A kind of low-temperature drying process method of flue-cured tobacco

Abstract

The invention discloses a low-temperature dry gluten roasting process for flue-cured tobacco. On the premise of not changing the yellowing period and the color fixation period of the conventional roasting process, the conventional roasting process is executed until the color fixation period ends, and then enters the gluten dry period. The final target dry bulb temperature does not need to be set to the usual 68°C in the past, as long as it is along or slightly higher than the highest temperature during the color fixation period, the control temperature of the wet bulb is properly set, and then by appropriately increasing the ventilation volume or by dehumidification Mechanical (such as heat pump dehumidifier and other condensing internal dehumidification or other physical and chemical dehumidification methods) can effectively reduce the relative humidity in the barn gradually, and maintain the wet bulb temperature corresponding to the dry bulb temperature during the dry gluten period. The relative humidity Rh generated by the temperature is equal to or slightly lower than the relative humidity Rh corresponding to the wet and dry bulb temperature in the dry tendon period of the conventional curing process, and finally ensures that the tobacco leaves are completely dried within the time specified by the process.

Description

technical field [0001] The invention discloses a process method for preparing flue-cured tobacco during the dry tendon period, in particular to a process method for reducing the curing temperature during the dry tendon period of flue-cured tobacco, belonging to the technical field of tobacco production. Background technique [0002] As a type of tobacco, flue-cured tobacco (including open fire flue-cured tobacco and fire-pipe indirect heating flue-cured tobacco) has a history of hundreds of years. Since more than 180 years ago, people began to discover that the aroma of tobacco leaves roasted by indirect heating of fire pipes is more pure and pleasant, and people have never stopped exploring related technologies of flue-cured tobacco roasting. The curing technology and the curing facilities often complement each other and depend on each other, which also makes the flue-cured tobacco curing technology and the curing facilities capable of realizing the curing technology as the...

AI Technical Summary

Problems solved by technology

[0008] 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;

[0009] 2) It is easy to reduce the proportion of orange and deepen the color, which reduces the proportion of high-quality smoke

Images