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Device for demulsifying emulsified oil product and method thereof

A technology for demulsification and oil products, which is applied in the fields of hydrocarbon oil dehydration/demulsification, petroleum industry, etc. It can solve the problems of complex method equipment, high energy consumption for repeated heating, and low demulsification efficiency, so as to improve the demulsification efficiency and shorten the Demulsification time, the effect of solving secondary pollution

Active Publication Date: 2021-07-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of low demulsification efficiency, complex method and equipment, and high energy consumption of repeated heating in oil product demulsification in the prior art, the present invention provides a device and method for demulsification of emulsified oil products, which can improve demulsification efficiency and simplify The demulsification process reduces the energy consumption of the demulsification process, shortens the demulsification time, and realizes the demulsification of emulsified oil products, which is of great significance for the subsequent transportation and deep processing of emulsified oil products

Method used

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  • Device for demulsifying emulsified oil product and method thereof
  • Device for demulsifying emulsified oil product and method thereof
  • Device for demulsifying emulsified oil product and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A device for demulsifying emulsified oil products, including a dissolved air system, a primary demulsification system and a secondary demulsification system, such as figure 1 Shown:

[0057] The gas dissolving system includes a material mixing tank 11 and a microbubble generator 12 connected thereto; the material mixing tank 11 is provided with an emulsified oil raw material inlet and a gas inlet for mixing the two.

[0058] The discharge pipeline I13 of the microbubble generator 12 is connected to the primary demulsification system through the feed port I21, including four parallel primary demulsifiers 22 connected to the end of the discharge pipeline I13, and the primary demulsifier The upper part of the demulsifier 22 is provided with a first-stage demulsifier gas outlet 26, and the first-stage demulsifier 22 is successively divided into a diameter-reducing section 221, a straight cylinder section 222, and a diameter-expanding section 223 from the feed end, and the i...

Embodiment 2

[0063] Demulsification of the emulsified oil product using the device of Example 1: Table 1 shows the properties of the raw material of the emulsified oil product, and the emulsified oil product is severely emulsified.

[0064] Table 1.

[0065]

[0066] Add the above-mentioned emulsified oil raw material and gas into the material mixing tank 11 through the emulsified oil raw material inlet and the gas inlet connected to the material mixing tank 11, mix the two, and transport them to the microbubble generator 12 for mixing and dissolving. Dissolve and disperse the gas into the emulsified oil to obtain the gas-in-oil mixed material, enter the primary demulsifier 22 through the discharge pipeline I13 from the feed inlet I21, and pass through the shrinking section 221, the straight section 222 and the expanding section in sequence Section 223, in the diameter-reducing section 221 and the diameter-expanding section 223, the mesh corrugated plate filler is filled. In the diamete...

Embodiment 3

[0070] Demulsification of the emulsified oil product using the device of Example 1: Table 2 shows the properties of the raw material of the emulsified oil product, and the emulsified oil product is severely emulsified.

[0071] Table 2.

[0072]

[0073] The gas flow rate added to the emulsified oil raw material in the material mixing tank (Nm 3 / h) and emulsified oil raw material (m 3 / h) The volume ratio is 1:120, and the gas volume in it is based on the gas volume in the standard state. The operating conditions of the dissolved gas system are as follows: the temperature is 90°C and the pressure is 3.0MPa. In the discharge pipeline I13, high-pressure nitrogen is added to the material through the pressurization tank 25 pressurization equipment. The operating temperature of the pressurization tank 25 is 90°C and the pressure is 5.0MPa. The operating temperature is 90°C and the pressure is 3.0MPa, and the operating temperature of the straight section 222 and the enlarged ...

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Abstract

The invention discloses a device and a method for demulsifying an emulsified oil product. The device comprises a gas dissolving system, a primary demulsifying system and a secondary demulsifying system, gas is dissolved and dispersed into an emulsified oil product raw material in the gas dissolving system to form a gas-in-oil type fluid, and then the gas-in-oil type fluid is subjected to a diameter shrinkage-straight tube-diameter expansion structure of a first-stage demulsifier of the first-stage demulsification system, so that dissolved gas in the gas-in-oil type fluid destroys a stable emulsified structure of the emulsified oil product in the gas expansion and bubble coalescence growth process, the emulsion drops are dispersed into tiny liquid drops, and finally the tiny liquid drops sequentially pass through a membrane tube bundle in a first cavity, an oleophylic and hydrophobic fiber braid layer, a hydrophilic and oleophobic fiber braid layer and a membrane tube bundle in a second cavity in the second-stage demulsification system, so that water-in-oil type and oil-in-water type emulsion drops are thoroughly destroyed, and demulsification is realized. According to the device and the method disclosed by the invention, a physical method is adopted, so that the pollution of a chemical demulsifier is avoided, the problems of low demulsification efficiency, poor adaptability and high demulsification difficulty are solved, the demulsification efficiency is improved, and the demulsification time is shortened.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, in particular to a device for demulsification of emulsified oil products and a method for demulsification by using the same. Background technique [0002] The existing emulsified oil demulsification methods mainly include heating method, electrochemical method, chemical method, microbial method, physical method or combination of several methods. The chemical method, that is, adding chemical agents, is the most commonly used method for demulsification of existing heavy oil. , but the method of adding chemical agents has the problem that it cannot be universally applied to various types of heavy oil demulsification and the demulsification is not complete; the electrochemical method uses the electric field force to attract or repel the emulsion droplets, so that the tiny droplets are in motion Collision with each other, the small droplets are coalesced into larger droplets and separat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/00
CPCC10G33/00
Inventor 杨秀娜阮宗琳金平
Owner CHINA PETROLEUM & CHEM CORP
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