CO2 flow extraction process for reducing tar and harmful components of tobacco

Abstract

The invention belongs to the technical field of tar and harmful component reduction of tobacco, and particularly relates to a CO2 flow extraction process for reducing tar and harmful components of tobacco. The process comprises the following steps of: performing liquid-state CO2 flow extraction; before extraction, performing microwave treatment on low-quality tobacco; and after extraction, performing solid-liquid separation to obtain the tobacco and drying to obtain a target product. Meanwhile, an extracted substance can be used as a raw material or a chemical material for manufacturing tobacco sheets by using a papermaking method after being treated. The process has the advantages of simplicity, safe used extraction agent, no need of refitting extraction equipment, low cost, environmental friendliness, economy and better tar and harmful component reduction effect of the treated tobacco.

Description

technical field [0001] The invention belongs to the technical field of tobacco harm reduction and tar reduction, in particular to a CO 2 Flow extraction process. Background technique [0002] There are four main types of existing cigarette harm and coke reduction methods: one is to achieve the purpose of reducing harm and coke by increasing the air permeability of the paper and filter, increasing the filtration efficiency of the filter or performing selective adsorption; The second is to increase the filling value of cigarettes by adding tobacco flakes, expanded shredded tobacco, expanded stems, etc., and reduce the amount of cigarettes consumed by a single cigarette to achieve the purpose of reducing harm and reducing tar; the third is to reduce harm and reduce tar by applying specific material liquids The fourth is to treat the tobacco through a special process, so that the harmful substances produced when the treated tobacco is burned and smoked can be reduced to achieve...

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of this method is that it reduces the aroma of the cigarette while reducing the tar and harm, and reduces the satisfaction when smoking the cigarette.

The second type of method also solves a part of the problem, but because the manufacturing cost of tobacco sheet and expanded cut tobacco is relatively large, and the ability of reducing the coke of expanded tobacco and expanded cut stem is relatively poor, and tobacco sheet and expanded tobacco, cut cut stem will give cigarettes the same effect. have a certain negative impact on the sensory quality of cigarettes, so their use ratio in cigarettes is limited, and their contribution to the harm reduction and tar reduction of cigarettes is not prominent

The third type of method has no obvious effect on tar reduction and harm reduction, and will have a negative impact on the sensory quality of cigarettes, and at the same time, there is a potential hazard to human health

The fourth type of method can achieve the goal very well. In CN102090710A, because the selected extraction agents are all flammable and explosive substances, and require high pressure, there are many potential safety hazards, and the extraction operation process of tobacco in this process There is little change with the existing technology. If the tobacco can be pretreated to improve the extraction efficiency, the extraction effect of harmful substances in tobacco can be better improved, and the effect of reducing harm and tar in tobacco will be more ideal.

In CN102640985A, use CO 2 As an extractant for supercritical extraction of tobacco harm and coke reduction, the process extracts tobacco first, and then performs microwave treatment. The microwave treatment process achieves the effect of drying tobacco and maintaining the quality of tobacco aroma, but it cannot Contribute to improving the extraction efficiency of harmful substances in tobacco

Moreover, in order to achieve a better extraction effect in this patent, a rotatable and rotating cage device is added to the extraction kettle, which increases the equipment cost and improves the extraction efficiency, but the effect is still unsatisfactory.

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