Oil-water separation device

Abstract

The invention provides an oil-water separation device. An oil-water separation pipeline is arranged in a three-dimensional space according to a volume expansion and speed reduction principle, and water and oil in crude oil produced liquid or oil-containing sewage are separated by layer-by-layer precipitation. The oil-water separation device comprises a liquid inlet pipe, middle-layer separation pipes, a middle-layer communication pipe and a liquid discharging pipe, which are stacked at intervals; at least two middle-layer separation pipes are arranged, are arranged at interval in parallel, andare horizontally and vertically communicated through at least one middle-layer communication pipe; each middle-layer separation pipe is vertically communicated with the liquid inlet pipe or the liquid discharging pipe through a vertical communication pipe in an up-down corresponding manner; two ends of the liquid inlet pipe are of a liquid inlet and an oil outlet of an oil-water mixed solution; one end of the liquid discharging pipe is sealed and the other end of the liquid discharging pipe is of a liquid outlet; an end opening of each middle-layer separation pipe is sealed; extending directions of the liquid inlet pipe and the liquid discharging pipe are consistent; the extending direction of the liquid inlet pipe is parallel or vertical to the extending direction of each middle-layer separation pipe.

Description

technical field [0001] The invention relates to the field of oil-water separation equipment, in particular to an oil-water separation device that sets an oil-water separation pipeline in a three-dimensional space according to the principle of capacity expansion and speed reduction, and settles layer by layer to separate water and oil in crude oil production fluid or oily sewage. Background technique [0002] In the oil extraction industry, as most oilfield development enters the high water cut stage in the middle and late stages, the water cut of crude oil production fluid continues to increase. The water content in the produced fluid not only causes rapid equipment aging during the storage, transportation and refining process of crude oil, increases the operating load, and increases energy consumption, but also easily causes tower flushing, corrosion and blockage of pipelines, abnormal operation of atmospheric and vacuum distillation towers, and catalyst damage. to serious ...

AI Technical Summary

Problems solved by technology

This traditional process can effectively remove most of the suspended water in crude oil, and the equipment is simple and easy to operate; however, the scale of the settling equipment is large, the settling process takes a long time, the energy consumption is high due to heating, and there are environmental problems due to the addition of a large amount of chemical agents

[0005] In addition, there are other new processes or devices, such as the use of three-phase separators or hydrocyclones for pre-dehydration, but the dehydration efficiency and adaptability are still not ideal; and when the incoming liquid pressure is low, energy needs to be added to increase the pressure In order to meet the dehydration requirements; while the traditional two-layer T-shaped pipe is mainly distributed along the longitudinal and vertical directions, the oil-water separation efficiency is not ideal

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