Low-oil-content sewage deoiling and desanding cyclone purification device

Abstract

The utility model discloses a low-oil-content sewage deoiling and desanding cyclone purification device, and mainly solves the problem that produced liquid of a sand-containing oil field is difficultto separate efficiently. The device is provided with a cyclone separation chamber, a cyclone separation chamber upper cover, a tangential inlet disc, an inlet disc, a spiral flow channel, an intermediate oil-water separator, an oil-sand cyclone separator conical barrel and an oil-sand cyclone separator cylindrical barrel, wherein the whole oil-sand cyclone separator cylindrical barrel is cylindrical, the upper end of the oil-sand cyclone separator cylindrical barrel is in threaded connection with the cyclone separator conical barrel, and the lower end of the oil-sand cyclone separator cylindrical barrel is in bolted connection with the cyclone separation chamber; the oil-sand cyclone separation chamber upper cover, the tangential inlet disc; and the inlet disc and the cyclone separation chamber are fixed through bolts, the spiral flow channel is inserted into the intermediate oil-water separator, and the top end of the spiral flow channel is inserted into a round hole in the axis of the cyclone separation intermediate upper cover. According to the device, oil in the produced liquidof the sand-containing oil field with low oil concentration is separated out, the separation efficiency of the produced liquid of teh oil field is improved, and the feasibility and applicability of an oil-water separation system are enhanced.

Description

technical field [0001] The invention relates to a device for separating and treating sandy oilfield production fluid and sewage, which is applied in the fields of petroleum and chemical industry. Background technique [0002] At present, hydrocyclones have been widely used in petroleum, chemical industry, metallurgy, environmental protection, electric power, water treatment, etc. due to their advantages such as strong adaptability, simple structure, small size, easy loading and unloading, efficient and flexible separation, simple process and continuous operation. field. The principle of the hydrocyclone is to inject the mixed liquid into the inner cavity of the hydrocyclone from the tangential inlet with a huge pressure, and then rotate around the axis at a high speed to generate a large centrifugal force. The phases with different densities in the mixed liquid are affected by the The centrifugal force is different, so their running speed, acceleration and direction in the ...

AI Technical Summary

Problems solved by technology

However, these existing hydrocyclones are less efficient when dealing with sandy oilfield production fluids. The reason is that because these production fluids contain sandstones and lower concentrations of oil, more sandstones are easy to produce. The cyclone is blocked and the oil cannot be separated, which affects the separation efficiency of the cyclone

Images