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Method of oxygen reduction, dehumidification and mold prevention during tobacco storage

A tobacco leaf and anti-mildew technology, which is applied in the field of storage, can solve the problems of unsuitable tobacco leaf sealing tents, moisture resurgence from medicaments, and slow dehumidification of hygroscopic agents, achieving good mold removal effects, short dehumidification time, and significant economic benefits.

Active Publication Date: 2015-03-11
湖南华望熏蒸消毒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Application No.: 200810199158.0, 200910176120.6 and Chinese Patent Publication No.: CN 101360792A The hygroscopic agents disclosed can absorb water vapor in the air, thereby achieving the effect of dehumidification and anti-mildew, but the dehumidification of the hygroscopic agent is slow, and the absorbed moisture does not The dehumidification is not complete due to the airtight tent that is not discharged, and there is a possibility that the agent will emit moisture and regain moisture
This method dehumidifies thoroughly, but it is not suitable for airtight tents with a lot of tobacco leaves

Method used

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  • Method of oxygen reduction, dehumidification and mold prevention during tobacco storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this example, 100 pieces of rebaked tobacco are used, and the volume of the stack is about 60m 3 , the moisture content of tobacco leaves is 13.7%. figure 1 It is a schematic diagram of the connection between the nitrogen-generating equipment and the airtight tent in this embodiment.

[0033] The nitrogen-generating equipment in this embodiment adopts the membrane separation nitrogen-generating equipment disclosed in the patent authorization number CN 2O1626832U. The equipment is a kind of nitrogen making equipment that can circulate the gas in the sealed tent to reduce oxygen and dehumidify. The nitrogen production capacity of the nitrogen making equipment is 20m 3 / h, the purity of the produced nitrogen is 99.95%.

[0034] Tobacco leaf dehumidification mildew prevention method comprises the steps in the present embodiment:

[0035] (1) Tobacco leaf stacking is sealed and stored with airtight tent 5, and air inlet pipe and air outlet pipe are installed in the ai...

Embodiment 2

[0048] In this example, 300 pieces of rebaked tobacco are used, and the volume of the tobacco is about 180m 3 , the moisture content of the tobacco leaves is 17.6%.

[0049] The steps included in this embodiment are basically the same as in Embodiment 1, the difference is that:

[0050] What the nitrogen-generating equipment in this embodiment adopts is pressure swing adsorption nitrogen-generating equipment, and the nitrogen-generating capacity of nitrogen-generating equipment is 40m 3 / h, the purity of the produced nitrogen is 99.9%.

[0051] The composite film used in step (1) is a 0.08mm polyvinyl chloride composite film, and the moisture-proof protection is kraft paper.

[0052] In step (3), the oxygen concentration in the airtight tent is reduced to 0.1%.

[0053] In step (4), adjust the cold-drying system to produce air with a relative humidity of 30%, and the circulation dehumidification time is 120 hours, so that the air humidity in the sealed tent reaches 55%.

...

Embodiment 3

[0057] In this example, 500 pieces of rebaked tobacco are used, and the volume of the stack is about 300m 3 , the moisture content of tobacco leaves is 19.4%.

[0058] The nitrogen-generating equipment in this embodiment adopts membrane separation nitrogen-generating equipment, and the nitrogen yield is 60m 3 / h, the purity of the produced nitrogen is 95%.

[0059] The composite film used in step (1) is a 0.10mm high-barrier nylon composite film, and the moisture-proof protection is made of cardboard.

[0060] In step (3), the oxygen concentration in the airtight tent is reduced to 10%.

[0061] In step (4), the cold-drying system is adjusted to produce air with a relative humidity of 0, and the circulation dehumidification time is 240 hours, so that the air humidity in the sealed tent reaches 65%.

[0062] This humidity is maintained for 30 days in step (5).

[0063] After dehumidification, the moisture content of the tobacco leaves in the sealed tent is stable at 12.5%, ...

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Abstract

The invention provides a method of oxygen reduction, dehumidification and mold prevention during tobacco storage. Firstly, a sealing curtain for a tobacco pile is stored in a sealed way; the tobacco pile reduces the oxygen concentration in the sealing curtain to 0.1 to 10 percent through nitrogen output through nitrogen generating equipment, and then a cooling and drying system of the nitrogen generating equipment is communicated with the interior of the sealing curtain; and the cooling and drying system of the nitrogen generating equipment is singly turned on to remove excess moisture, so that dehumidification and mold prevention are achieved. The method is fast in dehumidification and good in mold prevention effect, and guarantees the tobacco mellowing quality.

Description

technical field [0001] The invention belongs to the technical field of storage, and relates to a method for reducing oxygen, dehumidifying and preventing mildew during tobacco leaf storage. Background technique [0002] At present, the method of sealed ultra-low oxygen storage (Ultra-low oxygen, ULO) is widely used in fields such as food, vegetables, and tobacco that need to be stored. This storage method controls the oxygen in the storage environment below 2%, so that the respiratory activity of the stored items is inhibited, and the consumed nutrients are greatly reduced, so the nutritional content and quality of the items can be maintained. At the same time, the ultra-low oxygen environment can also inhibit and kill microorganisms and plant diseases and insect pests in the storage environment, so it is considered to be the most energy-saving and environmentally friendly storage method in the world today. [0003] Studies have found that when the oxygen concentration in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B15/20
Inventor 刘师伟曹寅瞿佳政朱元郴
Owner 湖南华望熏蒸消毒有限公司