Method for drying leaf-silk in a grading way and equipment thereof

Abstract

The invention provides a processing method for drying leaf-silk in a grading way and equipment thereof; the method comprises two process steps: a first stage is a fluidization drying stage and the hot air drying temperature is controlled at 110 DEG C to 160 DEG C, so as to lead leaf silks to be dehydrated to 15 percent rapidly; a second stage is a roller silk drying stage, the temperature of roller wall is controlled at 60 DEG C to 100 DEG C, and the leaf silks with 15 percent of water content is dried to about 12 percent; the equipment comprises a fluidization drying functional area and a roller silk drying functional area; the fluidization drying functional area comprises a vibration fluidized bed and a wind-collecting guide cover arranged above the vibration fluidized bed; the roller silk drying functional area comprises a silk drying roller, the material inlet of the silk drying roller is communicated with a vibration tank. The invention can effectively utilize different drying characteristics of leaf silks in the constant-speed drying stage and speed-reduction drying stage, so as to improve the filling value of the leaf silks on the premise of not improving the processing temperature of the leak silks; meanwhile, aroma loss of the leaf silks is reduced in the drying process.

Description

Technical field: [0001] The invention relates to a method for drying shredded leaves in the tobacco shredded production process, in particular to a treatment method for drying shredded leaves in stages. [0002] The present invention also relates to a device for realizing the above-mentioned step-by-step drying shredded leaf processing method. Background technique: [0003] Shredded leaf drying is an important process in the tobacco shredded production process. The goal of the shredded leaf drying process is to remove part of the moisture in the shredded leaf, increase the filling value of the shredded leaf, reduce the irritation and miscellaneous gas of the shredded leaf, and improve the odor absorption of the shredded leaf. [0004] There are two main types of shredded shred drying methods at present, tower tube shredded shredded air drying and drum shredded shredded drying. Tower-tube airflow drying of leaf shreds is a process in which the leaf shreds are continuously a...

AI Technical Summary

Problems solved by technology

[0006] 1. The process temperature in the airflow drying step is 80-100°C, which cannot achieve rapid dehydration of high-humidity leaf shreds, so the filling value of the dried leaf shreds is low, and the drying process temperature is reduced to maintain the aroma of leaf shreds. At the expense of reduced silk filling capacity;

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