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Drying method with combination of microwave and air energy

A technology of air energy and microwave, which is applied in drying, drying solid materials, heating to dry solid materials, etc., can solve the problem of insufficient theoretical research on microwave drying instantaneous mass transfer and heat transfer, staying in the experimental stage or small-scale production stage, microwave drying Drying technology application research field is narrow and other issues, to achieve the effect of strong drying thoroughness, improved drying efficiency, and fast drying speed

Inactive Publication Date: 2017-09-22
镇江虎瑞生物科技有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] my country started relatively late in the application research of microwave drying technology. Although many achievements have been made, the application research field of microwave drying technology is relatively narrow, and most of them stay in the experimental stage or small-scale production stage. To expand, the theoretical research on instantaneous mass transfer and heat transfer of microwave drying is not enough, and the development of equipment and instruments supporting microwave drying technology still needs to be strengthened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a drying method using a combination of microwave and air energy, and composite drying is performed by using high-temperature gas provided by microwave and air energy. In the drying process, microwaves can be used first to heat and release the moisture inside the object to be dried, and then use the heat energy generated by the air to heat the airflow to generate high-temperature gas, and further dry the object to be dried, achieving the synergy of internal and external drying. Increased drying rate.

[0019] The above drying process can be carried out in a dry state, in which the microwave emission source is set inside the drying box, either on the side wall or on the top, or can be set on the side wall and the top at the same time to achieve better microwave drying Effect. The high-temperature gas inlet provided by the air can be set at the bottom of the drying box or at the side wall. The frequency range of microwave drying is 800-5000MHz, a...

Embodiment 2

[0021] This embodiment provides a specific implementation method for drying Chinese medicinal materials based on the combination of microwave and air energy in Example 1. First, the Chinese medicinal materials are crushed or cut into small pieces, placed in a drying oven, and the microwave frequency is first adjusted. 1500MHz, dry for 3-5 minutes, after the water vapor inside the traditional Chinese medicine starts to evaporate, the air can be introduced into the high-temperature gas with a temperature of 60°C, and the microwave is used to dry, and after continuing to dry for 30-40 minutes, the moisture content of the medicinal material is determined to be greater than 5 %, set the high-temperature gas temperature to 80°C, and the microwave frequency to 1800MHz, and continue drying for 20 minutes. It is measured that the moisture content of the traditional Chinese medicine is less than 1%, and the drying is completed.

[0022] The drying method provided by the present invention...

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Abstract

The invention discloses a drying method with combination of microwave and air energy. Combined drying is conducted through high-temperature gas provided by the microwave and the air energy. According to the drying method with combination of the microwave and the air energy, the characteristic that the high-temperature gas is generated by the microwave and the air energy is combined, internal drying and external further drying of to-be-dried objects are matched, and the drying efficiency is improved to a great extent.

Description

technical field [0001] The invention belongs to the field of microwave drying, and in particular relates to a drying method combining microwave and air energy. Background technique [0002] Microwave drying is different from traditional drying methods, and its heat conduction direction is the same as that of moisture diffusion. Compared with the traditional drying method, it has the advantages of high drying rate, energy saving, high production efficiency, uniform drying, clean production, easy automatic control and improved product quality, so it has been paid more and more attention in various fields of drying. As early as the 1960s, a large amount of research was carried out on the application and theory of microwave drying technology abroad, and it has been further developed in recent decades. [0003] Traditional drying methods, such as flame, hot air, steam, electric heating, etc., are all external heating and drying. After the surface of the material absorbs heat, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/06F26B3/347
CPCF26B3/06F26B3/347
Inventor 王俗新王月阳
Owner 镇江虎瑞生物科技有限公司
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