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