Intermittent drying system and method of multifunctional fluidized bed for freezing, spraying and pelleting

A freeze-spray and drying system technology, applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., can solve the problems of limited function, high investment cost, inflexible operation, etc., to reduce quality degradation, mix distribution Uniform, wide-ranging effects

Active Publication Date: 2010-06-16
SHANDONG TIANLI DRYING TECH & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the equipment for spray freeze-drying technology is separated in space: that is, the spray freeze stage and the normal pressure freeze-dry stage are completed in different drying chambers, such as the spray freeze-drying in the patent CN200820129701.5 (integrated spray freeze-drying) The equipment is integrated, and the drying chamber is divided into a "frozen particle storage chamber" and a "freezing chamber". Although continuous operation can be realized, a certain amount of frozen particles must be kept in the frozen particle storage chamber first. The cost, efficiency and time Compared with segmented intermittent operation, there is no obv

Method used

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  • Intermittent drying system and method of multifunctional fluidized bed for freezing, spraying and pelleting
  • Intermittent drying system and method of multifunctional fluidized bed for freezing, spraying and pelleting
  • Intermittent drying system and method of multifunctional fluidized bed for freezing, spraying and pelleting

Examples

Experimental program
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Effect test

Example Embodiment

[0056] Example 1:

[0057] The first method of the present invention is:

[0058] 1) Turn on the vacuum pump 7 to form a closed loop system vacuum environment, and the vacuum degree is 0.01 MPa. Then turn on the heat pump evaporator 1, heat pump compressor 2, heat pump throttle valve 3, heat pump condenser 4, fan and wind direction commutator 5, and cold air enters from the top of the drying chamber 12, reducing the overall temperature in the system to -50°C To -60℃; (The temperature can also be -53℃ or -55℃ or -58℃)

[0059] 2) Turn on the metering pump 8, and use the atomizer 13 to atomize the solution into fine droplets, and the freezing medium around the atomizer: -50°C to -60°C (the temperature can also be -52°C or -54°C or- 58℃) low-temperature air or inert gas or one or several combinations of the following solvents: ethanol, toluene, methanol, n-butanol, tert-butanol, etc.; it flows side by side with the droplets to quickly freeze the droplets into small Solid particles, w...

Example Embodiment

[0064] Example 2:

[0065] The second drying method of the present invention is:

[0066] 1) Turn on the heat pump evaporator 1, heat pump compressor 2, heat pump throttle valve 3, heat pump condenser 4, fan and wind direction commutator 5, cold air enters from the top of the drying chamber 12, reducing the overall temperature in the system to -50 ℃ to -60℃ (the temperature can also be -53℃ or -55℃ or -58℃);

[0067] 2) Turn on the metering pump 8, and use the atomizer 13 to atomize the solution into fine droplets, and the freezing medium around the atomizer: -50°C to -60°C (the temperature can also be -52°C or -54°C or- 58°C) low-temperature air or inert gas or organic solution (for example) flows co-currently with the droplets to quickly freeze the droplets into fine solid particles, and the solid particles settle in the fluidization cylinder 11;

[0068] 3) After the set time (depending on the amount of processed materials), when the solid particles in the fluidization cylinder 11...

Example Embodiment

[0072] Example 3:

[0073] The third drying method of the present invention is:

[0074] 1) Put the material to be dried into the fluidization cylinder 11 from the hand hole of the drying chamber 12, and turn on the vacuum pump 7 to form a closed-loop vacuum environment, with a vacuum degree of 0.01 MPa. Then turn on the electric heater 6, heat pump evaporator 1, heat pump compressor 2, heat pump throttle valve 3, heat pump condenser 4, fan and wind direction commutator 5;

[0075] 2) The low-temperature hot air at 60°C~80°C (the temperature can also be 65°C or 70°C or 75°C) enters from the bottom of the drying chamber 12. When the low-temperature hot air passes through the wet material, the moisture in the material is taken out, and the water content in the hot air increase;

[0076] 3) When the hot air passes through the heat pump evaporator 1, the air is cooled to 0°C, and the humid air reaches saturation. The moisture in it condenses out to achieve the purpose of dehumidification...

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Abstract

The invention discloses intermittent drying system and method of a multifunctional fluidized bed for freezing, spraying and pelleting, which has the advantages of flexible structure, variety methods, low use cost and the like. The structure is characterized by comprising a refrigeration system and a fluidized bed drying system for spraying and freezing in vacuum, wherein a vacuum spraying drying system is connected with a feeding system, the refrigeration system is connected with the feeding end of the vacuum spraying drying system, the other path of pipeline of the refrigeration pipeline is connected with a fluidized device of the vacuum spraying drying system through a pulse adjusting device to form a closed ring system, thereby flexible switch among different drying methods can be realized, and intermittent operation is carried out. The invention is mainly used for dewatering storage of products with high additional value, such as liquid foods, medicines, biological products and the like and development operation of new techniques of dewatering products such as liquid foods, medicines and biological products.

Description

technical field [0001] The invention relates to a freeze-spray granulation fluidized bed multifunctional intermittent drying system and method, which belongs to the technical field of process equipment and is mainly used for dehydration preservation of food, medicine, biological products, micro-nano powder and the like. technical background [0002] Spray freezing technology uses an atomization device to quickly freeze liquid raw materials into fine particles by a low-temperature freezing medium. Because the freezing time is usually a few seconds and the speed is fast, small-sized ice crystals are formed, which can reduce the impact on cells and other functions of biological products. The destruction of the structure can quickly form a stable solid-state structure, ensure the microscopic pore structure of the original product, and preserve the physical and chemical properties of the original product to the greatest extent. [0003] Atmospheric freeze-drying operates under no...

Claims

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Application Information

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IPC IPC(8): F26B5/06
Inventor 李胜苏伟光李祥宇傅宪辉周孟崔峰
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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