Heat recovery device for tobacco leaf baking

Abstract

The invention discloses a heat recovery device for tobacco leaf baking. The heat recovery device comprises a heat recovery device body, the heat recovery device body comprises a heat recovery main shell and heat recovery auxiliary shells, the heat recovery auxiliary shells are fixedly installed on the two sides of the heat recovery main shell in an inclined state, and the heat recovery main shell and the heat recovery auxiliary shells are arranged to be of a rectangular channel structure; heat recovery cores are installed in the heat recovery main shell and the heat recovery auxiliary shells, the upper sides and the lower sides of the heat recovery cores penetrate through the heat recovery main shell and the heat recovery auxiliary shells, the heat recovery cores comprise rectangular frames, and a plurality of supporting plates are installed in the rectangular frames. According to the heat recovery cores, supporting plates are reasonably arranged at intervals, the number of inner supports is small, on-way resistance is small, wind pressure loss is small, the maximization of the heat transfer area is guaranteed, and therefore the maximum heat exchange efficiency is achieved, and when heat passes through the heat recovery cores, the heat flows out from the upper side and the lower side along the supporting plates, and the heat flowing out from the upper side and the lower side is secondarily utilized.

Description

technical field [0001] The invention belongs to the technical field of heat recovery, and in particular relates to a heat recovery device for baking tobacco leaves. Background technique [0002] Tobacco leaves are the main raw material of cigarettes. The quality of tobacco leaf curing is directly related to the quality of cigarettes. Therefore, tobacco leaf curing is one of the most important links in tobacco production. The basic principle of flue-cured tobacco is to use hot air to heat the tobacco leaves, so that the moisture in the tobacco leaves (the moisture content of mature tobacco leaves is about 85%) is discharged. Traditional tobacco leaf curing uses coal as fuel, and the heat generated by coal combustion roasts tobacco leaves. As coal is a non-renewable energy source, endless mining will cause its rapid depletion. At the same time, coal combustion will produce a large amount of carbon dioxide, sulfur dioxide, etc. Harmful gas, and sulfur dioxide remains in the t...

AI Technical Summary

Problems solved by technology

Traditional tobacco leaf curing uses coal as fuel, and the heat generated by coal combustion roasts tobacco leaves. As coal is a non-renewable energy source, endless mining will cause its rapid depletion. At the same time, coal combustion will produce a large amount of carbon dioxide, sulfur dioxide, etc. Harmful gas, and sulfur dioxide remains in the tobacco leaves, which seriously affects the quality of tobacco leaves; at the same time, the emission of carbon dioxide and sulfur dioxide gas seriously affects people's health. Carbon-air energy tobacco leaf special baking room, including room body, roof, air inlet channel and air energy roaster, the bottom of the room body is equipped with a ground heat insulation layer, the top of the room body is equipped with a roof, and the upper part of the room body There is an overhead ventilation layer. There are three groups of three-layer hangers for curing tobacco leaves in the middle and lower spaces of the room. There are doors for materials in and out on the front of the room, and a door on the back of the room. Air energy roaster, on the top plate of the roaster, there is an air inlet passage for air energy, which communicates with the overhead ventilation layer set on the upper part of the room through the downwind hood

The special tobacco baking room uses air energy instead of coal, and at the same time the heat is recycled and utilized, which has the advantages of environmental protection, energy saving, time-saving and labor-saving, etc., but the professional tobacco baking room still has the following disadvantages: the flow resistance is large and the heat energy is not recovered for secondary use

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