Flue-cured tobacco lamina modified atmosphere storage method convenient for later oxygen regulation

Abstract

The invention provides a flue-cured tobacco lamina modified atmosphere storage method convenient for later oxygen regulation, and relates to the technical field of tobacco mellowing storage. The method comprises the following steps of putting an atmosphere regulating agents around the bottom and on the top surface of a tobacco lamina stack, wherein the putting amount of the atmosphere regulating agents is 1.2-1.5 kg / m < 3 >; respectively covering a moisture-proof breathable film and a barrier film on the surface of the tobacco stack in which the atmosphere regulating agents are put according to a sequence, and sealing; and when the oxygen concentration of the tobacco stack needs to be increased again, introducing the dry sterile air into the tobacco stack, and when the oxygen concentrationin the tobacco stack is increased to a target range value, stopping inflation, and releasing the sealing state of the barrier film. The method provided by the invention can effectively avoid the problems that the atmosphere regulating agent resources are wasted, the dew formation is generated during the oxygen regulation operation of the tobacco stack, the external insect sources, mould and moisture easily enter the tobacco stack to influence the tobacco leaf quality, the oxygen regulation operation consumes manpower, the efficiency is low and the operation quality cannot be guaranteed, and realizes the rapid, safe, stable and efficient tobacco stack oxygen regulation operation links.

Description

technical field [0001] The invention relates to the technical field of tobacco aging storage, in particular to a modified atmosphere storage method for sheet tobacco which facilitates later oxygen adjustment. Background technique [0002] Tobacco is one of the important economic crops in our country and an important processing raw material for the cigarette industry, with huge economic value. After the tobacco leaves are harvested and baked, generally in order to remove the green miscellaneous gas of the tobacco leaves and reduce the irritation of the taste, improve the aroma quality of the taste, and reconcile the chemical components inside the tobacco leaves, it takes about 2 years in the natural environment (certain Oxygen concentration and temperature and humidity conditions) storage alcoholization time. According to incomplete statistics, about 80 million tons (1 load=50kg) of flue-cured tobacco leaves need to be stored in my country every year. [0003] However, beca...

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Problems solved by technology

This method has at least the following four defects: first, there are huge potential safety hazards. If aluminum phosphide meets open water, it will react violently and burn, and in severe cases, it will cause an explosion; second, it is a highly toxic substance, which can easily cause personnel poisoning. pollution and other issues; third, it has strong metal corrosion, which is easy to cause corrosion of storage equipment and various probes; fourth, the resistance of pests has been increasing over the years, resulting in incomplete insecticide and difficult to kill insect eggs, etc.

When the oxygen is connected to the outside air by cutting the cut or opening the oxygen regulating valve, the remaining atmosphere regulator in the ash stack will react with the oxygen in the outside air entering the ash stack again. On the one hand, it causes The resource waste of the atmosphere regulator, on the one hand, after the atmosphere regulator reacts with oxygen and generates heat, additional water vapor will diffuse to the inside of the stack, increasing the relative humidity in the stack, and increasing the risk of moisture absorption and mildew of the tobacco leaves. Because the remaining atmosphere control agent can continuously consume the oxygen in the air entering the tobacco stack, the oxygen concentration fluctuates violently in the early stage of oxygen recovery, which consumes a lot of labor and is not conducive to the stability of the quality of the tobacco leaves;

[0007] (2) When oxygen is picked up by cutting or opening the oxygen regulating valve, it is particularly easy to bring the external moisture, insect source and mold outside the stack into the inside of the stack, causing the risk of moisture absorption, insects and mildew in the tobacco leaves. ;In addition, if the size of the notch or the caliber of the oxygen regulating valve is too small, the oxygen recovery efficiency inside the ash stack is also difficult to meet the demand due to the slow air convection in the warehouse;

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