Tunnel-type hot-air tobacco-leaf-conditioning process and device used in process

Abstract

The invention relates to a tunnel-type hot-air tobacco-leaf-conditioning process. The tunnel-type hot-air tobacco-leaf-conditioning process is characterized by adopting the method of firstly warming and then humidifying, or the circulating method of firstly warming, then humidifying, then warming, and then humidifying, wherein tobacco leaves are conditioned in multiple stages and in gradients, the warming adopts the hot air method, a tunnel-type annular conveying belt mesh is adopted in the tobacco-leaf-conditioning process, the tobacco leaves and the conveying belt mesh are static relatively in the warming and humidifying processes, and under the condition that the volume of the tobacco leaves is not changed, the tobacco-leaf-conditioning efficiency is improved by adopting the manner of reducing the thicknesses of the tobacco leaves, increasing the areas, and enabling the hot air and the high-temperature and high-humidity atomized vapor-water mixture to penetrate a material layer. The tunnel-type hot-air tobacco-leaf-conditioning process has the beneficial effects that the process route of the tobacco leaves is shortened, the processing cost is reduced, the tobacco leaf breaking probability is reduced, the tobacco processing economic benefit is improved, the moisture uniformity of the tobacco leaves is improved, the slice-shaped structure of tobacco leaf processing is promoted, the process route is shortened, the cost is reduced, and the uniform and stable material is provided for a threshing unit.

Description

technical field [0001] The invention relates to the field of tobacco threshing and redrying processing. Background technique [0002] In the threshing and redrying production line of the tobacco processing industry, it is necessary to increase the moisture content of the tobacco leaves from 11-13% to 17-22%, and at the same time increase the temperature of the tobacco leaves from normal temperature to 40-80°C to meet the requirements of threshing. need. In the face of these technological requirements, at present, the temperature and humidity of the tobacco leaves are basically increased by the drum-type leaf moistening cylinder, that is, the tobacco leaves are tumbling and freely falling in a cylinder to increase the temperature and humidity. There is also poor moisture uniformity, which is easy to produce water-stained smoke, which has a great impact on the subsequent leaf-threshing index and re-baking index; there are also vacuum humidifier modes for increasing temperatur...

AI Technical Summary

Problems solved by technology

In the face of these technological requirements, at present, the temperature and humidity of the tobacco leaves are basically increased by the drum-type leaf moistening cylinder, that is, the tobacco leaves are tumbling and freely falling in a cylinder to increase the temperature and humidity. There is also poor moisture uniformity, which is easy to produce water-stained smoke, which has a great impact on the subsequent leaf-threshing index and re-baking index; there are also vacuum humidifier modes for increasing temperature and humidification. On the one hand, this mode has high processing intensity and can The consumption is high, and there are also problems such as discontinuous processing, uneven temperature and humidity of tobacco leaves, and difficulty in online real-time control of temperature and humidity.

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