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Vacuum spray freeze-drying device and method

A technology of vacuum spraying and drying equipment, applied in drying solid materials, lighting and heating equipment, drying solid materials without heating, etc., can solve the problems of affecting the quality of freeze-dried products, low standing drying efficiency, low slow freezing efficiency, etc. , to achieve the effect of improving heat and mass transfer, shortening freeze-drying cycle, and improving sterility

Inactive Publication Date: 2016-02-10
SHANGHAI TOFFLON SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new method described for making frostings without harmful chemicals or other substances has several benefits compared to previous methods like conventional cool air systems. It also allows for faster freezers while reducing their own costs associated with maintenance. Additionally, it provides better control over how much water vaporizes when compressed at high pressures than before, resulting in more efficient evaporation rates. Overall, this innovation makes producing consistently good quality products easier and less expensive due to its unique technical feature.

Problems solved by technology

This technical solution described in this patents relates to improving the efficiency of freeze dehydrations that involve cooling down materials like suspended solvents without causing them to solidify over when they fall onto horizontal plates due to gravity forces. However, traditional methods require large amounts of space and may result in waste and impurities being introduced into the final product.

Method used

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  • Vacuum spray freeze-drying device and method
  • Vacuum spray freeze-drying device and method
  • Vacuum spray freeze-drying device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 2 As shown, it is a schematic structural diagram of the vacuum spray freeze-drying equipment in Example 1. The vacuum spray freeze-drying equipment includes: a closed container 1 for holding materials in the vacuum spray freeze-drying process; The liquid is atomized and dispersed into droplets and sprayed into the atomizing nozzle 2 in the container 1; it is used to form a vacuum environment in the container 1 during the vacuum spray freezing granulation stage to vaporize the water in the droplets and absorb heat Then the droplets are cooled and frozen to form granules, and the vacuum system is continuously evacuated to maintain the vacuum environment in the drying stage; The drying stage provides the temperature-regulating jacket 6 for the sublimation heat of the ice in the particles, and in the vacuum spray freeze granulation stage, the evaporated water vapor is condensed and the water in the particles after sublimation is condensed in the drying stage...

Embodiment 2

[0050] Such as image 3 As shown, it is a schematic diagram of the structure of the vacuum spray freeze-drying equipment in Example 2. The vacuum spray freeze-drying equipment is similar to Example 1, the difference is that the condensing device is located outside the container 1 and is connected with the The condenser 30 connected to the container 1, the condenser 30 is connected to the connection port of the container 1 through the pipeline 11, the vacuum pump 10 is connected to the condenser 30 through another pipeline, and the condenser 30 A valve 12 is provided on the pipeline 11 between the connection port of the container 1 , and no refrigeration jacket 3 is provided outside the upper part of the container 1 .

[0051] Take the ivy powder aqueous solution that 125g ivy powder is dissolved in the gained ivy powder in 2L water as example, when described equipment is used, implementation step is similar to embodiment 1, and difference is:

[0052] Step 1: In the stage of ...

Embodiment 3

[0055] Such as Figure 4 As shown, it is a schematic diagram of the structure of the vacuum spray freeze-drying equipment in Example 3. The vacuum spray freeze-drying equipment is similar to that of Example 1, the difference is that the condensing device is the one in the refrigeration jacket 3 and the condenser 30. In combination, the refrigeration jacket 3 is arranged outside the upper part of the container 1, the condenser 30 is arranged outside the container 1, and the condenser 30 is connected to the container 1 through a pipeline 11. The connection port of the vacuum pump 10 is connected to the condenser 30 through another pipeline, and a valve 12 is provided on the pipeline 11 between the condenser 30 and the connection port of the container 1 .

[0056] Take the ivy powder aqueous solution that 125g ivy powder is dissolved in the gained ivy powder in 2L water as example, when described equipment is used, implementation step is similar to embodiment 1, and difference is...

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Abstract

The invention provides a vacuum spray freeze-drying device and method. The vacuum spray freeze-drying device is characterized in that the device comprises a closed container used for containing materials in the vacuum spray freeze-drying process, atomizing nozzles, a vacuum system and a temperature regulating jacket; the atomizing nozzles are used for atomizing and dispersing liquid to be freeze-dried into liquid drops and spraying the liquid drops into the container; the vacuum system is used for forming a vacuum environment in the container in the vacuum spray-freezing pelletizing stage to enable part of components in the liquid drops to be vaporized so as to absorb heat, and then the liquid drops are cooled and frozen to form particles, and the vacuum system is also used for carrying out continuous vacuumizing in the drying stage so as to maintain the vacuum environment; the temperature regulating jacket is used for carrying out refrigeration in the vacuum spray-freezing pelletizing stage to prevent part of components in the particles from being molten, and the temperature regulating jacket is also used for providing sublimation heat for part of the components in the particles in the drying stage. In the fast freezing process of the materials, and no refrigerants are adopted to contact with the materials, so that the risk of material pollution is completely eliminated, and sterility of the freeze-drying process is guaranteed.

Description

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Claims

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Application Information

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Owner SHANGHAI TOFFLON SCI & TECH CO LTD
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