Adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and control method thereof

Abstract

The invention discloses an adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and a control method thereof. The power supply is characterized in that the voltage waveform output by a power supply is double-frequency and double-voltage alternating current, i.e. an output signal determined by two limit voltage values, two frequency values and the waveform of one optimized fundamental wave is boosted by a high-voltage transformer circuit and is output by double-frequency high-voltage alternating current, then, the voltage of secondary winding coil side is rectified similarly to AC / DC double electric fields by a diode rectifier, and the voltage is added on the battery lead plate of a dehydrator to form strong impact force on an emulsion film. The double-frequency high-pressure pulse-mode crude oil dehydration power supply of the invention can self-adaptively determine an optimized power supply output signal aiming at the physical property parameter of raw oil processed currently; two suitable limit voltage values, two frequency values and one optimized base wave waveform are respectively chosen to determine double-frequency / double-voltage power supply output signal; and the emulsion film can be furthest impacted so as to accelerate liquid drop coalescence.

Description

technical field [0001] The invention relates to a dual-frequency high-voltage pulse type crude oil dehydration power supply and its method based on waveform adjustable optimization, in particular to a device and its design for demulsification and dehydration of water-in-oil emulsions relying on the action of electric field force Method, the device utilizes dual-frequency / dual-voltage AC power supply for dehydration, which can increase the impact force on the emulsified film. Background technique [0002] The demulsification methods of crude oil oil-water emulsion mainly include electric demulsification, biological demulsification, microcapsule demulsification, sonochemical demulsification, microwave radiation demulsification and ultrasonic demulsification. Among them, the essence of electric dehydration of crude oil is to apply the force of electric field to water droplets, weaken the strength of the interface film of water droplets, promote the collision of water droplets, ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method that can not only make the electric field change from a series of frequencies to F1, but also aim at the disadvantages of low availability of the electric field of the common dehydration power supply in the prior art, unstable operation caused by easy short circuit, and insufficient impact force on the emulsified film. At the same time, the basic signal changes with the inverter frequency F2, accelerating the impact on the emulsified film, and its control circuit can control the shape and inclination of the power output fundamental wave waveform of the dual-frequency / dual-voltage crude oil Dehydration power supply

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