Dense flue-cured tobacco drum type reversal combustion furnace and use method thereof

Abstract

A dense flue-cured tobacco drum type reversal combustion furnace comprises a furnace top, a drum type bosh, a fire bar and an L-shaped furnace door. An inner cavity of the bosh has the side length of 0.8-1.0 m and the height of 1.2-1.5 m. A coal stacking area is arranged above the fire bar in the bosh, and a static pressure area is arranged below the fire bar in the bosh. No horizontal gaps exist between honeycomb briquette bricks in the coal stacking area, and vertical holes of the honeycomb briquette bricks are aligned. An operation opening the same height as the bosh is formed in the side wall of the bosh. The inner cavity of the bosh is communicated with a drum type inverted operation channel through the operation opening. An extension body at the bottom of the furnace door seals the side wall of the static pressure area. A piece of combusting small soft coal is inserted in the center of the top face of a coal bed. A temperature controller controls a draught fan to be started and stopped. All air evenly enters columnar channels of briquette bricks in a piston flow mode so that complete combustion can happen. Six to seven days of open fire reversal combustion heat supply is completed. In the tobacco curing industry, hot air generated by flue-cured tobacco can be used by the furnace. By means of the furnace, coal loading can be conducted at a time comfortably, CO emission is reduced by 75%, coal is saved by 25%, the furnace can be close to a baking curve to supply heat, the temperature drop and the draught fan burning caused by excessive temperature are avoided, and local honeycomb briquette bricks can be combusted.

Description

technical field [0001] The invention relates to a square-barrel type back-burning furnace for intensive flue-cured tobacco based on the principles of open flame back-burning and automatic furnace temperature control for burning cube-shaped honeycomb briquettes, and a method of using the same, which is suitable for intensive flue-cured tobacco and scattered flue-cured tobacco in the tobacco leaf processing and modulation industry in the agricultural and rural fields. Use in places where leaves are baked to generate hot air. Background technique [0002] According to incomplete statistics, 30% to 40% of tobacco planting bases and tobacco farmers' cooperatives use tunnel furnaces to generate hot air and pass it into the smoking room. The tunnel furnace uses honeycomb briquettes with an inner diameter of 110mm and a height of 75mm. It can be loaded with 800-1000 honeycomb briquettes at one time, which can meet the heating needs of tobacco leaf baking and combustion for 5 to 6 da...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the tunnel furnace that cannot be comfortably loaded with coal at one time, the unreasonable structure and the unreasonable flow heat transfer and combustion process in the furnace, the over-temperature drop and blown fan, the dark fire is burning and the heat radiation loss of the furnace door is large, the invention design It has the structural characteristics of "high and large vertical furnace, coal charging channel and ash cleaning channel combined into one, high operating channel, closed static pressure zone and high L-shaped light furnace door", "open flame reaction Burning, automatic control of furnace temperature, high temperature isolation" technical features, "one-time coal loading and ash removal; comfortable coal loading and ash unloading; coal saving, low CO emission of flue gas; adjustable and controllable hot air temperature, close to the baking process curve for supply Intensive flue-cured tobacco square barrel reverse burning furnace with beneficial effects such as no overheating, no temperature drop, and no fan burning, and its use method

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