Dispersive droplet emulsion and preparation method thereof

A technology for dispersing liquid droplets and emulsions, applied in the field of chemical engineering, can solve the problems of wide distribution of dispersed liquid droplet diameters and poor controllability of dispersed liquid droplet diameters, and achieve the effect of avoiding large equipment volume, economical and practical operation, and simple operation

Active Publication Date: 2014-02-26
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to provide a dispersed droplet emulsion and a preparation method thereof, so as to solve the poor controllability of the diameter of the dispersed droplet and the wide distribution of the diameter of the dispersed droplet in the preparation process of the dispersed droplet emulsion existing in the prior art technical issues

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  • Dispersive droplet emulsion and preparation method thereof
  • Dispersive droplet emulsion and preparation method thereof
  • Dispersive droplet emulsion and preparation method thereof

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[0021] According to a typical embodiment of the present invention, a method for preparing a dispersed droplet emulsion is provided, comprising the following steps: mixing a hydrophobic organic solvent and a hydrophilic organic solvent according to a mass ratio of 1:20 to 1:2000 to obtain a dispersing solvent; and mixing the dispersing solvent and the aqueous solution of the inorganic salt to form a dispersed uniform droplet emulsion; wherein the dispersing solvent and the aqueous solution of the inorganic salt are mixed in a static mixer.

[0022] In the present invention, a hydrophilic organic solvent is mixed with a hydrophobic organic solvent to obtain a dispersive solvent, and the dispersive solvent is sent to a static mixer to mix with an aqueous solution of inorganic salt, so that the dispersed solvent with controllable particle size and wide diameter distribution can be rapidly prepared. Uniform droplet emulsion. The preparation method of the present invention is simple...

Embodiment 1

[0036] Mix hexadecane and methanol according to the mass percentage of 1:2000 to obtain a dispersing solvent, wherein the ratio of the moles of hexadecane to the volume of methanol is 1.0×10 -4 mol / L. The dispersing solvent was ultrasonically degassed for 5 minutes to form a homogeneous dispersing solvent. The homogeneous dispersibility solvent is placed in the first syringe pump 11, and the sodium chloride aqueous solution is placed in the second syringe pump 12. Driven by the first syringe pump 11 and the second syringe pump 12, the homogeneous dispersibility The solvent and the aqueous sodium chloride solution are mixed in the SV type static mixer 2 to form a dispersed droplet emulsion, and the emulsion of the dispersed liquid continues to flow forward into the collecting vessel 3, and the pH value of the dispersed droplet emulsion is adjusted to 3.0 with hydrochloric acid.

[0037] According to the above method, the prepared dispersing solvent is divided into 10 parts, an...

Embodiment 2～5

[0043] Mix n-dodecane and acetone according to the ratio in Table 2 to obtain a dispersing solvent. The dispersing solvent was ultrasonically degassed for 5 minutes to form a homogeneous dispersing solvent. Put the homogeneous dispersion solution into the first syringe pump 11, put the 0.001mol / L sodium chloride solution into the second syringe pump 12, under the drive of the first syringe pump 11 and the second syringe pump 12, Mix the homogeneous dispersing solvent and potassium chloride aqueous solution in a static mixer to form a dispersed droplet emulsion, and the dispersed droplet emulsion continues to flow forward in the collection vessel 3, and adjust the pH value of the dispersed droplet emulsion with sodium hydroxide to 6.0. The diameter of the droplet was measured by the dynamic light scattering method and the particle size distribution of the droplet was counted. The samples were measured three times, and the average value was taken. The specific data are shown i...

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Abstract

The invention discloses a dispersive droplet emulsion and a preparation method thereof. The preparation method comprises steps of mixing a hydrophobic organic solvent with a hydrophilic organic solvent according to a weight ratio of 1:20-1:2000 to obtain a dispersive solvent; and mixing the dispersive solvent with an aqueous inorganic salt solution to form the dispersed droplet emulsion, wherein the dispersive solvent and the aqueous inorganic salt solution are mixed in a static mixer. By feeding the dispersive solvent obtained by mixing the hydrophobic organic solvent with the hydrophilic organic solvent into the static mixer to be mixed with the aqueous solution, the dispersive homogeneous droplet emulsion with a controllable particle size and a wide diameter distribution is prepared rapidly. The method is simple in operation, and is economic and practical. The method avoids problems of oversized particle size ranges, large equipment sizes, high cost and difficult operation in traditional preparation processes of dispersive droplet emulsions.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a dispersed droplet emulsion and a preparation method thereof. Background technique [0002] Traditional liquid / liquid dispersion methods mainly include stirring method, stator-rotor method, ultrasonic method and high-pressure homogenization method, etc. Among them, the agitator is the most commonly used liquid / liquid dispersion equipment, and the dispersed phase is broken by the shear force of turbulent flow. However, the turbulent flow Also cause high energy consumption. For stator-rotor systems, such as notched disc high-speed homogenizers and colloid mills, high shear forces are generated through roughness or shrinkage between the stator and rotor, which is the main cause of fluid dispersion and droplet formation. For the high-pressure emulsification mixing system, the fluid passes through a narrow opening, and the local turbulence causes the droplet to break up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/08B01F5/00
Inventor 吴勇
Owner CHNA ENERGY INVESTMENT CORP LTD
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