Technique for pretreating cabo

Abstract

A technology for pre-processing the stems of tobacco leaves includes heating the low-loss granular solid microwave medium as thermal medium to 100-200 deg.c, mixing said stems with said thermal medium, heating in microwaven over for puffing the stems, and separating the tobacco stems from thermal medium. The pre-processed stems feature high loseness and elasticity, and good smell.

Description

Technical field: [0001] The invention relates to a tobacco preparation process, in particular to a pretreatment process for tobacco stems processed by microwave after mixing tobacco stems with microwave low-loss solid medium particle heat medium. technical background: [0002] Regarding the pretreatment of tobacco stems, the relevant method and equipment disclosed in CN 154218A, its essence is to replace the steamed stems in the traditional treatment process with the stem washing process, which is just a new transformation of the traditional process. It is difficult to improve the quality of aspects such as aroma. [0003] In foreign countries, in the pretreatment to improve the quality of tobacco stems, there is a method of using hydraulic pressure to change the texture of tobacco stems in tobacco. This method has been disclosed in US Patent 2344106 (1944.3.41). However, this method is difficult to operate in practice, and pressure devices and steam are required to prepar...

AI Technical Summary

Problems solved by technology

Although this process can improve the quality of tobacco stems by increasing the volume and reducing the density, according to its technological requirements: the longitudinal axis of the tobacco stems on the conveyor belt must be parallel to the direction of energy source transmission and cannot be changed. Good processing effects can be obtained in this specific direction, which is quite difficult in actual engineering implementation

In addition, the process needs to have a large microwave energy density in the processing space during actual implementation, but due to the inevitability of the uneven microwave field in the space, standing waves with extremely high energy density will be formed, and sparks or tobacco stems will often occur during operation. The interior is burnt, and once sparking occurs, the microwave input must be stopped and the burning tobacco stems sent out of the microwave equipment before being put into production again

Charred tobacco stems can no longer be used as raw material for tobacco production, and the tobacco stems on the transfer belt are not microwaved during the stop period, resulting in a decrease in product quality

Moreover, the cost of integrating high-power microwave equipment is very high when realizing mass production, and it is more prone to frequent ignition

These are unacceptable in actual production

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