Automatic ash discharge briquette drying furnace

Abstract

The invention relates to an automatic ash discharging type coal drying furnace comprising a furnace body, coal outlet hoppers located at the bottom of the furnace body, air flues and coal channels, wherein the air flues and the coal channels are located in the furnace body. Ash discharging holes are formed in the bottoms of the air flues, the coal channels include longitudinal coal channels and a transverse coal channel, the transverse coal channel is located at the bottommost of the inside of the furnace body, the longitudinal coal channels and the air flues are distributed at intervals and located above the transverse coal channel, the longitudinal coal channels are communicated with the transverse coal channel, and the air flues are communicated with the transverse coal channel through the ash discharging holes. A coal slide carriage in each coal outlet hopper is arranged in an inclined mode, the inclined installation angle beta of each coal slide carriage ranges from 50 degrees to 55 degrees, and the horizontal distance L from the bottom edge of each coal slide carriage to a side plate of each coal outlet hopper is 190-210mm. The drying furnace achieves automatic ash discharging, does not cause heat loss, effectively solves the ash accumulation problem of the air flues of the drying furnace, guarantees that hot air of the drying furnace is evenly distributed and the heat utilization rate is high, and meanwhile solves the problems of coal accumulation on the drying furnace and uneven coal output on the two sides of the same coal outlet hopper.

Description

technical field [0001] The invention relates to a drying furnace, in particular to an automatic ash-discharging briquette drying furnace. Background technique [0002] Most of the briquette drying towers use coal as the heat source to burn in the hot blast furnace, and then directly introduce the hot air into the drying tower through the fan to directly contact the briquette for heat exchange, because the fan needs a large gravitational force to ensure the drying process. The air volume required for drying and the full combustion of the coal seam in the hot blast stove will inevitably cause a large negative pressure in the hot blast stove, so that some coal slag and ash with smaller particles will be brought into the drying furnace. When these small particles of coal slag and coal ash enter the air duct of the drying furnace, most of them are deposited at the bottom of the air duct due to the decrease in flow velocity. If the air duct increases, the space in the air duct wi...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an automatic ash-discharging briquette drying furnace that can realize automatic ash discharge without causing heat loss. The drying furnace has high drying efficiency and greatly improved briquette drying quality , to solve the problem of uneven distribution of hot air in the drying furnace and low heat utilization rate due to the powder accumulation in the air duct blocking some of the air holes

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