The internal structure of electric desalting vessels is an important factor affecting the performance of crude oil dehydration and desalination.The flow and distribution of oil-water emulsions are generally not fully ...The internal structure of electric desalting vessels is an important factor affecting the performance of crude oil dehydration and desalination.The flow and distribution of oil-water emulsions are generally not fully considered in the traditional design of a desalter.Computational fluid dynamics(CFD)simulations enable a deep understanding of oil-water two-phase flows,thereby providing a scientific basis for optimizing structural design of desalters.In this paper,CFD simulations are used to study the flow of oil-water two-phase fluid in a desalting vessel with advection squirrel-cage structure in a SINOPEC refinery,revealing the defects in its electric field layout.A structural improvement scheme is then proposed,and a medium-scale bypass test is conducted.The test results show that the single-stage salt removal rate is increased from 85.4%to 92.1%.The water and salt contents in desalted oil and the oil content in brine are also significantly improved,providing a solid foundation for transformation of the related industrial equipment.展开更多
基金supported by the SINOPEC research project“Research and development of electric desalting technology and equipment for heavy crude oil”(Project No.318020-9).
文摘The internal structure of electric desalting vessels is an important factor affecting the performance of crude oil dehydration and desalination.The flow and distribution of oil-water emulsions are generally not fully considered in the traditional design of a desalter.Computational fluid dynamics(CFD)simulations enable a deep understanding of oil-water two-phase flows,thereby providing a scientific basis for optimizing structural design of desalters.In this paper,CFD simulations are used to study the flow of oil-water two-phase fluid in a desalting vessel with advection squirrel-cage structure in a SINOPEC refinery,revealing the defects in its electric field layout.A structural improvement scheme is then proposed,and a medium-scale bypass test is conducted.The test results show that the single-stage salt removal rate is increased from 85.4%to 92.1%.The water and salt contents in desalted oil and the oil content in brine are also significantly improved,providing a solid foundation for transformation of the related industrial equipment.
