Method for drying tobacco shreds

Abstract

The invention relates to a method for drying tobacco shreds, and belongs to the technical field of tobacco processing. The method for drying the tobacco shreds comprises tobacco shred hyper transport (HT) tunnel type heating and humidifying pretreatment, rotary drum drying stage and microwave drying and shaping stage. HT tunnel type heating and humidifying equipment, rotary drum drying equipment and a control system which are adopted by the method are all purchased from the market, wherein microwave drying equipment which is purchased from the market is reconstructed, microwave magnetrons with ultrahigh frequency (2450 megahertz) and monotube miniwatt (1.5 kilowatts) are adopted instead and are controlled in group, and a rotary drum conveying mode is adopted. The method adopts the combination of two drying modes, and the extensive drying and fine drying of the tobacco shreds are sequentially combined; the method has the advantages that the tobacco shreds are dried and expanded uniformly, and have stable quality; the adverse effects which are caused to the aroma and quality of the tobacco shreds during the conventional high-temperature drying process are effectively solved, so that the purposes of improving the quality and increasing the aroma are realized; and the tobacco shreds are stably shaped, and are high in filling value and good in processing resistance.

Description

Technical areas: [0001] The invention relates to a method for drying cut tobacco, in particular to a method for drying cut tobacco in stages, and belongs to the technical field of tobacco processing. Background technique: [0002] In the cigarette production process, the technological task of the drying process of shredded tobacco (including shredded leaves, shredded stems, shredded flakes, etc.) is to remove part of the moisture to meet the processing requirements of subsequent processes, and to improve the filling value and processing resistance of the shredded tobacco. Purpose of sensory quality of cigarettes. At present, there are two main online drying methods of cut tobacco widely used by cigarette companies in my country. One is drum drying. The process temperature must be 130±20℃ to reduce the moisture of cut tobacco from 20%~28% to 12±1%. After drying, the cut tobacco has a better aroma, but the expansion rate is not high and the filling value is low; the other is t...

AI Technical Summary

Problems solved by technology

The problems in this patent are: ①Although the moisture content of cut tobacco is well controlled, it does not solve the problem of low filling value; ②The entire drying process is divided into many stages, and the requirements for heating, measuring, and control equipment are relatively high, and the equipment cost is relatively high. high

However, this method has the following disadvantages: the process temperature in the airflow drying step is 70°C to 100°C, which cannot achieve rapid dehydration of high-humidity leaf silk, and the filling value of dried leaf silk is low, which reduces the drying process temperature to maintain leaf silk The amount of aroma is at the cost of reducing the filling value of shredded leaves

The problem with this method is that the temperature of the hot air in the fluidized drying stage is high, which causes a large loss in the aroma of cut tobacco and affects the sensory quality.

Its shortcomings are: the moisture content of shredded tobacco is greatly reduced in microwave drying, shredded tobacco is brittle, has a high crushing rate, is not resistant to processing, and its automatic control is difficult