A high-efficiency electric dehydrator

Abstract

The invention discloses a high-efficiency electric dehydrator and belongs to the technical field of electric dehydration of crude oil. The high-efficiency electric dehydrator is characterized by comprising an electric dehydrator shell (1), and an oil inlet pipe (2), a water outlet pipe (3) and an oil outlet pipe (6) which are arranged in the electric dehydrator shell (1), wherein the oil inlet pipe (2) and the water outlet pipe (3) are arranged on the lower part of the electric dehydrator shell (1); the oil outlet pipe (6) is arranged on the upper part of the electric dehydrator shell (1); theinlet of the oil inlet pipe (2) extends out of the outer part of the electric dehydrator shell (1) and is connected with a reciprocating piston pump (9); an electrode and a suspension needle grounding electrode (5) are arranged in the electric dehydrator shell (1); the suspension needle grounding electrode (5) vertically penetrates through a runner inside the electrode; and one side on the lowerpart of the electric dehydrator shell (1) is grounded. With the adoption of the structure that the suspension needle grounding electrode vertically penetrates through the runner inside the electrode,the electrode spacing is greatly narrowed, so that the electric field of the same intensity can be generated at a lower voltage, and the coalescence rate of water drops can be effectively improved. Therefore, the dehydration efficiency is improved, and the treatment capacity is increased.

Description

technical field [0001] A high-efficiency electric dehydrator belongs to the technical field of electric dehydration of crude oil. Background technique [0002] Crude oil electric dehydration technology is a technology used to remove moisture from aqueous crude oil. It has the advantages of high efficiency and large processing capacity, so it has been widely used. The principle of electric dehydration technology: under the action of an electric field, due to the difference in conductivity between oil and water, the water droplets in the water-containing crude oil are polarized, and there will be a dipole coalescence force between the polarized water droplets that makes the water droplets attract each other, and the electric field force will polarize Water droplets are stretched and deformed, and the deformation of water droplets will weaken the strength of the interfacial film between water droplets, thereby promoting the coalescence of water droplets. After the coalescence o...

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Problems solved by technology

However, with the late stage of oilfield exploitation, the nature of crude oil produced is getting worse, and the development of offshore oilfields, the demand for electric dehydrators with better treatment effect and smaller equipment volume is increasing, and there are more and more scholars at home and abroad Focusing on the first stage of water droplet coalescence, the influence of other factors on water droplet collision is studied. However, in the design of electric dehydrator, electric dehydrator using related principles is relatively rare

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