The Influence On The Electric Desalting Systemand Countermeasures Of Processing Heavy Oil

With the use of oil resources and the growing shortage, poor quality and heavy oil resources to accelerate the trend. Lanzhou Petrochemical Company is located inland, away from the major oil fields, oil scarcity. As companies around the refinery built or extended device have started, high-quality crude oil more scarce west, Lanzhou Petrochemical Company makes high-quality crude oil into the plant is reduced. In recent years, with the Windy City Windy City, Xinjiang Oilfield heavy oil production continues to increase, Karamay Petrochemical Company processing capacity to digest all the Windy City is not enough oil, to Lanzhou Petrochemical opportunities.Lanzhou Petrochemical Company 5.5 Mt/a crude oil distillation unit in the processing of heavy oil blending process of the Windy City, electric desalting system after running off the high salt content of crude oil, high current electric desalting tank, electric desalting water is not up to other conditions. This problem is solved by a large number of statistical production data, combined with analysis of the results, achieved the following findings.(1) by changing the proportion of heavy oil blending, combined generating device to determine the actual operating conditions of the unit at full load operating conditions most suitable for blending ratio.(2)Through the study of electric desalting process parameters to optimize the electric desalting process heavy oil tank optimal parameters.(3) by filling oil demetallization agents come off the metal agent affect the electrical current desalter, comparative analysis of heavy metals in crude Ca, Fe, V, Cu, etc. removal effect.(4) for the electric desalting effluent oil content is high, a large quantity of slag containing live, has used online backwash, the top foreign oil slagging pull operation, renovation electric desalting water pretreatment equipment and other means, cannot be an effective solution to the sewage outside row problems.Through this project, Lanzhou Petrochemical 5.5Mt/a crude oil distillation unit at full load processing Windy City oil, electric desalting system can achieve the production process requirements, wastewater discharge standards of environmental protection, reduce the amount of salt off after crude oil, an increase of Lanzhou petrochemical company benefits.