Top-reduced oil-water electrostatic coalescence separation device

Abstract

The invention discloses a top-reduced oil-water electrostatic coalescence separation device which comprises a horizontal cylinder, a vertical cylinder, a first electrostatic coalescence unit, a second electrostatic coalescence unit and a transformer, a weir plate is vertically arranged on the right side in the horizontal cylinder, and the vertical cylinder is vertically inserted into the left side of the horizontal cylinder; a first electrostatic coalescence unit and a second electrostatic coalescence unit are sequentially arranged between the horizontal cylinder and the weir plate from left to right, the first electrostatic coalescence unit comprises a plurality of first corrugated electrode plates which are arranged in parallel in the front-back direction, the second electrostatic coalescence unit comprises a plurality of electrode plates which are arranged in the up-down direction, and a liquid distribution component is arranged at the bottom of the vertical cylinder. An upper tube plate and a lower tube plate are sequentially and horizontally arranged in the vertical cylinder from top to bottom, a rotational flow tube is vertically and fixedly arranged on the lower tube plate, and a rotational flow exhaust tube is arranged at the top of the rotational flow tube. Three-stage separation of oil, gas and water can be realized, the separation process is greatly simplified, and intensive separation is realized.

Description

technical field [0001] The invention relates to the technical field of vacuum tower systems for atmospheric and vacuum devices in the oil refining industry, in particular to an electrostatic coalescence and separation device for top reduction oil and water. Background technique [0002] As oilfield exploitation gradually enters the middle and late stages, the water content of crude oil increases sharply. At the same time, the wide application of tertiary oil recovery technologies such as chemical flooding intensifies the emulsification of crude oil. The emulsification of various equipment at the top of the pressure tower is serious. At present, the top-reducing oil-water electrostatic coalescence separation device in the refinery mainly absorbs the top-reducing oil from each evacuated condenser, as well as part of the top-reducing gas and sulfur-containing sewage, and separates oil, gas, and water into three phases, and discharges them respectively to Reduced roof oil pumps...

AI Technical Summary

Problems solved by technology

However, the disadvantages are: oil-water separation is only performed through multi-stage electrostatic coalescence, without combining the technical advantages of gravity sedimentation and cyclone separation, and in addition, it does not consider the associated gas carried by equipment such as plate heat exchangers and electric desalination tanks in the pre-process process The removal, the scope of application is narrow

[0004] The internal structure of the existing top-reducing oil-water electrostatic coalescence separation device is not effective for highly emulsified crude oil removal, and at the top of the decompression tower, the flow rate of oil-water is very fast, and the boundary position is blurred and it is difficult to completely separate, which is easy to cause top-reducing oil. In addition, the oil-water separation efficiency is low, and the mixed medium enters the subsequent process flow, which brings certain safety hazards to the sour water stripping unit and hydrogenation unit

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