Temperature lifting type molded coal drying kiln

Abstract

The invention discloses a heating-type briquette drying kiln. The hot air pipe (6) arranged at the lower part of the kiln body (10) is used to input hot air, and the hot air pipe (6) distributes air obliquely upward; The pipe (1) collects the air obliquely downward, and discharges it through the induced draft fan and the dust collector; when the molded coal enters the kiln body (10) and contacts the hot air reaching the upper part of the kiln body, the heat of the hot air is gradually transferred to the molded coal, and the molded coal is vaporized Moisture in the briquette; the briquette slowly heats up and dries; when the briquette reaches the bottom of the kiln body (10) and contacts the hot air with high temperature and humidity just entering the kiln, the briquette is gradually dried, and the humidity of the briquette is less. The moisture in the coal briquettes evaporates slowly to maintain the strength of the briquettes; and the temperature and drying speed of the briquettes can be controlled by adjusting the temperature and speed of the hot air. It is especially suitable for long-flame coal with high volatile content to make briquettes. The dried briquettes have relatively high cold and heat strength, and the drying speed is relatively uniform.

Description

Technical field [0001] The invention relates to the technical field of coal briquette drying, and is particularly suitable for a temperature-rising briquette drying kiln for long flame coal with higher volatile content. Background technique [0002] At present, in the production process of industrial briquette, the briquette needs to be dried after forming, so that the cold and thermal strength of the briquette can be improved and the briquette can be used. There are two existing briquette drying kilns: one is vertical kiln and the other is tunnel turning kiln. The tunnel flap kiln has a constant temperature, there are many moving equipment in the kiln, the maintenance workload is large, the energy consumption and operation cost are high, and the equipment operation safety is not high, and it is rarely used now. The currently used coal drying vertical kiln such as ZL03216115.8 has hot air at the upper end and an induced draft fan at the lower part. As soon as the coal is in the k...

AI Technical Summary

Problems solved by technology

The temperature inside the tunnel flap kiln is constant, there are many moving equipment in the kiln, the maintenance workload is heavy, the energy consumption and operation cost are high, and the equipment operation safety is not high, so it is rarely used now

Currently used briquette drying shaft kilns such as ZL03216115.8 are equipped with hot air from the upper end, and the lower part is equipped with an induced draft fan. As soon as the briquette coal arrives in the kiln, that is, at the outlet of the hot air, it will be heated quickly. At this time, the humidity of the briquette coal is high. The humidity of the hot air is low, and the water in the briquette will evaporate rapidly, which will affect the strength of the briquette, making it difficult to make briquettes with long-flame coal with high volatile content.

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