Deep electric desalting technology for heavy inferior crude oil

A low-quality crude oil, electric desalination technology, applied in the direction of electric/magnetic dehydration/emulsification, etc., can solve the problems of high energy consumption, short-circuit electric desalination equipment, plate breakdown, etc., and achieve the effect of strong demulsification ability

CN101497813BActive Publication Date: 2013-01-30长江三星能源科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-01-30

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Abstract

The invention relates to a heavy poor crude oil deep electric desalting technology 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.
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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...

Examples

Embodiment Construction

[0026] See attached figure 1 The deep electric desalting technology of heavy and inferior crude oil is a deep electric desalting technology specially designed for the demulsification of stubborn emulsification that is easily formed at the oil-water interface during the processing of heavy and inferior crude oil. During the normal operation of the electric desalination equipment, the upper inner part of the electric desalination tank 3 is the oil phase 4, and the high-voltage electric field will be completely designed in the oil phase 4; the lower part of the electric desalination tank 3 is the water phase 10. Between the oil phase 4 and the water phase 10 is the oil-water interface 9 . During the process of processing heavy and inferior crude oil, a lot of oil-water emulsion will accumulate at the oil-water interface 9 and form an emulsified layer. The emulsified layer contains a large amount of water and has a relatively high conductivity. When the emulsified layer thickens, ...