Microwave vibration bed drying method of medium moisture content granular grains

A technology of microwave vibration and drying method, which is applied in the direction of saving seeds through drying, which can solve the problems of high energy consumption and high drying cost, and achieve the effect of low energy consumption, fast heating speed and automatic control

Active Publication Date: 2013-04-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has a high drying time and high quality, but the drying cost is high and the energy consumption is high

Method used

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  • Microwave vibration bed drying method of medium moisture content granular grains
  • Microwave vibration bed drying method of medium moisture content granular grains
  • Microwave vibration bed drying method of medium moisture content granular grains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Traditional microwave drying methods for rehydrated soybeans at different power levels (0.25w / g, 0.5w / g, 0.75w / g):

[0046] Weigh 200g of pretreated complete soybeans, place them in a container in a drying room, and heat them with 50w / g, 100w / g, and 150w / g microwave power for 50min, 35min, and 20min, respectively. Turn on the air dehumidification system and control the temperature At 4-10°C, after drying, cool down, take samples to measure moisture, color, temperature and burst rate, and record the numbers on the electric meter.

Embodiment 2

[0048] Microwave vibration bed drying method for rehydrated soybeans at different powers (0.25w / g, 0.5w / g, 0.75w / g):

[0049] Weigh 200g of pretreated complete soybeans, place them in a container in a drying room, and heat them with microwave power of 50w / g, 100w / g, and 150w / g respectively, and the vibration frequency of the motor is 250r / min; set the running time to 1.3s, and the intermittent time to 1s As a vibration cycle; the heating time is 50min, 35min, and 20min respectively. Turn on the air dehumidification system and control the temperature at 4-10°C. Record the meter numbers.

[0050] Table 2 Effect of traditional microwave drying and microwave vibrating bed drying methods on drying materials at different powers

[0051]

Embodiment 3

[0053] The microwave vibration bed drying method for rehydrated soybeans at a microwave power of 0.5W / g and different vibration frequencies (250r / min; 350r / min; 450r / min):

[0054] Weigh 200g of pretreated complete soybeans, place them in a drying room container, set the microwave power to 0.5W / g; use motor vibration frequencies of 250r / min, 350r / min, and 450r / min to heat respectively; set the operating time to 1.3s, intermittent The time is 1s as a vibration cycle; the heating time is 30min; the air dehumidification system is turned on, the temperature is controlled at 4-10°C, after the drying is completed, cool down, take samples to measure the moisture, color, temperature and bursting rate, and record the meter data .

[0055] Table 3 The influence of microwave vibration bed drying method on drying materials under different motor vibration frequencies under the microwave power of 0.5W / g

[0056]

[0057] From the results of Table 2 and Table 3, it can be drawn that the ...

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Abstract

The invention relates to a microwave vibration bed drying method of medium moisture content granular grains. The microwave drying method provided by the invention applies the microwave technology to the drying process of grains by means of heat transfer enhancement by vibration, and dries the materials through steps of sorting and maintaining constant humidity, microwave drying of vibration bed (negative pressure exhaust), aeration-cooling and dehumidifying and the like. Dependence on distribution of the electromagnetic field is weakened by changing the position of materials in the microwave field, so as to avoid local overheating of materials caused by conventional microwave drying and improve the uniformity of absorbing the microwave, therebyimproving the quality of dried product. Compared with the existing drying method, the method provided by the invention has fast heating speed and short drying time, even heating, and high product quality and can well maintain vitamins in food and original color, aroma and taste. The invention thoroughly changes the effect of simply superposing hot air and microwave in spouted bed microwave drying process in prior art, really realizes energy conservation and high efficiency, reduces the cost and is convenient to put on production and automatical control.

Description

technical field [0001] The present invention relates to a method for food processing and preservation, more specifically, the present invention relates to a method for drying food grains suitable for industrial production, that is, a microwave vibration bed drying method for granular grains with medium moisture content. Background technique [0002] China's modern drying technology has gradually developed since the 1950s. With the joint efforts of several generations, my country's drying technology has undergone continuous evolution and innovation, and three drying technology standards have been basically determined, namely to ensure product quality; Environmental protection and pollution-free; save energy consumption. Under the vigorous promotion of market demand, the development of drying technology in my country has advanced by leaps and bounds. At present, the domestic market share of domestic drying equipment has reached more than 80%, and it is expected to reach more t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B9/08
Inventor 范大明赵建新闫博文陈卫张灏王丽云何天琦朱佳琳
Owner JIANGNAN UNIV
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