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Method expanding tobacco stems by utilizing microwave of gas heat medium

A technology of microwave expansion and gas, which is applied in the field of tobacco processing, can solve the problems affecting the usability of tobacco stems, and achieve the effects of avoiding surface coking, safe use of equipment, and constant and uniform temperature

Active Publication Date: 2014-03-12
姚波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned tobacco stem expansion methods all have certain shortcomings, which seriously affect the usability of the tobacco stem.

Method used

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  • Method expanding tobacco stems by utilizing microwave of gas heat medium
  • Method expanding tobacco stems by utilizing microwave of gas heat medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Heating nitrogen to 300°C, opening the gas pipeline 11, the gas heat medium enters the microwave heating chamber 1 from the upper part of the microwave heating chamber 1 and perpendicular to the direction of the material conveying mesh belt 3, and passes through the bottom of the microwave heating chamber 1 The through hole 16 enters the gas recovery pipeline 11, and is used for circulation heating after treatment; when the temperature in the microwave heating chamber 1 reaches the temperature of the gas heat medium, the removed tobacco stems are continuously sent into the microwave heating chamber 1 by the material conveying mesh belt 3, Turn on the microwave with a frequency of 2450MHz and a power of 10kW. After the tobacco stem is double-heated by microwave and gas heat medium (both inside and outside) for 30 seconds, the volume increases and expands. The expanded tobacco stem is continuously sent out by the material conveying mesh belt 3 for microwave heati...

Embodiment 2

[0039] Embodiment 2: Heating carbon dioxide gas to 90°C, opening the gas pipeline 11, the gas heat medium enters the microwave heating chamber 1 from the upper part of the microwave heating chamber 1 and perpendicular to the direction of the material conveying mesh belt 3, and passes through the bottom of the microwave heating chamber 1 The through hole 16 in the gas recovery pipeline 11 enters the gas recovery pipeline 11, and is used for cyclic heating after treatment; when the temperature in the microwave heating chamber 1 reaches the temperature of the gas heat medium, the removed tobacco stems are continuously sent into the microwave heating chamber 1 by the material conveying mesh belt 3 , turn on the microwave with a frequency of 915MHz and a power of 400kW. After the tobacco stem is double-heated by microwave and gas heat medium (both inside and outside) for 150 seconds, the volume increases and expands. The expanded tobacco stem is continuously sent out by the material ...

Embodiment 3

[0040]Embodiment 3: Heat the superheated steam to 150°C, open the gas pipeline 11, and the gas heat medium enters the microwave heating chamber 1 from the upper part of the microwave heating chamber 1 and perpendicular to the direction of the material conveying mesh belt 3, and passes through the bottom of the microwave heating chamber 1 The through hole 16 in the gas recovery pipeline 11 enters the gas recovery pipeline 11, and is used for cyclic heating after treatment; when the temperature in the microwave heating chamber 1 reaches the temperature of the gas heat medium, the removed tobacco stems are continuously sent into the microwave heating chamber 1 by the material conveying mesh belt 3 , turn on the microwave with a frequency of 915MHz and a power of 200kW. After the tobacco stem is double-heated by the microwave and the gas heat medium (both inside and outside) for 600 seconds, the volume increases and expands. The expanded tobacco stem is continuously sent out by the ...

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PUM

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Abstract

The invention relates to a method for expanding tobacco stems by utilizing microwave of a gas heat medium, which belongs to the technical field of tobacco processing. The method comprises the steps of: continuously sending a gas heat medium heated to 90 to 300 DEG C into a microwave heating cabin, then continuously sending tobacco stems in which impurities are removed into the microwave heating cabin, simultaneously feeding microwave energy into the microwave heating cabin, heating for 30-600s, discharging the tobacco stems with expanded size from the microwave heating cabin, and then continuously heating by the gas heat medium for 10 to 50s until the tissue fibers of the tobacco stems are hardened and formed to obtain an expanded tobacco stem product. In the whole process for heating and expanding the tobacco stems by utilizing the microwave, the gas heat medium is adopted to continuously heat the surfaces of the tobacco stems, and the tobacco stems are heated by the gas heat medium from outside to inside while heated by the microwave energy from inside to outside, so that the output power of the microwave can be effectively reduced, and a breakdown phenomenon of a microwave electric field can be prevented; and the expanded tobacco stems produced through the method have advantages of high expansion rate, large expansion degree, uneasiness in retraction and the like.

Description

technical field [0001] The invention relates to a treatment method for expanding tobacco stems, in particular to a method for expanding tobacco stems by using gas heat medium and microwave energy, and belongs to the technical field of tobacco processing. Background technique [0002] Tobacco stems account for about 20% of the total weight of tobacco leaves, and their chemical composition is basically the same as that of leaves, but the content is less than that of leaves. Tobacco stems are made into shredded stems, with low filling value, insufficient aroma, poor irritation and strength, and heavy miscellaneous woodiness. Research and practice have shown that expanded tobacco stems can overcome the above shortcomings, and can be added to cigarette products in a large proportion to enrich cigarette varieties and increase cigarette production. [0003] At present, various enterprises and scientific research institutes at home and abroad have conducted a lot of research on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B5/16
Inventor 周川刘朝辉刘毅康琪游俊姚波周昆
Owner 姚波