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Method and device for preparing monoglyceride based on hydrodynamic cavitation intensification,

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

Active Publication Date: 2020-11-27
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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  • Method and device for preparing monoglyceride based on hydrodynamic cavitation intensification,
  • Method and device for preparing monoglyceride based on hydrodynamic cavitation intensification,
  • Method and device for preparing monoglyceride based on hydrodynamic cavitation intensification,

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 enhancement, comprising a reactor 1-5, a cavitation part, a raw oil storage tank 2-1, a glycerin storage tank 2-2 and a quenching system. The tops of the raw material oil storage tank 2-1 and the glycerin storage tank 2-2 are provided with vent ports and corresponding vent valves, and the bottoms of the raw material oil storage tank 2-1 and the glycerin storage tank 2-2 are provided with outlets and corresponding discharge valves. valve.

[0038] The outside of the reaction kettle 1-5 is covered with an electric heating jacket 1-4, and a thermometer 1-1 is inserted in the reaction kettle 1-5, and the temperature measuring point of the thermometer 1-1 is located at the bottom 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 h...

Embodiment 1

[0064] Monoglycerides are prepared by conventional mechanical stirring:

[0065] Add soybean oil and glycerin into the reaction kettle, the molar ratio of glycerol to soybean oil is 5:1, and react under stirring, the stirring speed is 300r / min, and the reaction temperature is 250°C. In the reaction process, the monoglyceride content generated by the reaction in the reaction mixture is monitored in real time, and the results are as follows: Figure 4 shown.

Embodiment 2

[0067] Monoglycerides are prepared by conventional mechanical stirring:

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

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Abstract

The invention discloses a method and device for preparing monoglyceride based on hydrodynamic cavitation intensification. The device comprises a reaction kettle, a cavitation pump and a cavitator; a liquid outlet of the reaction kettle is connected with a liquid inlet of the reaction kettle by a pipeline through the cavitation pump and the cavitator in sequence to form a circulation loop; the cavitator is a composite device comprising a venturi tube, a rotary porous cavitation plate and a rotary blade; the rotary porous cavitation plate is installed at the position, close to the outlet, of theinner wall of the throat of the venturi tube, and a plurality of open holes are formed in the rotary porous cavitation plate; the rotary blade is arranged on the side, facing an inlet of the venturitube throat, of the rotary porous cavitation plate; and a plurality of air inlet pipes are evenly arranged on the outer wall, close to the inlet end, of the venturi tube throat at intervals. Accordingto the cavitator disclosed by the invention, the cavitation, mixing and reaction effects can be further improved by introducing inert gas, and the activation energy of the reaction is reduced, so that the reaction temperature is reduced, the catalyst consumption is reduced, and the reaction time is shortened.

Description

technical field [0001] The invention relates to the technical field of enhanced mixing and monoglyceride production, in particular to a method and device for preparing monoglyceride based on hydraulic cavitation enhancement. 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 monoglycerides are safe emulsifiers approved and approved by the Food and Agriculture Organization of the United Nations, the World Health Organization of the United Nations, and the U.S. Food and Drug Administration, and their usage has exceeded 50% of the total amount of food emulsifiers. [0003] The reaction of glycerol hydrolysis 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 synth...

Claims

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Application Information

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IPC IPC(8): B01J19/00B01J19/14B01J19/24B01F13/10B01F5/04B01F17/34C11C3/06C09K23/34
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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