Briquette drying method

Abstract

The invention relates to a briquette drying method. A drying furnace used by the briquette drying method comprises a furnace body, a coal outlet hopper arranged at the bottom of the furnace body, an air channel arranged in the furnace body and a coal channel arranged in the furnace body. The coal channel comprises a longitudinal coal channel and a horizontal coal channel which are communicated with each other, wherein the horizontal coal channel is arranged at the bottom in the furnace body, and the longitudinal coal channel and the air channel are distributed at interval and are arranged above the horizontal coal channel. The air channel is communicated with the horizontal coal channel through a dust exhaust hole, coal rods can previously enter the longitudinal coal channel through the top of the drying furnace and then slowly move downwards along the longitudinal coal channel to enter the horizontal coal channel, the coal rods is in contact with hot air to exchange heat with the hot air in a moving-downwards process, and finally the coal rods can move downwards to a tray to be vibrated and discharged by a vibrator. The drying furnace can automatically exhaust dust, is small in heat loss in exhausting dust, effectively solves the problem that dust accumulation in air channel, guarantees even distribution of the hot air and is high in heat utilization rate. Meanwhile, the drying furnace solves the problems of coal accumulation, fire caused by overhigh negative pressure and uneven coal output quantity.

Description

technical field [0001] The invention relates to a method for drying coal briquettes. Background technique [0002] Briquette is a strip or block fuel coal that is machined into a certain shape and has certain physical and chemical properties by using pulverized coal and binder. my country has done a lot of research work on industrial briquette, and achieved considerable practical results, but in general, these existing technologies have low strength in hot and cold states, poor combustion performance and so on. The drying quality of the briquette has a great influence on the strength of the briquette, if the drying is not good, the strength of the briquette is low. [0003] In the currently commonly used briquette drying method, there are the following deficiencies: (1) Due to the negative pressure generated by the draft of the induced draft fan, the coal ash burned in the hot blast stove is entrained by the hot air, enters the air duct of the drying furnace, and falls At ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to provide a method for drying briquettes that can automatically discharge ash in a drying furnace with small heat loss, effectively solves the problem of ash accumulation in the air duct of the drying furnace, and solves the problem of dust accumulation in the air duct. Powder blocks some of the air holes, resulting in uneven distribution of hot air in the drying furnace and low heat utilization

[0005] The further technical problem to be solved by the present invention is to solve the problems of coal accumulation on the drying furnace, fire caused by excessive negative pressure of the hot blast stove, and uneven coal output

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