Tobacco stalk expansion method

A technology of tobacco stems and expanded tobacco stems, which is applied in the fields of vacuum microwave expansion and water-spraying dipping of tobacco stems, can solve problems such as affecting the usability of expanded tobacco stems and failing to achieve the expansion effect, and achieves easy control of the moisture content of tobacco stems and retention of tobacco flavor. Characteristics, the effect of large expansion volume

Inactive Publication Date: 2012-07-18
BEIJING INST OF AEROSPACE TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned tobacco stem expansion method requires too high temperature during the expansion process, and a large amount of oxygen contacts the tobacco stem during the expansion process, resulting in charred and carbonized tobacco stems. However, the same expansion effect cannot be achieved, which seriously affects the usability of the expanded tobacco stems.

Method used

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  • Tobacco stalk expansion method
  • Tobacco stalk expansion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Taking the tobacco stem production line with a processing flow rate of 20kg / h and a raw material moisture content of 7.38% as an example, the tobacco stems first enter the grading equipment for treatment, and then enter the humidification treatment equipment to spray water evenly, and then flow into the tobacco plant with a temperature of 80°C and a pressure of 0.14MPa. The impregnation equipment is dampened for 15 minutes to make the water content reach 19%. The soaked and dampened tobacco stems are sent to the vacuum microwave expansion chamber with a pressure of 0.01MPa and a temperature of 75°C through an insulated conveyor belt with a temperature of 80°C. For every 1kg of rehydrated tobacco stems, the output power is 4.5kw for rapid heating and expansion of the first microwave cavity, and then for every 1kg of rehydrated tobacco stems, the output power is 2.5kw for medium-speed heating and expansion of the microwave cavity, and finally enters for The output power of...

experiment example 2

[0047] Taking the tobacco stem production line with a processing flow rate of 15kg / h and a raw material moisture content of 10.8% as an example, the tobacco stems first enter the grading equipment for treatment, and then enter the humidification treatment equipment to spray water evenly, and then flow into the tobacco plant with a temperature of 75°C and a pressure of 0.16MPa. Conditions The impregnation equipment is dampened for 10 minutes to make the water content reach 25%. The soaked and dampened tobacco stems are sent to the vacuum microwave expansion chamber with a pressure of 0.02MPa and a temperature of 85°C through an insulated conveyor belt with a temperature of 90°C. For every 1kg of rehydrated tobacco stems, the output power is 5.0kw for heating and expansion in the first microwave cavity, and then for every 1kg of rehydrated tobacco stems, the output power is 2.0kw for medium-speed heating and expansion of the microwave cavity, and finally for each The output power...

Embodiment 3

[0049] Taking the tobacco stem production line with a processing flow rate of 25kg / h and a raw material moisture content of 6.5% as an example, the tobacco stems first enter the grading equipment and then enter the humidification treatment equipment to spray water evenly, and then flow into the tobacco stem at a temperature of 90°C and a pressure of 0.185MPa. The impregnation equipment is dampened for 20 minutes to make the water content reach 15%, and the soaked and dampened tobacco stems are sent to the vacuum microwave expansion chamber with a pressure of 0.005MPa and a temperature of 50°C through an insulated conveyor belt with a temperature of 70°C. After rapid heating and expansion of the first microwave cavity with an output power of 6.0kw for every 1kg of rehydrated tobacco stems, it then enters the medium-speed heating and expansion of a microwave cavity with an output power of 1.5kw for every 1kg of rehydrated tobacco stems, and finally enters For every 1kg of moistur...

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Abstract

The invention provides a tobacco stalk expansion method, which comprises the following steps of: grading tobacco stalks, performing impregnation remoistening on the graded tobacco stalks and expanding the tobacco stalks, wherein a microwave heating expansion method is adopted in the expansion of the tobacco stalks; preferably, the microwave heating expansion is performed on the tobacco stalks under a vacuum condition; more preferably, the microwave heating expansion is performed on the tobacco stalks by adopting more than two different kinds of continuous microwave output power under the vacuum condition, wherein the former two kinds of continuous microwave output power are 4.0 to 8.0 kw and 1.5 to 2.5 kw respectively for every kilogram of remoistened tobacco stalks; and the impregnation remoistening comprises the steps of: spraying water onto the tobacco stalks, and performing the impregnation remoistening under the pressure of 0.112 to 0.203 MPa and at the temperature of 50 to 100 DEG C. The expanded tobacco stalk has the characteristics of greater volume that is 1 to 3 times that of the conventional tobacco stalk, uniform expansion, remarkable fragrance, less wood smell, high resilience, the water content of 0.5 to 3 percent, high combustibility, improved intrinsic quality and relatively better smoke characteristic maintenance.

Description

technical field [0001] The invention relates to a method for expanding tobacco stems, in particular to a method for soaking tobacco stems by spraying water and expanding them with vacuum microwaves. Background technique [0002] Tobacco stems are an important part of tobacco leaves, and after separation of stem leaves, tobacco stems accounting for about 25% of the total weight of tobacco leaves can be obtained. Tobacco stems are tough and have the function of transporting nutrients and water during the cultivation and growth of tobacco. Therefore, the chemical components it contains are basically the same as those of leaves, but the effective content is not as good as that of leaves. The specific manifestations are that the cut stems made of tobacco stems have low filling value, insufficient aroma during burning and smoking, flat inhalation taste, low irritation and strength, and heavy miscellaneous gases, especially woody miscellaneous gases. However, if the tobacco stems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B5/16A24B3/04
Inventor 满鸣何常青杨继志任宏杰路兰卿许鸿昊解海鸥宋建军张华李喜
Owner BEIJING INST OF AEROSPACE TESTING TECH
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