil. J Pet Sci Eng 55:146–155
Yang D, Xu M, He L, Luo X, Lu Y, Yan H, Tian C (2015) The influence and optimisation of electrical parameters for enhanced coalescence under pulsed DC electric field in a cylindrical electrostatic coalescer. Chem Eng Sci 138:71–85
Murthy YR, Bhaskar KU (2012) Parametric CFD studies on hydrocyclone. Powder Technol 230:36–47
Ahmed MA, Nadia GK, Mahmoud RN (2011) Functions of demulsifiers in the petroleum industry. Sep Sci Technol 46:1144–1163
Hosseini M, Shahavi MH (2012) Electrostatic enhancement of coalescence of oil droplets (in nanometer scale) in water emulsion. Chin J Chem Eng 20:654–658
Kwon WT, Park K, Han SD, Yoon SM, Kim JY, Bae W, Rhee YW (2010) Investigation of water separation from water-in-oil emulsion using electric field. J Ind Eng Chem 16:684–687
Zhang Y (2012) Dehydration efficiency of water-in-model oil emulsions in high frequency pulsed DC electrical field: effect of physical and chemical properties of the emulsions. J Dispers Sci Technol 33:1574–1581
Peng Y, Liu T, Gong H, Wang J, Zhang X (2015) Effect of pulsed electric field with variable frequency on coalescence of drops in oil. RSC Adv 5:31318–31323
Mousavichoubeh M, Ghadiri M, Shariaty-Niassar M (2011) Electro-coalescence of an aqueous droplet at an oil–water interface. Chem Eng Process 50:338–344
Motin A (2015) Theoretical and numerical study of swirling flow separation device for oil-water mixtures. Michigan State University, East Lansing
Schutz S, Gorbach G, Piesche M (2009) Modeling fluid behavior and droplet interactions during liquid-liquid separation hydrocyclones. Chem Eng Sci 64:3935–3952
Tian J, Ni L, Song T, Olson J, Zhao J (2018) An overview of operating parameters and conditions in hydrocyclones for enhanced separations. Sep Purif Technol 206:268–285
Peng Y, Liu T, Gong H, Zhang XM (2016) Dehydration of waste lubricating oil by three fields: swirl centrifugal field, pulse electric field and vacuum temperature field. Appl Petrochem Res 6:389–395
Huang X (1995) The method of Maxwell stress tensor and its application. J Nanjing Norm Univ 14:41–43
Atten P (1993) Electro-coalescence of water droplets in an insulating liquid. J Electrost 30:259–270
Fluent AN (2013) ANSYS fluent theory guide. ANSYS Inc, Canonsburg
Fluent AN (2013) ANSYS fluent UDF manual. ANSYS Inc, Canonsburg
Noroozi S, Hashemabadi SH (2011) CFD analysis of inlet chamber body profile effects on de-oiling hydrocyclone efficiency. Chem Eng Res Des 89:968–977
Ata S, Pugh RJ, Jameson GJ (2011) The influence of interfacial ageing and temperature on the coalescence of oil droplets in water. Colloids Surf A 374:96–101
Li Y, Gong H, Dong M, Liu Y (2016) Separation of water-in-heavy oil emulsions using porous particles in a coalescence column. Sep Sci Technol 166:148–156
Binner ER, Robinson JP, Silvester SA, Kingman SW, Lester EH (2014) Investigation into the mechanisms by which microwave heating enhances separation of water-in-oil emulsions. Fuel 116:516–521
Gong H, Yu B, Dai F, Peng Y, Shao J (2018) Simulation on performance of a demulsification and dewatering device with coupling double fields: swirl centrifugal field and high-voltage electric field. Sep Purif Technol 207:124–132