Clean coal reverse combustion hot blast stove

Abstract

A clean coal reverse combustion hot blast stove comprises a combustion chamber, fins, a smoke discharging pipe and briquette coal beds. The smoke discharging pipe is vertically arranged, and the massrectangular fins are fully welded and connected to the outer wall face of the smoke discharging pipe. The bottom transverse edges of the fins are fully welded and connected to the outer wall face of the top face of the combustion chamber. The radius of an inner cavity of the combustion chamber ranges from 1.0 m to 1.2 m, and mass rectangular partition plates are vertically arranged in the inner cavity of the combustion chamber. The length of the transverse edges of the partition plates ranges from 0.6 m to 0.7 m, and the inner vertical edges of the partition plates are arranged on the downwardextending face of the inner wall face of the smoke discharging pipe. The distance between the outer vertical edges and the inner cavity side wall face of the combustion chamber ranges from 100 mm to150 mm. The briquette coal beds are stacked in the inner cavity space of the part, between every two adjacent partition plates, of the combustion chamber. The small arc faces of the briquette coal beds are arranged on the downward extending face of the inner wall face of the smoke discharging pipe. The outer vertical edges of the partition plates are arranged on the big arc face, and the combustion chamber inner cavity space defined by the downward extending face of the inner wall face of the smoke discharging pipe is the ignition igniting object stacking area. The clean coal reverse combustion hot blast stove can be used as a dense flue-cured tobacco and loose-leaf flue-cured tobacco hot blast stove in the agriculture country field. According to the clean coal reverse combustion hot blaststove, one-time coal loading is achieved, coal is saved by 25%, hot air can be generated in the manner of getting close to the technology curve, and the temperature of a combustion fan is smaller than 38 DEG C.

Description

technical field [0001] The invention relates to a clean coal reverse combustion hot air stove with technical features such as open flame reverse combustion, high temperature isolation, and precise control of combustion and heating by starting and stopping of a combustion-supporting fan. device used. Background technique [0002] With the increase in the scale of flue-cured tobacco planted by tobacco farmers in my country and the development of modern tobacco agriculture, intensive curing has been rapidly promoted and applied nationwide. Taking 2012 as an example, there were about 1.2 million intensive tobacco-curing rooms nationwide. According to statistics, more and more dense flue-cured rooms use tunnel furnaces based on the principle of dark fire and normal burning for heating. The structure of the tunnel furnace is simple, the cost is low, and it can be loaded with coal at one time, that is, 800 to 1,000 cylindrical shaped coals can be loaded at one time, which can mee...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the tunnel furnace, such as high temperature furnace gas reverse flow and burning combustion fan due to dark fire, low utilization rate of combustion air, hot air temperature not keeping up with the setting temperature of baking process, explosive combustion and low thermal efficiency, etc. Invention and design of a clean coal reverse combustion that has the technical characteristics of open flame reverse combustion, high temperature isolation, precise control of combustion and heating by starting and stopping the combustion fan, and meets the needs of my country's tobacco industry for saving labor and time, safety, economy and high quality, high efficiency, energy saving and environmental protection for intensive flue-cured tobacco Hot stove

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