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A membrane emulsifier and emulsion preparation method

A membrane emulsifier and membrane tube technology, applied in the field of membrane emulsification, can solve the problems of unstable dispersed phase pressure, affecting particle size uniformity, difficult industrial production, etc., and achieve a smooth preparation process, controllable particle size and simple operation. Effect

Active Publication Date: 2011-12-14
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under the existing technology, the membrane emulsifiers used are mostly small-scale equipment for experiments, with slow emulsification speed and less preparation volume
Moreover, since the pressure control of the experimental emulsifier such as pressurization and pressure relief are all manual operations
As the emulsification proceeds, the liquid level of the dispersed phase will decrease, which will cause pressure fluctuations. Therefore, when the gas cylinder is manually adjusted to apply pressure to the dispersed phase during the emulsification process, the pressure of the dispersed phase will be unstable, which will seriously affect the particle size uniformity. , poor batch repeatability
[0005] The main disadvantages of the prior art are that the emulsification speed is slow, the amount of preparation is small, the pressure is uncontrollable, and it is difficult to scale up for industrial production

Method used

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  • A membrane emulsifier and emulsion preparation method
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  • A membrane emulsifier and emulsion preparation method

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preparation example Construction

[0038] The invention provides a membrane emulsifier and an emulsion preparation method, which are used for preparing emulsions, microspheres or microcapsules in the fields of chemistry, chemical industry, light industry, food, medicine, biochemistry and the like.

[0039] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a specific embodiment of the membrane module in the membrane emulsifier provided by the present invention. The membrane module 11 includes a plurality of inorganic membrane tubes 101 horizontally arranged in parallel, and membrane holes for dispersed phase permeation are distributed on the membrane tubes 101, and the two ends of the membrane tubes 101 vertically pass through the first ba...

Embodiment 1

[0073] (1) styrene monomer (produced by Beijing Chemical Reagent Company, chemically pure) 1000g and divinylbenzene monomer (produced by Shandong Dongda Chemical Industry Company, chemically pure) 1000g mix, add 20g benzoyl peroxide (initiator BPO , produced by Beijing Chemical Reagent Company, analytically pure), the mixture was completely dissolved, and the resulting solution was the dispersed phase.

[0074] (2) 20L of deionized water, add 200g of polyvinyl alcohol (PVA, 80% degree of hydrolysis), 8.8g of sodium lauryl sulfate and 2.2g of anhydrous sodium sulfate, the mixture is completely dissolved, and the resulting solution is the continuous phase.

[0075] (3) Install 10 SPG microporous membrane tubes (with a pore size of 5 microns) on the attached figure 1 In the membrane module shown, and install the membrane module in the attached Figure 4 In the membrane emulsifier shown. Introduce a pressure of 8KPa into the membrane module through a nitrogen cylinder and an aut...

Embodiment 2

[0080] (1) After mixing 4L of deionized water and 40g of acetic acid, add 60g of chitosan, and mix the mixture completely to form a solution, which is the dispersed phase.

[0081] (2) Mix 14L liquid paraffin and 10L petroleum ether evenly, add 960ml of oil phase initiator PO-500, the mixture is completely dissolved into a solution, which is the continuous phase.

[0082] (3) 20 surface-modified SPG microporous membrane tubes (with a pore size of 1 micron) were installed in the attached figure 1 In the two sets of membrane modules shown, and install the membrane modules in the attached Figure 5 In the membrane emulsifier shown. Introduce a pressure of 10KPa into the membrane module through a nitrogen cylinder and an automatic pressure controller PIC, and observe the pressure for 10 minutes. If the pressure change trend is consistent with the predicted trend, it indicates that the sealing of the membrane module is good, and the next membrane emulsification experiment can be ...

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Abstract

The invention discloses a membrane emulsifier, which comprises a membrane module, a dispersed phase feeding tank, a constant pressure feeding device and a continuous phase feeding tank; the membrane module includes a plurality of parallel membrane tubes, and the two ends of the membrane tubes pass through The first baffle plate and the second baffle plate, the two baffle plates are sealed with the outer jacket fluid surrounding the film tube to form a dispersed phase cavity, the film tube and the two baffle plates are in a liquid-tight connection structure, and the dispersed phase The cavity includes a dispersed phase inlet at the bottom of the dispersed phase; the dispersed phase feeder includes a dispersed phase feeding pipe that sends the dispersed phase into the dispersed phase cavity through the dispersed phase inlet; the constant pressure feeding device is connected to the dispersed phase feeding pipe The pressure of the dispersed phase in the dispersed phase cavity is kept constant; the continuous phase feeder includes a continuous phase feed pipe for feeding the continuous phase to the membrane pipe and a continuous phase return pipe for returning the emulsion. The membrane module provided by the invention prepares the emulsion with high throughput, realizes the high-level batch repeatability of the emulsion through the constant pressure feeding device, and effectively improves the quality of the emulsion.

Description

technical field [0001] The invention relates to the field of membrane emulsification, in particular to a membrane emulsifier and an emulsion preparation method. Background technique [0002] Emulsification is an important unit operation in the fields of chemistry, chemical industry, light industry, food, medicine, biochemistry and so on. Traditional emulsification equipment mainly includes mechanical stirring type, jet type and ultrasonic type, etc. The environment of these traditional emulsification equipment for emulsion formation is poor, and it is impossible to prepare milk droplets or milk balls with uniform size, and the prepared products appear as milk balls of different sizes. The mixture, the particle size distribution coefficient is generally 50%, the particle size is uncontrollable, and the batch repeatability is poor. The problem with traditional emulsification equipment is that it not only affects product quality, but also requires cumbersome post-processing an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/08B01F13/00B01D63/06
Inventor 马光辉巩方玲苏志国
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI