Gas composition and environmental factor controllable tobacco sealing, storage and maintenance method

Abstract

Disclosed is a gas composition and environmental factor controllable tobacco sealing, storage and maintenance method. The method comprises the first step of sealing, the second step of sealing space airtightness detection, the third step of changing of conditions of gas in a sealing tobacco stack and the fourth step of gas concentration control. The step of gas concentration control comprises the following stages of (41) insect killing and bacteriostasis, namely, the concentration of oxygen in the stack is kept smaller than 2% for 20-30 days, (42) alcoholization, maintenance and storage, namely, after the insect killing and bacteriostasis process, according to alcoholization and maintenance requirements, the tobacco alcoholization speed is reduced, and the concentration of oxygen in the tobacco stack is adjusted and is controlled between 0% and 6%, tobacco alcoholization, maintenance and storage, namely, the concentration of oxygen is controlled between 6% and 12%, normal tobacco alcoholization, namely, the concentration of oxygen is controlled between 12% and 21% and tobacco alcoholization acceleration, namely, the concentration of oxygen is controlled between 21% and 30%; meanwhile, the temperature and the humidity inside the stack can be adjusted according to an attached table 1.

Description

technical field [0001] The invention relates to a method for sealed storage and maintenance of tobacco leaves with controllable gas components and environmental factors. Background technique [0002] At present, the known stack treatment technologies are divided into two categories, one is fumigant treatment; the other is to change the gas composition in the stack. Fumigant treatment is mainly based on phosphine. At present, the main problems of phosphine fumigation are as follows: First, the residual phosphine tail gas diffuses into the air after fumigation and easily causes environmental pollution. 1-2 times of phosphine fumigation, the Southern Cigarette Factory needs to carry out 2-3 times of phosphine fumigation every year, and the average fumigation is 2 times a year. If only 1 million tons of tobacco leaves are fumigated, about 8 tons of aluminum phosphide tablets are needed. Enlarged to the whole country, according to incomplete statistics, it is estimated that more...

AI Technical Summary

Problems solved by technology

Fumigant treatment is mainly based on phosphine. At present, the main problems of phosphine fumigation are as follows: First, the residual phosphine tail gas diffuses into the air after fumigation and easily causes environmental pollution. 1-2 times of phosphine fumigation, the Southern Cigarette Factory needs to carry out 2-3 times of phosphine fumigation every year, and the average fumigation is 2 times a year. If only 1 million tons of tobacco leaves are fumigated, about 8 tons of aluminum phosphide tablets are needed. Enlarged to the whole country, according to incomplete statistics, it is estimated that more than 800 tons of aluminum phosphide will be used every year, and the residual phosphine tail gas will diffuse into the air after fumigation, causing serious environmental pollution; Years of continuous use across the country have resulted in high resistance to pesticides in stored tobacco leaf pests

Third, during the fumigation process, the oxygen concentration and ambient temperature and humidity in the tobacco stack cannot be adjusted. The quality of tobacco leaf alcoholization determines the quality of cigarette products. The tobacco leaf alcoholization process has relatively high requirements for oxygen concentration and ambient temperature and humidity.

Disadvantages of the storage method of air-conditioning agent, first, it causes pollution of tobacco leaves. The main component of air-conditioning agent is reduced iron powder, which will produce ferric oxide after reacting with oxygen. The air-conditioning agent needs a certain degree of air permeability on the product packaging. During transportation, handling and construction, it is easy to leak powder, the packaging is easy to be damaged, and the stored items are easy to be polluted, which will pollute the tobacco leaves

Second, the oxygen concentration cannot be freely controlled. The aging of tobacco leaves is a complex process. Different types (varieties), different origins, and different parts of tobacco leaves have different suitable aging times. The same tobacco leaf is suitable for aging under different environmental conditions. time is different

The tobacco stacks stored under the air-conditioning agent are always in a closed state, and it is impossible to effectively control the oxygen concentration and then control the aging process of the tobacco leaves at any time

Third, the odor and miscellaneous gas in the stack cannot be discharged in time. The method of air conditioning and oxygen reduction will cause negative pressure in the stack, which will cause the peripheral air to enter the stack on the one hand; The odor and miscellaneous gas will be absorbed by the tobacco leaves and affect the quality of the tobacco leaves

The disadvantage of carbon dioxide controlled atmosphere storage method is the high cost

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