Carbon dioxide dilation method for shredded tobacco during flue-cureing tobacco

Abstract

The invention discloses a method for expanding carbon dioxide shredded tobacco for flue-cured tobacco which comprises, steeping the shredded tobacco with liquid carbon dioxide in immersion tank, driving the immersed shredded tobacco pass through the expansion conduits homogeneously with superheated steam, thus the shredded tobacco can be forced to expand. The method by the invention can substantially improve the harmonization property, inherent quality and maximum quality for the chemical compositions.

Description

(1) Technical field: [0001] The invention relates to a shredded tobacco expansion method in the cigarette industry, in particular to a flue-cured tobacco shredded tobacco expansion method using carbon dioxide as an expansion medium. (two) background technology: [0002] In the 1970s, tobacco expansion technology was gradually improved and applied to the cigarette industry. Among them, the technology of using liquid carbon dioxide as the expansion medium is widely used in the cigarette industry because of its relatively simple and safe process and equipment. The tobacco expansion technology using liquid carbon dioxide as the expansion medium consists of a cold section and a hot section. The cold section is to impregnate the shredded tobacco with liquid carbon dioxide in the impregnation tank, and complete the carbon dioxide cycle treatment; the hot section is to drive the impregnated shredded tobacco through the expansion pipe evenly through the superheated steam, and the ca...

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Problems solved by technology

[0003] The main problems existing in the prior art are as follows: 1. Due to the lack of systematic research and analysis on the chemical components before and after the expansion of different tobacco leaves, flavor substances, each cigarette company has a large blindness and a lack of awareness in the selection of tobacco leaf raw materials for carbon dioxide shredded tobacco expansion. Arbitrary, resulting in a significant decline in the internal quality of shredded tobacco after expansion compared with that before expansion, which is reflected in the greater loss of tobacco-specific aroma, increased coke gas, and increased dryness of smoke during smoking, etc., resulting in The use value of tobacco leaves is reduced

2. At present, the main purpose of setting the technological conditions for tobacco expansion is to pursue a higher tobacco expansion rate. For example, the impregnation time of tobacco in liquid carbon dioxide is longer to increase the carbon dioxide content in the impregnated tobacco; the impregnated tobacco Expansion at a temperature as high as 350-380°C, etc., is also one of the reasons for the decline in the quality and use value of shredded tobacco after expansion.

[0004] Due to the above-mentioned problems, on the one hand, the use ratio of expanded shredded tobacco in cigarette formulations is limited (the average proportion of expanded shredded tobacco used in domestic cigarette formulations is lower than 10%), especially in high-grade cigarettes; on the other hand, due to After expansion, the resistance to crushing of shredded tobacco decreases, and the loss during online processing increases

As a result, this technology has failed to play a corresponding role in cigarette tar reduction, harm reduction, and consumption reduction, and the economic and social benefits have not been fully utilized

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