Treatment process for expanded tobacco stems

Abstract

The invention relates to a treatment process for expanded tobacco stems, and belongs to the technical field of main material and auxiliary material processing in the tobacco industry. The microwave expanded tobacco stems are classified according to the thickness and / or the length, the expanded tobacco stems are placed into a pressure vessel, nitrogen with the purity being larger than 78% is connected into the pressure vessel, the tobacco stems and the nitrogen are evenly mixed, the pressure in the vessel is normal pressure to 8 MPa, the pressure is kept for 10 seconds to 40 minutes, the nitrogen in the pressure vessel is exhausted, the nitrogen can be recycled after purification and compressing treatment, the expanded tobacco stems after treatment are taken out, and the expanded tobacco stems are boxed or bagged in a classified mode for standby application; or moisture regain is conducted directly, so that products such as stem shreds, stem strip shreds and stem particles are manufactured. The microwave expanded tobacco stems treated through the process do not need to be stored any more, wooden odors and offensive odors in the tobacco stems are reduced, the tobacco stems cannot retract after moisture regain, and good elasticity and processing resistance are achieved. By means of the treatment process for the expanded tobacco stems, the requirement for the conditions such as warehouse space, manpower and logistics in the storage link is met, and therefore enterprise cost is greatly lowered.

Description

technical field [0001] The invention relates to a processing method for expanded tobacco stems, in particular to a processing technology for expanded tobacco stems prepared by microwave heating, and belongs to the technical field of processing main and auxiliary materials in the tobacco industry. Background technique [0002] Tobacco stem is an important additive in the modern tobacco industry, accounting for about 25% of the total weight of tobacco leaves. Because its chemical composition is basically the same as that of sheet tobacco, it is usually made into cut stems, flakes, etc. as tobacco additives. However, the content of effective substances in tobacco stems is less than that of sliced ​​cigarettes, which is less irritating and vigorous; the woody gas and miscellaneous gas are heavy, which will affect the original style and taste of cigarettes, and are usually only added to low-end cigarettes. [0003] Chinese patent CN1518906 discloses a pretreatment process for tob...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a treatment process for expanded tobacco stems to solve the problem that microwave expanded tobacco stems need to be stored for 1 to 3 months and achieve the reduction of woody gas and miscellaneous gases.

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