Bulk curing barn for tobacco leaf low temperature stem drying

Abstract

The invention discloses a tobacco leaf curing barn, and in particular relates to a bulk curing barn for low temperature stem drying. The barn comprises a bulk curing barn body. An internal dehumidification device is utilized to reduce the wet and dry bulb temperature in a stem drying stage after a fixation period by 53-54 DEG C to maintain the relative humidity Rh generated by the wet bulb temperature corresponding to the dry bulb temperature during the stem drying stage equal to or slightly lower than the relative humidity Rh corresponding to the dry and wet bulb temperature in the stem drying stage of the conventional drying process. A method of matching a variable frequency speed control fan with the cold air inlet valve opening degree to achieve that the relative humidity Rh in the stem drying stage is equal to or slightly lower than the relative humidity Rh in the stem drying stage of the conventional drying process. Finally, all tobacco leaves are dried within the time specifiedby the process. The bulk curing barn reduces the dry bulb temperature in the stem drying period, and is favorable for reducing the energy consumption. At the same time, the dried tobacco leaves not only has a significant increase in the orange color ratio, but also has a brighter color and a significantly improved taste.

Description

technical field [0001] The invention relates to a tobacco flue-curing room, in particular to a dense flue-cured tobacco room that adopts low-temperature curing during the drying period of flue-cured tobacco, and belongs to the technical field of tobacco modulation. technical background [0002] Flue-cured tobacco (comprising open flame flue-cured tobacco and fire pipe indirect heating flue-cured tobacco) has a history of hundreds of years as a type of tobacco. Since more than 180 years ago, people began to discover that the aroma of tobacco leaves baked by indirect heating of fire pipes is more pure and pleasant, and people have not stopped exploring related technologies of flue-cured tobacco baking. Since the large-scale construction of tobacco leaf intensive curing rooms in my country in 2008, hundreds of thousands of intensive curing rooms have been built and put into use nationwide, and have become the main facilities for tobacco leaf modulation and curing. Comprehensive...

AI Technical Summary

Problems solved by technology

[0012] 1) Dry gluten has low efficiency and high energy consumption. Keep the dry bulb temperature above 68°C for dozens of hours. At this time, the relative humidity in the drying room is already relatively low, and the dry bulb temperature is lower than the external ambient temperature ( The air temperature (such as 25°C) is much higher, and the temperature difference caused by the air intake during dehumidification is obvious. In order not to reduce the dry bulb temperature, a large amount of heat must be supplied, resulting in high energy consumption;

[0013] 2) It is easy to reduce the proportion of orange and deepen the color, which reduces the proportion of high-quality smoke

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