Method and equipment for removing local moisture of boxed tobacco strips

Abstract

The invention relates to a method and equipment for removing local moisture of boxed lamina. The method for removing the local moisture of the boxed lamina comprises the following steps: 1) preheating dry hot air; 2) starting radio frequency heating and simultaneously using dry hot air for auxiliary heating until a heating target temperature is reached; 3) vacuumizing the cavity, and keeping for a first preset time after the target vacuum degree is reached; 4) recovering normal pressure; 5) starting the radio frequency heating again, performing auxiliary heating by using the dry hot air, keeping for a second preset time, stopping introducing the dry hot air and stopping the radio frequency heating when a preset heating frequency is reached, otherwise, returning to the step 3); 6) vacuumizing the cavity, and keeping the condition for a third preset time after the target vacuum degree is reached; and 7) introducing dry cold air for a fourth preset time, and if the temperature is reduced to the target end temperature, ending the process, otherwise, returning to the step 6). According to the invention, the purposes of rapidly removing moisture in a local area of the boxed tobacco lamina and effectively avoiding adverse effects on the quality of the tobacco lamina in an undamped area in the box can be achieved.

Description

technical field [0001] The invention relates to the technical field of drying agricultural products, in particular to a method and equipment for removing local moisture in box-packed tobacco. Background technique [0002] As a raw material for the tobacco industry, box-packed tobacco will absorb water and become damp during the alcoholization and fermentation process and become moldy. The loss ranges from lower grades of tobacco leaves to severe damage to the complete unusability of tobacco leaves. After the cigarette is moldy, its contents decompose rapidly, the normal structure and contents are destroyed, the appearance is darkened, the original aroma disappears, a strong musty smell is emitted, the smell deteriorates seriously, and the irritation increases. Large, bitter and dry when inhaled, unable to enter the throat, while the toughness and elasticity are greatly reduced. When the mildew is severe, it will completely turn into black stained and foul-smelling rot, losin...

AI Technical Summary

Problems solved by technology

[0002] As a raw material for the tobacco industry, box-packed tobacco will absorb water and become damp during the alcoholization and fermentation process and become moldy. The loss will reduce the grade of tobacco leaves in the slightest, and cause the tobacco leaves to be completely unusable.

After the cigarette is moldy, its contents decompose rapidly, the normal structure and contents are destroyed, the appearance is darkened, the original aroma disappears, and a strong smell of moldy acid is emitted, the taste deteriorates seriously, and the irritation increases Large, bitter and dry when inhaled, unable to enter the throat, and at the same time the toughness and elasticity are greatly reduced. When the mildew is severe, it will completely turn into black stained and foul-smelling rot, losing its use value

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