Investigation of factors affecting on viscosity reduction of sludge from Iranian crude oil storage tanks
投稿时间:2017-05-27  
英文关键词:Surfactant, Emulsion, Sludge, Storage tank, Crude oil
基金项目:The authors express their sincerest thanks to R&D department, operation and utilization units of Kharg Oil Terminal Co. for providing us with the sludge from the crude oil storage tanks.
作者单位
Masoumeh Hassanzadeh Chemical Process Design Research Group, ACECR, Faculty of Engineering, University of Tehran, Tehran, Iran 
Leila Tayebi Chemical Process Design Research Group, ACECR, Faculty of Engineering, University of Tehran, Tehran, Iran 
Hedieh Dezfouli Chemical Process Design Research Group, ACECR, Faculty of Engineering, University of Tehran, Tehran, Iran 
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英文摘要:
      Crude oil is a kind of water/oil emulsion, which the oil phase consists of organic molecules with different molecular weights such as alkanes, paraffin, asphaltene, and resins. Due to the change in physicochemical conditions during the production, transportation, storage, and refining, heavier molecules can precipitate from crude oil. Thus, viscous sludge formed at the bottom of storage tanks can cause many problems including reduction of storage capacity of tank, oil contamination, corrosion, repair costs, environmental pollution, etc. The reduction of sludge viscosity can be achieved by reduction of its interfacial tension. In this study, different chemical and physical factors, influencing prepared emulsions (made of sludge, water and surfactant), such as surfactants, solvents, temperature, pressure, and mixing conditions were investigated. Results showed that non-ionic surfactants (like bitumen emulsifier), and solvents (such as mixed xylene, AW- 400, and AW-402), injection of additives, applying pressure, and mixing operations had a positive effect on reduction of emulsion viscosity. All experiments were carried out with sludge obtained from crude oil storage tanks at Kharg Island, Iran.
Masoumeh Hassanzadeh,Leila Tayebi,Hedieh Dezfouli,2018.Investigation of factors affecting on viscosity reduction of sludge from Iranian crude oil storage tanks.Petroleum Science,(3):634~643.
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