Aged effluent oil treatment technology used for oil fields and oil refineries

Abstract

The invention discloses an aged effluent oil treatment technology used for oil fields and oil refineries, which comprises the following steps of: tempering the effluent oil: adding hot water, an emulsion breaker and a cleaning agent in a modulating pot, stirring and heating, standing in the pot, and lifting and pumping from the bottom part to a solid-liquid separation sledge material filter; performing solid-liquid separation: heating the filtered oil water mixture and small particle solid impurities by using a material heater, entering the inlet of a horizontal spiral centrifuge, meanwhile, successively adding a flocculent according to flow, discharging aged oil solid impurity wastes from the solid outlet of the horizontal spiral centrifuge, collecting the separated out solid oil water mixture by a buffer pot, and lifting and pumping to an oil-water separation sledge material inlet by an oil water lifting pump; and performing oil-water separation: finally heating the oil water mixture in an oil water separating pot, standing, settling, entering the separated out crude oil in an oil chamber, and automatically pumping to a crude oil external transportation process by a purified oil lifting pump. By adoption of the treatment technology, the technical problem of difficulty in treating various aged effluent oils which are generated in production process of oil fields and are difficult to treat is likely to be solved.

Description

technical field [0001] The invention relates to an oilfield waste oil treatment process, which is used for centralized treatment of various difficult-to-handle waste oils in oilfields and refineries, and for the recovery of crude oil resources, including aging oil in sewage stations, ground oil in oil fields, acidification and fracturing flowback oil And a series of difficult to handle dirty oil. Background technique [0002] With the development of oilfields in the middle and later stages, large oilfields have successively produced a large number of difficult-to-handle aged dirty oils, resulting in a waste of equipment processing capacity and bringing hidden dangers to the system. There are many main sources of aged waste oil, such as sewage sedimentation, waste oil recovered from flotation system, oil-water transition layer in dehydrator, oil well acidification, fracturing and other measures, drilling, operation of highly emulsified crude oil emulsion and ground oil, sewag...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a treatment process for aged dirty oil used in oil fields and refineries, to solve the technical problems of various difficult-to-handle aged dirty oils produced in the production process of oil fields; and to solve the problem of different densities in aged oil Separation of solid dregs; It also solves the problem of oil, water, and solid separation that has not been solved in the back-blending process; At the same time, it solves the problem of low safety factor, high labor intensity of workers, intermittent production and adaptation to the solid content of waste oil in conventional centrifugation. poor sex problem

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