Method and device for ventilation in primary tobacco baking in bulk curing barn

Abstract

The invention relates to a method and a device for the ventilation in primary tobacco baking in a bulk curing barn, which belong to the technical field of cured tobacco curing. Stratified air supply is adopted according to the layer number of tobacco which is placed in a tobacco chamber of the bulk curing barn; a horizontal blast tube is arranged in the centre of each layer along the length direction of the tobacco chamber to supply air to the two sides; the horizontal blast tubes of all the layers are connected with vertical blast tubes; and the air is returned at the lower part of the tobacco chamber in a centralized way to reduce the temperature distribution non-uniformity in the horizontal and vertical directions in the tobacco chamber. A stratified air supply type ventilation device for the primary tobacco baking in the bulk curing barn consists of a circulating fan, an air supply main, a plenum chamber, the vertical blast tubes, the horizontal blast tubes, an air diffuser, blast tube brackets, a moisture outlet, a return air inlet, an air heating furnace, a baffle and an air tuyere. The method and the device for ventilation in the primary tobacco baking in the bulk cuing barn improve the tobacco baking quality and reduce the energy consumption of tobacco baking.

Description

technical field [0001] The invention relates to a ventilation method and a ventilation device for primary curing of tobacco leaves in a dense curing barn, belonging to the technical field of flue-cured tobacco modulation. Background technique [0002] Curing is a key factor in determining the quality and usability of tobacco leaves. Advanced tobacco leaf curing methods and equipment are the basis for accurately realizing the scientific curing process, improving the quality of tobacco leaves, and reducing labor intensity and production costs. [0003] At present, the ventilation methods of dense barns mainly include air-flow ascending type and air-flow descending type. The airflow ascending type uses a circulating fan to centrally supply air from the lower part of the smoking room, and the hot air sent flows through the suspended tobacco leaves in the smoking room and returns to the heating room from the upper part of the same side of the smoking room. Due to the large size...

AI Technical Summary

Problems solved by technology

The uneven distribution of flow velocity and temperature and humidity, on the one hand, reduces the quality of the tobacco leaves; on the other hand, the different parts of the tobacco leaves have different curing progress, resulting in longer overall curing time and increased energy consumption.

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