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A spray freeze sublimation dryer

A spray freezing, sublimation drying technology, applied in sublimation, spray evaporation, chemical instruments and methods, etc., can solve problems that have not yet been discovered, and achieve the effects of protection stability, convenient operation and simple structure

Active Publication Date: 2017-11-14
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The applicant retrieved relevant information and found that the existing spray drying is hot air drying, and at most, the easy-to-oxidize active components in the material are prevented by using an inert heat transfer medium instead of hot air; a method that combines centrifugal spray with liquid inert Vacuum freeze-sublimation drying combined with vacuum freeze-sublimation drying for medium vaporization and heat absorption to freeze mist materials

Method used

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  • A spray freeze sublimation dryer
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Embodiment 1

[0021] This embodiment provides a centrifugal spray freeze-sublimation dryer, the schematic diagram of which is shown in figure 1 shown.

[0022] exist figure 1 Among them, 1 is the feeding device; 2 is the centrifugal spray device; 3 is the liquid inert heat transfer medium injector; 4 is the inert heat transfer medium liquefaction tower; 5 is the condenser; 6 is the pipeline pump; 7 is the gaseous inert heat transfer Medium absorption device; 8 is a liquid inert heat transfer medium recovery device; 9 is a grid partition; 10 is an electric control device; 11 is a heating device; 12 is a discharge port; 13 is a valve; 14 is an electric wire; 15 is vacuuming device; 16 is a gas-liquid separator; 17 is a condenser; 18 is a liquid inert heat transfer medium pipeline; 19 is an inert heat transfer medium pipeline. 20 is a drying tower, 21 is a spray freezing bin, 22 is a buffer bin, and 23 is a vacuum drying bin.

[0023] A centrifugal spray freeze-sublimation dryer, comprising...

Embodiment 2

[0034] This embodiment provides the second spray freeze sublimation dryer, its structural schematic diagram is as follows figure 2 shown.

[0035] exist figure 2 Among them, 1 is a feeding device; 2 is a spray device; 3 is a liquid inert heat transfer medium injector; 24 is a liquid nitrogen bottle, 25 is a nitrogen outlet, 6 is a pipeline pump; 7 is a nitrogen absorption device; 8 is a liquid Nitrogen recovery device; 9 is a grid partition; 10 is an electric control device; 11 is a microwave generator; 12 is a discharge port; 13 is a valve; 14 is an electric wire; 15 is a vacuum device; 16 is a gas-liquid separator; 17 is a condenser; 20 is a drying tower, 21 is a spray freezing bin, 22 is a buffer bin, and 23 is a vacuum drying bin.

[0036] A spray freeze-sublimation dryer, comprising a drying tower 20, the upper end of the drying tower 20 is provided with a feeding device 1, the lower part of the feeding device 1 is connected with a spraying device 2 through a pipeline...

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Abstract

The invention provides a spray freezing sublimation drying machine and belongs to the technical field of drying equipment for food, medicine, biological products and the like. The spray freezing sublimation drying machine is applicable to drying liquid materials and specifically comprises a drying tower for spray freezing sublimation, a feeding device is arranged on the upper portion of the drying tower, a spray device is connected to the bottom of the feeding device, two layers of grid type partition plates are arranged in the middle of the drying tower to divide the drying tower into three independent sealed spaces comprising a spray freezing bin, a buffer bin and a vacuum drying bin. The bottom of the drying tower is provided with a discharge outlet. The centrifugal spray freezing bin is connected with a liquid inert heat transfer medium injector, the wall of the spray freezing bin is provided with a gas inert heat transfer medium outlet, the vacuum drying bin is connected with a vacuum pumping device, and the side wall of the vacuum drying bin is provided with a heating device. The spray freezing sublimation drying machine is simple in structure, capable of continuously carrying out spray freezing sublimation drying operation, high in drying efficiency, good in solubility, particularly applicable to spray drying of various heat sensitive liquid materials and good in market prospect.

Description

technical field [0001] The invention relates to a spray drying equipment, in particular to a spray freeze-sublimation dryer which uses a liquid inert heat transfer medium to freeze liquid materials and perform vacuum sublimation drying. Background technique [0002] The spray dryer is a kind of continuous atmospheric pressure dryer. The liquid material is sprayed into mist with special equipment, and it is dried in contact with hot air. Used for drying liquids, suspensions and viscous liquids, such as milk, eggs, fruit juice and some medicines, etc. It is also used for drying fuels, intermediates, soap powder and inorganic salts, etc. However, there are many heat-sensitive active substances in materials that need to be spray-dried, such as food, medicine, and biological products, and these substances can be inactivated even when the temperature is higher than 65°C. Due to the high temperature of the hot air of the usual spray dryer, the temperature of the hot air inlet is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D1/18B01D7/00
CPCB01D1/18B01D7/00
Inventor 李梅青王星马玉玺
Owner ANHUI AGRICULTURAL UNIVERSITY
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