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Method and device for predicting interaction among liquid drops adsorbing surfactant

A surfactant and droplet technology, which is applied in the field of research on the physical and chemical properties of emulsions, can solve problems such as the large number of emulsions produced and the effects of emulsion properties

Inactive Publication Date: 2019-08-06
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Crude oil directly extracted from the formation often contains a large amount of natural surfactants such as colloids and asphaltene, which leads to a large amount of emulsion and has a significant impact on the properties of the emulsion.

Method used

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  • Method and device for predicting interaction among liquid drops adsorbing surfactant
  • Method and device for predicting interaction among liquid drops adsorbing surfactant
  • Method and device for predicting interaction among liquid drops adsorbing surfactant

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Embodiment Construction

[0078] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0079] refer to figure 1 As shown, the method for predicting the force between droplets adsorbed with surfactants in the embodiment of the present application may include the following steps:

[0080] S101: During the process of the two second-phase medium droplets moving toward each other to have a direct elastic ...

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Abstract

The invention discloses a method and device for predicting interaction among liquid drops absorbing a surfactant. The method comprises that when two second-phase dielectric liquid drops make face-to-face elastic collision when moving towards to each other and separate from each other after collision, the radii and collision speed of the two second-phase dielectric liquid drops are determined; a separation pressure in the face-to-face elastic collision process is determined according to the radii and collision speed of the two second-phase dielectric liquid drops; according to a convection-diffusion equation, an drainage equation, a generalized Young-Laplace equation and the separation pressure, a dynamic water application force in the face-to-face elastic collision process and the interface concentration and migration speed of the surfactant in the surfaces of the liquid drops are determined; and according to the dynamic water application force and separation pressure, a total action force between the two second-phase dielectric liquid drops is determined. Thus, the action force between two liquid drops and distribution and migration of the surfactant in the two-phase interface ina disperse medium with the surfactant can be predicted accurately.

Description

technical field [0001] The present application relates to the field of research on the physical and chemical properties of emulsions, in particular to a method and device for predicting the interaction between droplets adsorbed with surfactants. Background technique [0002] Oil-water emulsions containing surfactants exist in various fields of industrial production, such as petrochemical, cosmetic, pharmaceutical and food industries. In the world, the vast majority of crude oil exploited exists in the form of oil-water emulsions. In the oil industry production, exploitation, development, gathering and storage, etc., the treatment and processing of oil-water emulsions containing surface active substances are involved. . An oil-water emulsion is a complex multicomponent mixture in which one liquid is dispersed into droplets by another liquid. This way of existence makes both the macroscopic flow characteristics and microscopic properties of the system different from those of...

Claims

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Application Information

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IPC IPC(8): G01N13/02
CPCG01N13/02G01N2013/0275
Inventor 王玮靳航葛运通
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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