Oil-water separation system with efficient electromagnetic synchronous cooperation

Abstract

The invention relates to an oil-water separation system with efficient electromagnetic synchronous cooperation, comprising a reinforced coalescing device and a precipitating separating device and characterized in that a drain pipe liquid distributor is arranged at the inner bottom of the precipitating separating device, the reinforced coalescing device is provided with an electromagnetic coalescing component, a liquid-distributing orifice plate is arranged between an inlet head and the electromagnetic coalescing device, the electromagnetic coalescing component includes an electric field generating component and a magnetic field exciting component which are in coaxial distribution; an electric field and a magnetic field are orthogonally distributed to arrive at synchronous cooperation. Theelectric field generating component includes a grounding external electrode and an axial electrode coated with an insulating sleeve, allowing electric field intensity to be increased to 350 kV/m; themagnetic field exciting component includes outer and inner coils coaxially and hermetically sleeving the external electrode, the outer coil is greater than the inner coil in the number of turns, and the outer coil and the inner coil are contained in a self-circulating cooling sleeve. The oil-water separation system has the advantages that oil-water separation efficiency is significantly improved,oil-water separation range is significantly widened, the system is capable of treating oil-water emulsions having a water content of up to 40%, and therefore, the system is widely applicable to efficient and stable equipment and facilities for oil-water separation on land and sea.

Description

technical field [0001] The invention belongs to the technical field of multiphase separation of oil and gas gathering and transportation systems, and in particular relates to an oil-water separation system with high-efficiency electromagnetic synchronous synergy. Background technique [0002] As major oilfields enter the middle and later stages of development, enhanced oil recovery methods such as water injection, agent injection and polymer injection are more and more widely used, and the emulsification of oil-water mixture produced from the wellhead is becoming more and more serious. The water content in crude oil increases the proportion of ineffective work in the power system, increases the proportion of ineffective heat energy in the thermal system, and easily causes corrosion and scaling of storage and transportation equipment. Therefore, it is of great significance to study the efficient separation technology of oil-water emulsion to improve the safe and stable operat...

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Problems solved by technology

Therefore, the lower end of the electrode of this device is located at the water outlet, and the lower end of the electrode will be in the water layer for a long time, which has a great impact on the life of the electrode insulation material.

In addition, after the emulsion is treated by the electric field and magnetic field, it still takes a considerable time for gravitational settling to separate the water. Therefore, in order to ensure the gravitational settling time, the axial dimension of the device is relatively large, which will also seriously affect its installation and maintenance. fixed

[0006] The magnetoelectric dehydration device disclosed in the above-mentioned patent mainly has four problems: first, when the water content of the emulsion is high on the bare metal electrode plate, the collapse electric field effect caused by the conduction of the water droplet chain may appear in the emulsion flow channel, and the voltage is relatively high When the high voltage breakdown medium may occur between the plates, the electric field collapse may occur. Therefore, this type of device is only suitable for emulsions with low water content, and the electric field strength is limited; second, the size of the device, the separation of coalescence and sedimentation The one-piece vertical design will increase the axial size of the device, which is not conducive to installation and fixing; third, the electromagnet generates heat, and when excited to generate a high-intensity magnetic field, it is accompanied by a large amount of heat release. The overheating of the coil makes it difficult to increase the magnetic field strength and may even cause a short circuit accident

More importantly, the separation efficiency of the existing technology is low, especially for the treatment of high-water emulsions. Obviously, it is necessary to achieve efficient separation of oil-water emulsions and improve the stability and safety of device operation.

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