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Microwave spray drier

A drying and heating drying technology, applied in the field of spray drying and microwave, to achieve the effect of improving thermal efficiency, small equipment volume, and reducing the possibility of material pollution

Inactive Publication Date: 2006-01-04
刘岷汀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the invention patent document of CN1163313A does not expose the method that sprayed liquid droplet is dried to finished product particle directly with microwave

Method used

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  • Microwave spray drier

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Experimental program
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Effect test

Embodiment Construction

[0020] Group No. 1: Liquid (solution, mixed solution, suspension, emulsion, slurry) concentration: about 60% (w / w);

[0021] Particle size range after atomization: less than about 2000μm;

[0022] The particle size range of mist droplets entering the heating and drying chamber: less than about 100 μm;

[0023] Effective microwave electric field strength in heating and drying chamber: about 500 kV / m;

[0024] Heat radiation intensity in heating and drying room: more than 10 kW / square meter

[0025] Heating and drying time: about 0.1 seconds;

[0026] Carrier fluid: air;

[0027] Working pressure in heating and drying chamber: about 0.2MPa (absolute pressure);

[0028] Group

No

liquid thick

Spend

Heating and drying indoor pellets

diameter

Electric field strength

(kV / m)

drying time

(Second)

carrier stream

body

definitely work

pressure

(MPa)

2

aro...

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PUM

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Abstract

The microwave and spray drier adopts microwave drying and spray drying technology. It is superior to available spray drying machine, and the steam during drying material may be also used as the heat source for other apparatus. Material liquid is atomized into miniature fog, after being selected, the fog is dried in the microwave heating and drying chamber to form powder, and the powder is intercepted with the filter to obtain dried powder product. The microwave and spray drier consists of spraying nozzle, atomizing separation chamber, separator, heating and drying chamber, separator, filter, steam and carrier gas outlet, carrier gas inlet and reflux pipeline. The present invention is used in food production, pharmaceutical, chemical and other industry to prepare powder with various kinds of liquid, and may be used in industrial nanometer powder material production.

Description

【Technical field】 [0001] The invention relates to the technical fields of microwave and spray drying, in particular to a method and a device for atomizing and sorting feed liquid and heating the sprayed liquid droplets with microwaves to dry them to obtain powder and granular products. 【Background technique】 [0002] Spray drying is a drying process in which the raw material liquid (solution, emulsion, suspension or slurry) is dispersed into droplets with an atomizer, and then the droplets are heated by energy to dry them to obtain a powder product. [0003] Existing spray dryers use the heat energy contained in the hot air to heat the droplets by directly contacting the hot air with the mist. Obtaining hot air needs to pay a huge energy price. Generally, the energy used to heat hot air is two to three times the energy required for drying, which causes a lot of energy waste. Secondly, the required hot air flow rate is usually ten to thirty times that of the steam flow rate ...

Claims

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Application Information

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IPC IPC(8): B01J2/04B01D1/18
Inventor 刘岷汀
Owner 刘岷汀
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