Five-drying-area mesh belt direct drying and redrying process

Abstract

The invention relates to a five-drying-area mesh belt type direct drying and redrying process. The process comprises the following steps: respectively setting an original working temperature of a first drying area, an original working temperature of a second drying area, an original working temperature of a third drying area, an original working temperature of a fourth drying area and an originalworking temperature of a fifth drying area; closing a first moisture regaining area, a second moisture regaining area and a third moisture regaining area; and according to a five-drying-area cooling model, determining that the first-drying-area working temperature and the fifth-drying-area working temperature are reduced by a preset ratio, and the second-drying-area working temperature, the third-drying-area working temperature and the fourth-drying-area working temperature are reduced to a preset ratio. The five-drying-area cooling model is adopted, redrying control parameters of five-drying-area mesh belt type direct drying and re-drying equipment are obtained, according to the redrying control parameters, the moisture content of the redried tobacco sheets is within a specified range under the condition that the moisture regaining area is directly closed, the process is suitable for all five-drying-area mesh belt type direct drying and redrying equipment, and the universality of theprocess is improved.

Description

technical field [0001] The invention belongs to the technical field of tobacco redrying process, in particular to a mesh belt direct drying redrying process with five drying zones. Background technique [0002] Leaf threshing and redrying is an important process to separate tobacco leaves from stems. The main technological task of leaf threshing is to separate leaf stems, while redrying uses separated leaves that are uniform and in a safe range. The moisture requirement of smoke is 11%-13%. [0003] The rebaking section of the leaf threshing and rebaking line is mostly mesh-belt-type segmented rebaking equipment, which is composed of a drying area and a moisture regaining area. In the rebaking equipment of the rebaking factory, according to the drying zone, it is divided into four drying zone rebaking equipment, corresponding to two moisture resurgence zones; five drying zone rebaking equipment, corresponding to three moisture resurgence zones; six drying zone rebaking equi...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a mesh-belt type direct drying and re-baking process with five drying zones, which can solve the problem that the low-temperature re-baking and tobacco leaf moisture content in the prior art cannot be effectively unified without changing the existing equipment.

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