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Electric desalting method and equipment

An electric desalination and equipment technology, which is applied in petrochemical and resource utilization fields, can solve problems such as the back-mixing effect, achieve the effects of shortening equipment length, improving dehydration and desalination efficiency, and reducing equipment investment

Inactive Publication Date: 2016-08-24
刘英聚
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Problems solved by technology

There are two types of tank-type electric desalting from the crude oil flow direction. One is that the crude oil enters from the bottom of the electric desalting tank and is drawn out from the top. This type of crude oil flows from bottom to top, and water droplets move from top to bottom in the oil system (sedimentation flow) , the deficiency is that there is a backmixing effect

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Embodiment Construction

[0014] See figure 1 , figure 2 , The top of the housing 15 is provided with a boundary gauge 5, power supply equipment 3 and wires 2, a crude oil inlet 16 is provided at the bottom of one end of the housing 15, and a crude oil outlet 9 is provided at the top of the other end. A porous baffle type oil inlet distributor 1 and a porous baffle type oil outlet collector 8 are arranged at both ends of the housing 15, and three sections of two-layer cage electrodes 4, 6, 7 are arranged inside the housing 15; There are 3 sections of water-cutting and guiding devices installed along the axial direction inside, each section includes 5 layers of water-cutting and guiding plates 10, water receiving tanks 11, and drainage pipes 14, and 2 long strips of folded-plate-type water-cutting and guiding plates 10 are arranged in the axial direction of the equipment A water receiving tank 11 is set along the lower edge of the intercepting water guide plate 10, and the water receiving tank 11 is c...

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Abstract

The invention discloses an electric desalting method and belongs to the technical fields of petrochemical engineering and resource utilization. The electric desalting method is used for solving the problems that the existing electric desalting equipment is large in size and low in desalting and dewatering efficiency. An electric desalting tank is radially separated into a plurality of layers; a water interception and guide device is arranged at the bottom of each layer; water settled on each layer is intercepted and guided to a water bag, and the settled water drops on the upper layer are prevented from entering the lower layer. The invention also provides a water interception and guide plate, a water collection tank and drainage pipe equipment for realizing the method disclosed by the invention. According to the method and equipment, the desalting and dewatering efficiency is greatly improved. The method and equipment are used for crude oil desalting and dewatering, particularly applied to desalting and dewatering heavy crude oil.

Description

technical field [0001] The invention belongs to the technical fields of petrochemical industry and resource utilization, and in particular relates to an electric desalination method and equipment. Background technique [0002] Crude oil carries a large amount of water-soluble salt after extraction, and these salts have many adverse effects on crude oil processing equipment, such as equipment pipeline corrosion, salt formation, scaling, sludge, blockage, etc., so the first process of the refinery is "desalination" . At present, oil refineries generally use tank-type electric desalting, heating crude oil to 100-140 ° C, injecting washing water, mixing, washing and extracting to dissolve water-soluble salt in water; setting electrode plates in the electric desalting tank to generate an electric field, and the water-containing crude oil from the electric field Dipole coalescence, oscillation coalescence or electrophoretic coalescence occurs in regional flow, which makes small w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G32/02
Inventor 刘英聚
Owner 刘英聚
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