High-efficient electric desalting apparatus

Abstract

An electric desalination and dehydration equipment designed using the principle of high-voltage electrostatic separation in the petrochemical industry, mainly including a transformer, a control circuit, an electric desalination tank, and a horizontal large plate, a horizontal positive plate, a horizontal negative plate, and a The vertical positive plate connected to the horizontal positive plate and the vertical negative plate connected to the horizontal negative plate, regardless of whether the power supply is in the positive half cycle or the negative half cycle, will form a vertical strong electric field between the two horizontal plates, and between the vertical positive and negative plates. Form a double voltage DC horizontal strong electric field, and at the same time form an AC vertical weak electric field between the vertical positive and negative plates and the water layer, which has good desalination and dehydration effects, and is not affected by the water content and emulsification degree of crude oil, and always maintains good desalination and dehydration effects ;The reactor is omitted before the primary coil of the transformer, so that the working voltage is stable, the transformer capacity and volume are small, and the equipment cost is reduced. Petrochemical industries such as dehydration and electrochemical refining of refined oil or denitrogenation refining of lubricating oil.

Description

technical field [0001] The invention relates to a high-voltage electrostatic separation device, in particular to a crude oil desalination and dehydration device in the petrochemical industry. Background technique [0002] In the refining process of crude oil in the petrochemical industry, since crude oil contains impurities such as water and salt, these impurities will not only affect the quality of finished products, but also cause corrosion to equipment, which will cause serious safety accidents in the long run. Therefore, before crude oil is refined Crude oil must be desalted and dehydrated. Since salt is soluble in water, desalting is actually dehydration. Using the principle of high-voltage electrostatic polymerization is a better way to desalt and dehydrate crude oil. Therefore, people use this principle Various electric desalination and dehydration equipment have been designed. At present, there are mainly two types of desalination and dehydration equipment, one is A...

AI Technical Summary

Problems solved by technology

At the same time, due to the existence of capacitance and conduction currents between the AC weak electric field, when the crude oil has high water content or serious emulsification, the voltage doubling electric field cannot be established, and similar to the attached figure 1 The vicious cycle of the AC desalination and dehydration equipment shown makes the dehydration effect worse

These two kinds of electric desalination and dehydration equipment have the problem of high power consumption, and the desalination and dehydration effect is seriously restricted by the water content and emulsification state of crude oil. Sometimes in order to increase the desalination and dehydration effect, the method of increasing the capacity of the transformer has to be used to improve desalination and dehydration. Dehydration effect, the transformer capacity used is generally more than twice the design capacity, which not only increases power consumption, but also increases equipment investment costs

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