Plant stem and leave drying method

A technology of plant stems and leaves and drying method, which is applied in the directions of drying solid materials, heating to dry solid materials, drying, etc., which can solve the problems of dry and cracked surfaces of plant stems and leaves, high drying temperature, and long time, and achieve low ambient temperature, The effect of low energy consumption and convenient operation

Active Publication Date: 2013-07-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the stems and leaves of plants in tea production plants or plant raw material processing plants are generally dried in ovens or microwaves. The drying method has the following disadvantages: long time, high drying temperature, resulting in high energy consumption; High, causing the surface of plant stems and leaves to appear dry and scorched

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The drying temperature is controlled at 70°C. Put the tea products into the three-layer partition of the microwave fluidized bed equipment (about 150 grams per layer), set the microwave power to 400W, and fully open the adjustment valve. At this time, the wind speed is 30m / s , first blow with hot air at 60°C for 20 minutes, then turn on the microwave fluidized bed equipment for drying, and the drying time is 30 minutes. After inspection, the moisture content of the dried product is 4%.

Embodiment 2

[0017] The drying temperature is controlled at 80°C. Put the tea products into the three-layer partition of the microwave fluidized bed equipment (about 250 grams per layer), set the microwave power to 600W, and fully open the adjustment valve. At this time, the wind speed is 25m / s , blow with hot air at 70°C for 20 minutes, then dry with microwave for 5 minutes, and then turn on the microwave fluidized bed equipment for drying, the drying time is 40 minutes. After inspection, the moisture content of the dried product is 5%.

Embodiment 3

[0019] The drying temperature is controlled at 80°C. Put the tea products into the three-layer partition of the microwave fluidized bed equipment (about 200 grams per layer), set the microwave power to 800W, and fully open the adjustment valve. At this time, the wind speed is 25m / s , first use microwave to dry for 20 minutes, then turn on microwave fluidized bed drying, and the drying time is 30 minutes. After inspection, the moisture content of the dried product is 6%.

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PUM

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Abstract

The invention discloses a plant stem and leave drying method. Microwave fluidized bed equipment is used for drying wet materials of the plant stem and leave, the patent number of the microwave fluidized bed equipment is 201220174418.8, and the microwave fluidized bed equipment is recorded in China patent for utility models with the title of 'microwave fluidized bed equipment for drying solid particles'. The plant stem and leave drying method includes that drying temperature is controlled at 50-90 DEG C, and wind speed is at 0-30m/s; and hot wind or microwave are combined to be used for drying the time when the microwave fluidized bed equipment is adopted; and diameters of the wet materials of the plant leaves are 2cm-8cm, and water content is 12%-25%. With the plant stem and leave drying method, the problems of parts of the plant leaves being burnt with uneven drying and color fading caused by high local temperature, long time consumption and uneven drying when the plant leaves are dried are solved. The plant stem and leave drying method of the plant leaves has the advantages that environment temperature is low when the plant leaves are dried, surface appearance of samples are not affected much, energy consumption is low, processing is simple, and operation is facilitated and the like.

Description

[0001] technical field [0002] The invention relates to a method for drying plant stems and leaves. Background technique [0003] At present, the stems and leaves of plants in tea production plants or plant raw material processing plants are generally dried in ovens or microwaves. The drying method has the following disadvantages: long time, high drying temperature, resulting in high energy consumption; High, causing the surface of plant stems and leaves to appear cracked and scorched. Contents of the invention [0004] The purpose of the invention is to overcome the deficiencies of the prior art and provide a method for drying plant stems and leaves. The method of the invention has the advantages of simple operation, low energy consumption, short time consumption and low drying temperature, and can avoid the scorching phenomenon of the surface of plant stems and leaves. [0005] In order to achieve the above object, the present invention adopts the following techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/08F26B3/347A23F3/06
Inventor 纪红兵曾晖茹赛红
Owner SUN YAT SEN UNIV
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