Clean coal reversal combustion hot-blast stove with rib sheets

Abstract

A clean coal reversal combustion hot-blast stove with rib sheets comprises combustion chambers, the rib sheets, smoke exhaust pipes and briquette coal beds. The smoke exhaust pipes are arranged vertically, and the outer wall surfaces of the smoke exhaust pipes are connected with the multiple rectangular rib sheets in a full weld mode. The bottom transverse edges of the rib sheets are connected tothe outer wall surfaces of the top surfaces of the combustion chambers in a full weld mode. The radius of an inner cavity of each combustion chamber is 1.0-1.2 m. The inner cavities of the combustionchambers communicate with inner cavities of the smoke exhaust pipes through smoke exhaust openings in the top surfaces of the combustion chambers. The briquette coal beds are arranged in spaces of theinner cavities of the combustion chambers in a stacked mode. Each briquette coal bed is in an annular cylindrical shape. An obvious gap does not exist between every two pieces of adjacent briquette coal. The annular top surfaces of the briquette coal beds are tightly attached to the inner wall surfaces of the top surfaces of the combustion chambers. The inner diameter of the inner side surface ofeach briquette coal bed is 200-300 mm, and the inner side surfaces of the briquette coal beds are located on the downward-extending surfaces of the inner wall surfaces of the smoke exhaust pipes; andthe distance between the outer side surface of each briquette coal bed and the inner wall surface of the corresponding combustion chamber is 100-150 mm, and spaces of the inner side surfaces of the briquette coal beds are ignition material stacking areas. The clean coal reversal combustion hot-blast stove can be used for tobacco bulk curing and loose leaf bulk curing hot-blast stoves. According to the clean coal reversal combustion hot-blast stove, coal loading is achieved at a time, coal is saved by 25%, the clean coal reversal combustion hot-blast stove can generate hot air by being tightlyattached to a technology curve, and the temperature of a combustion-supporting fan is less than 38 DEG C.

Description

technical field [0001] The invention relates to a ribbed clean coal back-burning hot air stove with technical features such as open flame back-burning, high-temperature isolation, and precise control of combustion and heating by starting and stopping of a combustion-supporting fan. Heating device use. 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 tunnel hot blast stove has a simple structure and low cost, and can be loaded with coal at one time, that is, 800 to 1,000 cylindrical briquettes can be loaded at one time, which can meet t...

AI Technical Summary

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. Invented and designed a ribbed clean coal with the technical features of open flame reverse combustion, high temperature isolation, precise control of combustion and heating by starting and stopping the combustion fan, and meeting the needs of my country's tobacco industry for saving labor and time, safety, economy, high quality, high efficiency, energy saving, environmental protection and intensive flue-cured tobacco Reverse burning hot blast stove

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