Pretreatment technology for reducing carbonization of tobacco stems after being expanded by microwave

Abstract

The invention relates to a pretreatment technology for reducing carbonization of tobacco stems after being expanded by microwave, and belongs to the technical field of tobacco processing. The pretreatment technology for reducing carbonization of tobacco stems after being expanded by microwave is the improvement on basis of prior art. The pretreatment technology for reducing carbonization of tobacco stems after being expanded by microwave provided by the invention comprises the following steps: preparing tobacco stems, primary feeding, screening, slitting, air-conveying, secondary feeding, warming and wetting, and expanding by microwave. The pretreatment technology for reducing carbonization of tobacco stems after being expanded by microwave has the advantages that, the production flow is controlled by quantitatively feeding, and obvious effect is provided for keeping stable quality of each process; when the tobacco stems are in the warming and wetting process, the tobacco stem slitting technology is used for enabling moisture and temperature of the core parts, cambiums and cortexes of the tobacco stems to be more uniform, and the carbonization of the core part in the microwave expansion process due to that the core part has more moisture and lower heat radiating effect than the surface is reduced. The method provided by the invention is significant in improving cut stem quality and use ratio, and reducing the cost of cigarette enterprises.

Description

Technical field:

[0001] The invention relates to a pretreatment process for reducing carbonization of tobacco stems after microwave expansion, and belongs to the technical field of tobacco processing. Background technique:

[0002] Tobacco stems are an important part of tobacco leaves. At present, expanded tobacco stems have been widely used in the production of cigarettes. Expanded tobacco stems can effectively reduce the carbon monoxide and tar produced when cigarettes are burned and smoked, and have a certain effect of reducing harm and tar. After puffing, the miscellaneous gas of the tobacco stems is significantly reduced, and the smoking quality is improved. Tobacco stems contain polar water molecules, which have dielectric properties that strongly absorb microwaves. When heated by microwave radiation, they collide and rub violently with microwave frequencies to generate a large amount of heat, thereby causing water to evaporate rapidly and generate vapor pressure. Pre...

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