Six-section baking process for upper tobacco leaves of Bina No.1

Abstract

The invention discloses a six-section baking process for upper tobacco leaves of Bina No.1, which comprises a yellowing section, a wilting section, a moisture reduction I, a moisture reduction II or achanging leaf section, a dry leaf section and a dry leaf-rib section, wherein each section has a heating period and a temperature stabilizing period, and is provided with a dry wet bulb temperature fluctuation error and a heating rate; the yellowing section, the wilting section, the moisture reduction II or the changing leaf section are provided with two heating periods, and the heating rates ofthe two heating periods are different; the other sections are provided with only one heating period; the wilting section and the moisture reduction section I take the dry bulb temperature and the wetbulb temperature as the control targets, and the other sections take the dry bulb temperature as the control target. According to the six-section baking process for the upper tobacco leaves of Bina No.1, the operability of the baking process is strong, the dry bulb temperature can be uniformly increased according to the set heating rate in the heating period, and the dry bulb temperature and the wet bulb temperature can be fluctuated within a set range in the temperature stabilizing period. According to the six-section baking process for the upper tobacco leaves of Bina No.1, appearance quality, smoking quality and chemical composition coordination of the tobacco leaves can be improved, income of tobacco farmers can be increased, and baking cost can be reduced.

Description

technical field [0001] The tobacco leaf curing process to which the present invention belongs, especially a six-stage curing process adopted for the upper tobacco leaves of Bina No. 1. Background technique [0002] At present, domestic tobacco leaves are mostly baked in intensive curing rooms. This kind of baking equipment can not only save energy and labor, but also improve the quality of tobacco leaves. However, in actual operation and application, it is found that the tobacco leaves baked by this type of equipment will produce problems such as roasted aroma, light color, and tight tissue structure, which have a great impact on the quality of tobacco leaf curing. According to the investigation, the main reason is that although the construction of intensive baking houses has been reformed and innovated in China, the traditional three-stage baking process is still used in the baking process. Although the baking process has been partially improved, most of them The roasting ...

AI Technical Summary

Problems solved by technology

Since the variety was promoted, researchers have conducted research and analysis on the planting and quality characteristics of this variety, but there is a lack of research on the baking process of this variety, and the traditional "three-stage five-step" baking process is still used. This baking process is a general baking technical specification, which is based on the traditional dense baking room. Although some researchers have made researches and improvements on this process, there are still some problems: ①Traditional baking The process cannot meet the baking needs of advanced intensive ovens, such as the internal circulation intensive oven baking system, which removes the moisture removal window on the original oven and changes it to dehumidification. Compared with dehumidification, dehumidification is used. The control requirements for heating rate, temperature stabilization time, and real-time dry and wet bulb temperature difference are higher. The wet bulb temperature target value set in the dehumidification process is completely different from the wet bulb temperature target value set in the traditional baking process. , using heat pump and electric energy for heating, so that the heating and heating rate control is more flexible, but the traditional "three-stage five-step" baking process cannot meet; ②The traditional curing process only focuses on the dehydration and dehumidification of tobacco leaves, while Without considering the transformation of the internal substances of the tobacco leaves and the optimum temperature and humidity required for the synthesis, the cured tobacco leaves have light color, insufficient oil content, reduced aroma, and low smoking quality, thereby reducing the economic value of the tobacco leaves themselves and cannot be fully utilized. The advantages and potential of the new variety of Chubina No. 1 have reduced the income of tobacco farmers; ③The traditional curing process can no longer match the advanced control system. For the current advanced control system, the tobacco leaves in the tobacco chamber can be withered according to the advanced curing process. Automatically adjust the static pressure and leaf gap wind speed in the barn according to the degree of dryness, so that the real-time dry bulb temperature error of each point in the smoke chamber is within a small range, thereby avoiding the temperature difference between the upper shed, middle shed and lower shed. Poor results in differences in the appearance and taste of tobacco leaves

Images