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A method and device for deep dehydration of oil products with electric field coupling medium coalescence

A deep dehydration, electric field coupling technology, applied in the direction of electricity/magnetic dehydration/demulsification, etc., can solve the problems of weak emulsification treatment effect, difficult to deal with complex oil products in refineries, high cost and long-term stable operation conditions, etc. The effect of high separation efficiency, good oil adaptability and high extraction depth

Active Publication Date: 2022-08-05
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the traditional gravity sedimentation separation method can only remove free water droplets, and has a weak effect on the emulsified state that exists in the form of water in oil; the hydrocyclone method cannot avoid the secondary emulsification generated during the cyclone process, and is not applicable. For the separation of emulsified water; fine separation technologies such as membrane separation and adsorption, due to high cost and lack of long-term stable operation conditions, it is difficult to deal with complex oil products in refineries and other occasions

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  • A method and device for deep dehydration of oil products with electric field coupling medium coalescence

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Embodiment 1

[0026] This embodiment provides a device for a method for deep dehydration of oil products with electric field coupling medium coalescence, see figure 1 , the device includes a power unit 1 , a first separation cavity 2 and a second separation cavity 12 . The first separation chamber 2 is provided with a medium separation unit 3 and a primary oil-water separation assembly 4 from top to bottom, and the second separation chamber 12 is provided with an electrical-dielectric coupling separation unit 7 and a secondary oil-water separation unit from top to bottom Component 10. The lower part of the first cavity is provided with a first outlet 13 , the upper part of the second cavity is provided with a second inlet 14 , and the first outlet 13 and the second inlet 14 communicate with each other. A first water phase outlet 15 is opened on the first cavity below the first outlet 13 , a purified oil outlet 16 is opened at the lower part of the second cavity, and a second water phase is...

Embodiment 2

[0032] After the diesel hydrogenation unit of a petrochemical plant is changed to a solvent oil hydrogenation unit, the oil products are subjected to reactive desulfurization and denitrification, and then heated into a hydrogen sulfide stripper to remove hydrogen sulfide components. Seriously, resulting in turbid appearance of oil products, affecting the delivery of aviation kerosene. The oil product deep dehydration device of the invention is used to dehydrate the oil product after the dehydration sedimentation tank, the appearance of the oil product is clarified, the water content of the oil product is obviously reduced, and the factory requirements of aviation kerosene are met.

[0033] Go through the following steps:

[0034] (1) The concentration of emulsified water in the bottom oil of the stripper is 580 mg / L. In the medium separation unit 3, the water droplets with larger particle size are captured, coalesced and grown by the packing medium, and separated from oil and ...

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Abstract

The invention provides a method and device for deep dehydration of oil products with electric field coupling medium coalescence. The oil product containing emulsified water flows into the medium separation unit, and the water droplets with larger particle size in the emulsion are coalesced and separated, thereby completing the preliminary demulsification of the emulsion; then it flows through the first-level oil-water separation component, and is separated by the principle of gravity sedimentation The water droplets that are coalesced and grown by the packing medium, the separated oil and water phases flow out of the medium separation unit respectively; the oil phase after preliminary separation flows into the electric-dielectric coupling separation unit for deep separation of the oil and water phases, and the water phase is subjected to electric field force. The dual effects of forced migration and coalescence of the packing medium make the water droplets with small particle size and difficult to separate in the oil phase be captured and coalesced; and then flow through the secondary oil-water separation component to separate the water and oil phases again. Achieve deep dehydration of oil products. The invention is suitable for the deep dehydration of highly emulsified water-containing oil products in the fields of petrochemical industry, coal chemical industry and the like, and has great positive significance and economic value for the deep dehydration of oil products.

Description

technical field [0001] The invention belongs to the field of petrochemical oil dehydration, in particular to a method and device for deep dehydration of oil products with electric field coupling medium coalescence. Background technique [0002] At present, most oilfields in my country have entered the medium-high water cut period, and the crude oil produced is accompanied by a large amount of produced water. In the process of crude oil refining, many process links require oil phase dehydration. If the water content is too high, it will have a certain impact on the process production. In severe cases, it will cause a certain loss of the device and there is a danger of explosion, and the output process products will not meet the standards. Among them, jet fuel has extremely strict water content requirements. If the dehydration effect is not ideal, jet fuel is rich in a large amount of water, which will accelerate the oxidation rate of fuel, produce viscous compounds, and chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/02
CPCC10G33/02
Inventor 杨强武世汉卢浩潘志程王志强刘懿谦孟敏代品一
Owner EAST CHINA UNIV OF SCI & TECH