Water-oil separating system and method using centrifugation, gravitation, expansion composite principle

Abstract

The invention relates to a combined type oil-water separating system for onshore treatment stations and offshore oil production platforms, wherein a liquid inlet and a liquid outlet of a current divider are communicated with a horizontal total liquid inlet pipe, a vertical pipe and a lower horizontal pipe; the vertical pipe is communicated with a bend pipe; the lower horizontal pipe is connected with an input port of a helical pipe, the helical pipe is connected with the inner part of a fourth separating box body, and communicated with a second settlement separating box body, and the top part of the helical pipe is communicated with the top part of a fourth settlement separating box body by a middle pipe; the outlet and the middle part of the bottom part of the side wall of the fourth settlement separating box body, which corresponds to the inlet, is provided with horizontal drain pipes and a horizontal oil discharge pipe respectively, and the other end of the horizontal oil discharge pipe penetrates the middle part of a third settlement separating box body; an upper horizontal pipe is communicated with a first helical pipe, the other outlet of the first helical pipe is connected with the inner part of the third settlement separating box body, and the bottom parts and the side walls of the top parts of the first and the third settlement separating box bodies are connected by pipes; the two horizontal drain pipes are provided with a water outlet pipe and an oil outlet pipe respectively.

Description

technical field [0001] The invention relates to a device and method for separating oil-water two-phase mixed liquid, in particular to a composite oil-water separation system and separation method applied to onshore and offshore oil production platforms. Background technique [0002] In many industries, such as petrochemical enterprises, oil-water separation equipment is an important production equipment. Separation technology is crucial to the development of the industry. [0003] The separation principles currently used are: gravity, centrifugation, filtration, electrostatic, demulsification, etc. The initial separation equipment generally adopts one separation principle for oil-water separation. In recent years, the combination of multiple separation principles for separation equipment is the development direction. For example, the patent publication number: CN2569538Y, a high-efficiency oil-water separator, describes a separation device that mainly adopts the principle ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above oil-water separation device using a single separation principle, when the parameters of the incoming liquid change during the separation process, the processing efficiency is significantly reduced, thereby providing a separation method using centrifugal, gravity, expansion, etc. The separation method is a combination of principles. This method is an effective way to increase separation efficiency, improve separation technology, and reduce the weight of the separator. It is suitable for both onshore oilfields and offshore oilfields, and has a good industrial application prospect.

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