Deep electric desalting technology for heavy inferior crude oil

Abstract

The invention relates to a heavy poor crude oil deep electric desalting device which comprises an electric desalting tank body, an electronic pressure regulator, an electric desalting special transformer, a flat-response electrode plate, a vertical-response electrode plate and an oil dispenser. The electronic pressure regulator can preset, modify or dynamically regulate the wave curve input to the transformer by programming. AC response high tension electricity is transported on the flat-response electrode plate, negative-positive response high tension electricity is transported on the vertical-response electrode plate, the flat-response electrode plate and an oil-water boundary form an AC response high voltage electric field, the high tension electricity transported on the flat-response electrode plate can be automatically adjusted according to the emulsification degree of an oil-water emulsification layer, and the oil dispenser is arranged between the flat-response electrode plate and the oil-water boundary. The invention forms the flat response high voltage electric field and the vertical response high voltage electric field, has stronger emulsion breaking property, thoroughly solves the problem of the tripping operation of the transformer during the procedure of processing heavy poor crude oil, ensures that a unit operates stably for a long period, greatly reduces the water content of the desalted crude oil so as to achieve the technical target that the water content of the desalted crude oil is not less than 0.2 percent, achieves the technical target that the salt content is lowered to be less than 2mg / l and realizes the technical target of deeply desalting.

Description

Technical field [0001] The present invention relates to an oil product desalination technology equipment, more specifically it relates to an electric desalination process equipment which utilizes a high-voltage electrostatic field to separate oil from water and remove water and salt from oil products. It is mainly suitable for high specific gravity, High viscosity, high acid value, high salt content, high water content, deep desalting technology for heavy and inferior crude oil that is easy to emulsify. Background technique [0002] With the rapid development of the world economy, the demand for crude oil is also increasing. Crude oil extracted from the ground is an extremely complex mixture of hydrocarbons that must undergo a series of processing before it can be turned into a product with multiple uses. Different oil fields, different oil regions, and even different oil wells around the world produce crude oil with different properties, water content and salt content, whi...

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Problems solved by technology

[0018] The purpose of the present invention is to provide a high-voltage electric desalting electric field technology with high-efficiency demulsification ability for the stubborn oil-water emulsion layer formed at the oil-water boundary in the electric desalting tank during the processing of inferior crude oil, so as to adapt to the current situation of processing inferior crude oil in refineries Need to solve the problems of large operating current and high energy consumption of electric desalting equipment in the process of processing inferior crude oil, which are prone to plate breakdown, short circuit and tripping of electric desalting equipment, so as to ensure the smooth operation of electric desalting equipment

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