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Hot air drying method for rapeseed

A technology of hot air drying and rapeseed, which is applied in the direction of heating to dry solid materials, drying solid materials, and drying gas layout, etc., can solve the problems of lack of uniform standards for temperature and time, low drying quality, etc., and is conducive to maintenance, storage and drying The effect of high efficiency and short operating time

Inactive Publication Date: 2020-12-29
祁东县双桥粮食购销有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no unified standard for temperature and time in the current hot air drying technology, and the drying quality is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for drying rapeseed with hot air, comprising the following steps:

[0021] 1) Lay the processed fresh rapeseed on the hot air drying machine with a laying thickness of 2.5cm;

[0022] 2) hot air drying the rapeseed to obtain a dried rapeseed product, the moisture content of the rapeseed product is 5%;

[0023] Wherein, the vacuum pressure value of the hot air drying in step 2) is controlled at 0.088MPa-0.1MPa, the temperature is 50°C, and the drying time is 80min. The drying of the hot air drying machine is usually achieved through the following process: first, the heat source heats the internal air, and the fan sends the high-temperature air (or flue gas) in the heat source into the cooling pipe channel of the heat exchanger, and then the external cold air is blown by the fan. Inhaled into the heat exchange space of the heat exchanger, the incoming cold air flows along the heating channel of the heat exchanger and is finally heated, and the temperature of the...

Embodiment 2

[0028] A method for drying rapeseed with hot air, comprising the following steps:

[0029] 1) Lay the processed fresh rapeseed on the hot air drying machine with a laying thickness of 3cm;

[0030] 2) Drying the rapeseed with hot air to obtain a dried rapeseed product, the moisture content of the rapeseed product is 6%;

[0031] Wherein, the vacuum pressure value of the hot air drying in step 2) is controlled at 0.088MPa-0.1MPa, the temperature is 75°C, and the drying time is 120min.

[0032] In this embodiment, in step 1), the treatment step includes removing sandy soil, vegetation impurities and empty rapeseed shells, so that the impurity content is ≤ 2%, effectively improving the oil extraction efficiency; using steam to humidify for 3-5 minutes, It makes the internal tissues of rapeseed actively germinate and effectively improves the oil production rate of rapeseed.

[0033] In this embodiment, in step 2), the vacuum pressure value of the hot air drying operation is cont...

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PUM

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Abstract

The invention discloses a hot air drying method for rapeseed. The hot air drying method comprises the following steps of laying treated fresh rapeseed on a hot air drying machine, wherein the laying thickness is 2 cm-3 cm; and then drying the rapeseed through hot air, wherein the vacuum pressure value for drying is controlled to be 0.088 MPa-0.1 MPa, the temperature is 50 DEG C-75 DEG C, the drying time is 60 min-120 min, and rapeseed products with the water content of 9% or below are prepared. According to the method, dry rapeseed products with lower water content and higher rapeseed elementcontent can be obtained in a shorter time, so that the drying efficiency and drying quality of the rapeseed are guaranteed.

Description

technical field [0001] The invention relates to a rapeseed drying method, in particular to a rapeseed hot air drying method. Background technique [0002] Rapeseed is rich in protein and has significant hygroscopicity, which is a special property different from rice, wheat and other food crops and other oil crops. In addition, rapeseed also has the characteristics of small particles, high sphericity, small porosity, and not easy to dissipate heat. When the moisture content of rapeseed is higher than the safe moisture content, it is very easy to rot and mold even within a short period of time. Therefore, the freshly harvested rapeseed needs to be dried in time to the safe storage moisture content range, and its moisture content should be reduced to below 9% for safe storage. [0003] The influencing factors of rapeseed drying are not only related to the drying medium parameters (temperature, vacuum degree, air humidity) but also have a certain relationship with the drying eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/04F26B9/06F26B21/10F26B25/22C11B1/04
CPCC11B1/04F26B3/04F26B9/06F26B21/10F26B25/22
Inventor 高扬华
Owner 祁东县双桥粮食购销有限责任公司