Bulk tobacco curing reverse-combustion hot-blast furnace and application method thereof

Abstract

The invention provides a bulk tobacco curing reverse-combustion hot-blast furnace. The bulk tobacco curing reverse-combustion hot-blast furnace comprises a furnace top, a bosh, a furnace grate, an inner furnace door and an outer furnace door; the height of an inner cavity of the drum-shaped bosh is 1.2m to 1.5m and the inner diameter of the inner cavity is 0.9m to 1.1m; the furnace grate is horizontally fixed at the height of 0.2m to 0.35m; a coal piling region is arranged above the furnace grate and a static pressure region is arranged below the furnace grate; an operation opening, which is as high as a side wall of the bosh and is 0.6m to 0.8m wide, is formed in the side wall of the bosh; the bosh is communicated with a reversed operation channel through the operation opening; the inner furnace door is used for sealing a notch in the side wall of the static pressure region and the outer furnace door is used for sealing a right end opening of the operation channel; an auxiliary ventilation hole is formed in the outer furnace door. Combusted small bituminous coal blocks are charged into the center of a top surface of a coal bed and all air enters a combustion surface in a piston flow shape to a combustion surface for complete combustion; the bituminous coal blocks are reversely combusted in open fire and heat is supplied for 6 to 7 days. A tobacco curing hot-blast furnace of a tobacco curing industry can utilize the bulk tobacco curing reverse-combustion hot-blast furnace. The coal can be comfortably charged in one step; the CO emission is reduced by 75 percent the coal is saved by 25 percent; the heat is supplied in a manner of clinging to a curing curve; temperature falling, over-temperature and a draught fan being burnt cannot occur and local honeycomb briquette balls can be combusted.

Description

technical field [0001] The invention relates to an intensive flue-cured tobacco back-firing hot blast stove based on the open-flame back-firing principle of honeycomb anthracite balls and a method of using the same, which are suitable for use in places where hot air is generated by intensive flue-cured tobacco combustion in the tobacco leaf processing and modulation industry in the agricultural and rural fields. Background technique [0002] According to incomplete statistics, in 2012, the national tobacco planting area reached about 21 million mu. According to an estimate of 15-20 mu per block, there are about 1.2 million intensive flue-cured tobacco houses in the country. Taking 2.5 tons of tobacco leaves in the middle of a room (dry weather) as an example, the time before and after the combustion and heat supply to generate hot air lasted for 5 to 6 days. These intensive flue-curing room hot blast stoves are highly efficient, energy-saving and environmentally friendly, wi...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of dark fire burning in the scattered coal furnace and the large loss of heat radiation from the furnace door, it is necessary to watch the fire frequently, add coal and remove ash, and poor safety and sanitation conditions. Burning and the heat radiation loss of the furnace door is large, and the comfort of coal charging operation is poor. Invented and designed a "high and large vertical furnace, coal charging channel and ash cleaning channel combined into one, high operating channel, short Structural features of unique inner furnace door, closed static pressure area and high outer furnace door, technical features of "open flame reverse burning, automatic control of furnace temperature, high temperature isolation", "one-time coal loading and ash removal; coal loading and ash unloading is comfortable; Coal-saving, low CO emission of flue gas; adjustable and controllable hot air temperature, heat supply close to the baking process curve, no temperature drop and overheating; no fan burning" and other beneficial effects of intensive flue-cured tobacco back-burning hot air stove and its use method

Images