Double-furnace double-combustion flue-cured tobacco equipment and process

Abstract

The invention discloses a double-furnace double-combustion flue-cured tobacco equipment. The equipment comprises a flue-cured tobacco chamber and a heating chamber. A combustion furnace is arranged inthe heating chamber, and a material storage unit and a machine body are arranged outside the heating chamber. The combustion furnace comprises a first furnace body and a second furnace body which areconnected in series. The material storage unit comprises a material storage bin and a material conveyor. The machine body comprises a gas distribution station, a combustion-supporting gas distribution box, a draught fan and a combustion-supporting pipeline used for outputting combustion-supporting gas are arranged on the gas distribution station, and the combustion-supporting pipeline is communicated with an igniter on the lower portion of the first furnace body, a combustor, a gas combustor on the lower portion of the second furnace body and a feeding box. The double-furnace type furnace body structure design is adopted, biomass and combustible gas generated in the combustion process of the biomass are subjected to secondary complete combustion, biomass combustion is more sufficient andstable, fuel is saved, and the flue-cured tobacco cost is reduced. The utilization efficiency of agricultural and forestry waste biomass energy is greatly improved, the production cost is reduced, andthe tobacco production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of flue-cured tobacco and combustion furnaces, in particular to an intelligent high-temperature, high-efficiency and energy-saving double-furnace dual-combustion flue-cured tobacco equipment and a process using biomass fuels such as agricultural and forestry waste. Background technique [0002] Tobacco is one of the important economic crops in my country. Tobacco cultivation and product development play an important role in the development of national economy and social production. my country's tobacco planting area and output rank first in the world, and Yunnan, Henan, Shandong, Gansu, Guizhou, Hunan and other provinces have planted tobacco, which is an important flue-cured tobacco production area in my country. Among them, Yunnan, Guizhou, Henan, and Hunan provinces have the largest tobacco planting area and the highest output, accounting for about 60% of the country. The development of the tobacco indust...

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Problems solved by technology

[0004] In addition to the "coal-fired" tobacco leaf baking method, if electricity is used as the heat source for baking, the production cost is relatively high, and in extreme situations such as power outages, it may cause a large number of tobacco leaves to rot in the room, which greatly affects the tobacco leaves. quality

After the country advocated and required the "banning of coal" for flue-cured tobacco, biomass combustion is generally used as the heat source to cure tobacco leaves at present. Most of the equipment is separated, and the calorific value of combustion heating is low.

At the same time, in order to meet the needs of sustainable production of tobacco leaves, a large and stable source of biomass fuel supply is often required, and the processing cost of biomass is relatively high. The market price of general biomass pellets is 1100-1200 yuan / ton, The production cost has increased significantly, and the amount of labor has increased significantly, which is often difficult for tobacco farmers to accept

[0005] In order to further improve the existing biomass heating methods, some researchers have improved and optimized the equipment. Although there have been some improvements in fuel utilization and some devices, they still have not broken through the limitations of traditional biomass combustion heating equipment. There are still obvious deficiencies in the selection of raw material types, fuel thermal energy utilization, heating value, production efficiency, production cost, etc.

Traditional biomass flue-cured tobacco needs to process biomass into biomass particles, which significantly increases the production cost

[0006] Especially in terms of flue-cured tobacco equipment and technology, traditional flue-cured tobacco equipment and technology that use coal or biomass particles as raw materials are mostly horizontal and one-time combustion, with low utilization rate of fuel combustion heat, high coking rate, and burning pollutants. High emission, high energy consumption, not environmentally friendly, poor overall operation efficiency and stability of equipment

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