Tobacco curing kiln and tobacco curing process

Abstract

The invention provides a tobacco curing kiln and a tobacco curing process. An inner wall is provided with a plurality of air return openings and a plurality of air outlets, the air return openings and the air outlets are formed in a cross mode at the interval of a layer of tobacco leaves, circulating fans are arranged in air flues between heaters and the inner wall, and the two ends of the position between an outer wall and the inner wall are each provided with a heater. The tobacco curing process conducted through the tobacco curing kiln includes the steps that after heating is conducted, the temperature is raised to 36 DEG C at the speed of 1-2 DEG C per hour, and the dryness and humidity difference ranges from 2 DEG C to 4 DEG C; when tobacco leaves reach 20%-30% in the yellowing degree, the temperature is raised to 38 DEG C at the speed of 1 DEG C per hour, and the dryness and humidity difference ranges from 3 DEG C to 6 DEG C; when the tobacco leaves reach 70%-80% in the yellowing degree, the temperature is raised to 43 DEG C at the speed of 1 DEG C per hour, and the dryness and humidity difference ranges from 5 DEG C to 7 DEG C; when the tobacco leaves reach 95%-100% in the yellowing degree and the water loss ranges from 50%-60%, the temperature is raised to 53 DEG C at the speed of 1 DEG C per hour, it is guaranteed that all tobacco leaves are dried, and the wet bulb temperature ranges from 37 DEG C to 40 DEG C; then the temperature is raised to 65 DEG C-70 DEG C at the speed of 1 DEG C per hour, the wet bulb temperature ranges from 40 DEG C to 43 DEG C, temperature stabilizing is conducted for 2-8 hours, and drying is ended.

Description

technical field [0001] The invention relates to facilities and a curing process for curing tobacco leaves, in particular to a tobacco curing room and a tobacco leaf curing process. Background technique [0002] Analysis of the shortcomings of the current flue-cured room and tobacco leaves: 1. The quality of the tobacco leaves baked in ordinary flue-cured rooms is low, which cannot meet the needs of industrial cigarettes for high-quality tobacco. The main manifestations are low oil content, smooth and stiff leaves, and insufficient fragrance. The chemical composition is not coordinated enough. In addition to the characteristics of the tobacco leaves themselves and improper baking, the above reasons are mainly due to the large temperature difference between the upper and lower layers of tobacco leaves, and the faster the temperature rises, the greater the temperature difference between the upper and lower layers of tobacco leaves. The larger the temperature difference from th...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a tobacco flue-cured room and tobacco leaf curing process, which solves the problems of low oil content, smooth and stiff leaf surface, insufficient fragrance and uncoordinated chemical components in the current intensive tobacco-cured room, and solves the problems of the curing process. High coal consumption, high power consumption and long baking time

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