A method and device for preparing monoglyceride based on hydrodynamic cavitation enhancement

A technology of hydrodynamic cavitation and monoglyceride, applied in chemical instruments and methods, transportation and packaging, chemical/physical/physicochemical processes, etc., can solve problems such as high viscosity and surface tension, decreased operational safety, and increased processing difficulty problem, to achieve the effect of avoiding high temperature oxidation, improving cavitation strength and reducing dosage

Active Publication Date: 2022-06-24
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the system of preparing monoglyceride by glycerol hydrolysis of oil, the viscosity and surface tension of each component in the system are relatively large, so a very small opening area and a very high pre-plate pressure are required to achieve a good strengthening effect, which increases the processing difficulty of the equipment , the operational safety decreases

Method used

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  • A method and device for preparing monoglyceride based on hydrodynamic cavitation enhancement
  • A method and device for preparing monoglyceride based on hydrodynamic cavitation enhancement
  • A method and device for preparing monoglyceride based on hydrodynamic cavitation enhancement

Examples

Experimental program
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Effect test

Embodiment

[0036] Example: Control Figure 1-3

[0037] A device for preparing monoglyceride based on hydrodynamic cavitation strengthening comprises a reaction kettle 1-5, a cavitation part, a raw material oil storage tank 2-1, a glycerol storage tank 2-2 and a quenching system. The tops of the raw oil storage tank 2-1 and the glycerin storage tank 2-2 are provided with vents and corresponding venting valves, and the bottoms of the raw oil storage tank 2-1 and the glycerin storage tank 2-2 are provided with outlets and corresponding discharges valve.

[0038] The outer side of the reaction kettle 1-5 is covered with an electric heating jacket 1-4, a thermometer 1-1 is inserted in the reaction kettle 1-5, and the temperature measurement point of the thermometer 1-1 is located in the inner part of the reaction kettle 1-5. The middle part of the interior; the thermometer 1-1 is connected to the temperature controller 1-2, the temperature controller 1-2 is connected to the electric heatin...

Embodiment 1

[0064] Monoglycerides were prepared by conventional mechanical stirring:

[0065] Soybean oil and glycerol were added to the reaction kettle, and the molar ratio of glycerol and soybean oil was 5:1, and the reaction was carried out under stirring, the stirring speed was 300r / min, and the reaction temperature was 250°C. During the reaction process, the content of monoglycerides generated by the reaction in the reaction mixture was monitored in real time, and the results were as follows Figure 4 shown.

Embodiment 2

[0067] Monoglycerides were prepared by conventional mechanical stirring:

[0068] Add soybean oil, glycerol and MgO powder catalyst (the mesh number of MgO powder is more than 200 meshes) in the reactor, the molar ratio of glycerol and soybean oil is 5:1, and the quality of MgO powder catalyst is the quality of soybean oil. 1.0wt%, the reaction is carried out under stirring, the stirring speed is 300r / min, and the reaction temperature is 250°C. During the reaction process, the content of monoglycerides generated by the reaction in the reaction mixture was monitored in real time, and the results were as follows Figure 4 shown.

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Abstract

The application discloses a method and device for preparing monoglyceride based on hydraulic cavitation enhancement. The device of the application includes a reactor, a cavitation pump and a cavitator, and the liquid outlet of the reactor passes through the cavitation pump and cavitation The liquid inlet of the reactor and the reactor is connected by a pipeline to form a circulation loop; the cavitator is a composite device including a Venturi tube, a rotating porous cavitation plate and a rotating blade, and the inner wall of the venturi throat is installed near the outlet to rotate The porous cavitation plate, the rotating porous cavitation plate is provided with a number of openings; the rotating blades are arranged on the side of the rotating porous cavitation plate facing the inlet of the throat of the Venturi tube, and the outer wall of the throat of the Venturi tube near the inlet end is evenly spaced There are several intake pipes. The cavitator of the present application can further improve cavitation, mixing and reaction effects through the introduction of inert gas, and reduce the activation energy of the reaction, thereby reducing the reaction temperature, reducing the amount of catalyst, and shortening the reaction time.

Description

technical field [0001] The invention relates to the technical field of intensified mixing and monoglyceride production, in particular to a method and a device for preparing monoglyceride based on hydraulic cavitation intensification. Background technique [0002] Fatty acid monoglyceride is a polyol type non-ionic surfactant, which is widely used in food, cosmetics, medicine, detergent, plastics and other industries. Especially in the field of food, fatty acid monoglyceride is a safe emulsifier approved and recognized by the United Nations Food and Agriculture Organization, the United Nations World Health Organization and the United States Food and Drug Administration, and its dosage has exceeded 50% of the total amount of food emulsifiers. [0003] The reaction of lipid glycerolysis to prepare monoglyceride is a liquid-liquid heterogeneous reaction, and the mixing and mass transfer between phases have a great influence on the synthesis of monoglyceride. At present, the syn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/00B01J19/14B01J19/24B01F33/80B01F25/30B01F25/312C09K23/00C09K23/34C11C3/06
CPCB01J19/0013B01J19/0053B01J19/14B01J19/2465C11C3/06B01J2219/00063B01J2219/00094B01J2219/00135B01F25/3121B01F33/80B01F33/8362C09K23/00
Inventor 陆向红王博通计建炳廖陈增
Owner ZHEJIANG UNIV OF TECH
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