Tobacco material pneumatic drying process and equipment

A tobacco material, airflow drying technology, applied in the fields of tobacco, tobacco preparation, food science, etc., to achieve the effect of prolonging the drying time, shortening the drying path, and good compatibility
CN101601500BActive Publication Date: 2012-09-05ZHISI HLDG GRP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHISI HLDG GRP
Publication Date
2012-09-05

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Abstract

The invention provides a pneumatic drying method and equipment thereof for realizing large-flow tobacco material puffing drying treatment; the method comprises the following steps: puffed tobacco material is conveyed to a drying pipe for being dried by hot air flows, and then the tobacco material is separated from hot sir; the drying pipe is composed of a horizontal drying pipe and a vertical drying pipe of which the cross section is more than the cross section of the horizontal drying pipe; hot air with the temperature at 100-250 DEG C and air flow speed of10-50m / s of is sent in the horizontal drying pipe, wherein the air flow feeding direction is vertical to the material feeding direction; the material driven by hot air flows enters in the vertical drying pipe and is ascended in a suspension way, and the ascending speed of the material is reduced to 0.5-5m / s; meanwhile, sundries such as slivers with large density in the material can not be suspended and are separated pneumatically under the wind speed. By arranging the vertical drying pipe with large caliber, the speed of the material, moving upwards along the air flow direction, is reduced, on the premise of not increasing the drying route, the drying time of the material is prolonged, heat-transferring and mass transferring coefficient is improved, and the drying time of the material is improved.
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Description

technical field

[0001] The invention belongs to the technical field of tobacco processing, and relates to a process for drying tobacco materials by utilizing high-temperature airflow and equipment for realizing the process. Background technique

[0002] The airflow drying process has the advantages of high drying intensity, short drying time, large processing capacity, high thermal efficiency, simple structure of the airflow drying tube, and easy maintenance. Because of the above advantages of airflow drying, airflow drying has a wide range of applications in chemical, food, pharmaceutical and other industries.

[0003] At present, the puffing and drying modes of cut stems commonly used in the domestic tobacco processing industry mainly include: 1. HT plus drying cut stems cylinder; 2. COMAS cut stem puffing tower; 3. Flash grafted cut stem puffing tower; 4. Flash steaming plus flow Fluidized bed; 5. HT plus fluidized bed; 6. COMAS tunnel drying stem dryer and other modes. ...

Claims

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