Dry method of cigarette tobacco

A drying method and technology of cigarette leaves, applied in tobacco, tobacco preparation, application, etc., can solve the problems of difficult control of the drying end point, large fluctuations in moisture content and temperature of shredded leaves, and short processing time

Active Publication Date: 2014-11-12
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is air drying or drum drying, there are the following disadvantages: First, the process temperature is relatively high, generally must be greater than 130 ° C, in order to make the moisture content of the leaf silk with a moisture content of 18% to 25% reach about 12.5%, to meet Subsequent processing requirements, but generally speaking, when the process temperature is higher than 100°C, the aroma of dried leaves will be significantly reduced, and the amount of aroma will also be significantly reduced; the second is air drying and drum drying, which cannot be solved at the same time. Reducing the contradiction between moisture content, temperature fluctuation and improving the filling capacity of shredded leaves. For example, air dr...

Method used

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  • Dry method of cigarette tobacco

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 600kg leaf shreds, balance the water content to 22%, and send it to the freezing equipment for pre-freezing through the vibrating tank. The temperature in the pre-freezing zone is controlled at -30°C, so that the surface temperature of the leaf shreds reaches -20°C and keeps for 5 minutes, and the water content is 18. %. The pre-frozen leaf shreds are sent to the heating and drying equipment through the material belt. In the first stage, the frozen leaf shreds are dried at 60°C for 10 minutes; in the second stage, the leaf shreds are dried to the surface temperature of the leaf shreds at a temperature of 50°C. Reach 45°C; in the third stage, dry at a temperature of 40°C for 7 minutes, and the moisture content of the leaf silk is 12.5%. Take out the shredded leaves and prepare to enter the next step.

[0012] The shredded leaves treated in Example 1 were compared with air drying and drum drying in the prior art respectively. The moisture content is shown in attached tab...

Embodiment 2

[0014] The shredded leaf is kept at -25°C for 10 minutes after the surface temperature of the shredded leaf reaches -15°C. The pre-frozen leaf shreds are sent to the heating and drying equipment through the material belt. In the first stage, the frozen leaf shreds are dried at 50°C for 10 minutes; in the second stage, the leaf shreds are dried to the surface temperature of the leaf shreds at a temperature of 45°C. Reach 42°C; in the third stage, dry at a temperature of 40°C for 10 minutes, and the moisture content of the leaf silk is 12.8%. Take out the shredded leaves and prepare to enter the next step.

Embodiment 3

[0016] The leaf shreds are kept at low temperature for 10 minutes after the surface temperature of the leaf shreds reaches -10°C. The pre-frozen leaf shreds are sent to the heating and drying equipment through the material belt. In the first stage, the frozen leaf shreds are dried at 70°C for 5 minutes; in the second stage, the leaf shreds are dried to the surface temperature of the leaf shreds at a temperature of 55°C. Reach 48°C; in the third stage, dry at a temperature of 50°C for 5 minutes, and the moisture content of the leaf silk is 12.5%. Take out the shredded leaves and prepare to enter the next step.

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Abstract

The invention discloses a dry method of a cigarette tobacco. The dry method of the cigarette tobacco comprises two steps of prefreezing and drying. The prefreezing comprises the following steps: arranging the tobacco in a low temperature environment, and enabling the surface temperature of the tobacco to reach minus 10 to minus 20 DEG C and keep 5 to 10 minutes. The drying comprises the following step: drying the prefreezed tobacco in 40 to 70 DEG C to 12.5-12.8 % of moisture content. The drying temperature is far below 100 DEG C, fragrance of the tobacco can be retained to the largest extent, fluctuation of moisture and temperature of the processed tobacco is reduced, filling power of dried tobacco is notably increased, loss of quantity and quality of the fragrance of the tobacco is reduced, meanwhile, analyzing of the drying step is saved, and large loss of bound water is avoided.

Description

technical field [0001] The invention belongs to the technical field of cigarette manufacture, and in particular relates to a method for drying shredded cigarette leaves. Background technique [0002] Drying is an important link in the production process of shredded tobacco leaves. Its main task is to remove the moisture in the tobacco material, improve the filling and processing resistance, improve the taste of the tobacco material, and reduce the irritation and miscellaneous gas. [0003] There are two main methods for drying shredded leaves: one is air-flow drying, which achieves the purpose of drying through the convective heat transfer between high-temperature airflow and shredded leaves; Processing requirements. Whether it is air drying or drum drying, there are the following disadvantages: First, the process temperature is relatively high, generally must be greater than 130 ° C, in order to make the moisture content of the leaf silk with a moisture content of 18% to 2...

Claims

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Application Information

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IPC IPC(8): A24B3/04A24B3/10A24B3/18
Inventor 杨俊鹏周红审陈国平程华覃艳东
Owner HUBEI CHINA TOBACCO IND
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