Temperature lifting type molded coal drying kiln

A technology for drying kilns and briquettes, which is applied in the directions of drying solid materials, heating to dry solid materials, drying, etc. It can solve the problems of rapid evaporation, high energy consumption, high operating costs, and many equipments, and achieve the effect of uniform drying speed

CN101221011AInactive Publication Date: 2008-07-16刘宏建 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a temperature-boost moulded coal drying kiln. The invention adopts a hot air pipe (6) arranged on the internal-lower part of a kiln body (10) for hot air feeding, and the hot air pipe (6) distributes air along an inclined upper direction. An air inducing pipe (1) arranged on the upper part of the kiln gathers air along an inclined lower direction, and the air is exhausted through an air inducing machine and a dust removing device. When the moulded coal enters the kiln body (10) to be contacted with the hot air of the upper part of the kiln, the heat of the hot air is gradually transmitted to the moulded coal to gasify the water in the moulded coal, and the temperature of the moulded coal raises slowly and the moulded coal is dried slowly. When the moulded coal reaches the lower part of the kiln body (10) and contacts the high temperature and wet hot air 4 which just enters the kiln, the moulded coal is gradually dried, the moulded coal has lower humidity, the evaporation of the water in the moulded coal is slower, and the strength of the moulded coal is maintained; furthermore, the temperature rising speed and the drying speed of the moulded coal can be controlled by regulating the air temperature and the speed of the hot air. The invention is especially suitable for manufacturing long flame coal with higher fugitive constituent into moulded coal, and the dried moulded coal has higher cold and heat strength and more uniform drying speed.
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Description

technical field

[0001] The invention relates to the technical field of briquette drying, in particular to a temperature-raising type briquette drying kiln suitable for long-flame coal with relatively high volatile content. Background technique

[0002] At present, in the production process of industrial briquettes, the briquettes need to be dried after being shaped, so that the cold strength and hot strength of the briquettes can be improved and the briquettes can be used. There are two kinds of existing briquette drying kilns: one is a shaft kiln, and the other is a tunnel flap kiln. 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 vertical kiln such as ZL03216115.8 is equipped with hot air from the upper end, and the lower part is...

Examples

Embodiment Construction

[0021] As shown in Figures 1, 2, 3, and 4: the heating type coal drying kiln includes: a kiln body (10), a distributor (12), a hopper (11), a hot air pipe (6), and a draft pipe (1), induced draft fan and dust collector; the kiln body (10) is a rectangular column kiln body, the briquette inlet (3) above the kiln body is equipped with a distributor (12), and the upper part of the kiln body is provided with several air induction pipes ( 1), the bottom of the air induction pipe is provided with an air intake (8). The section of the air induction pipe (1) is an inverted triangle. Each air induction pipe (1) is connected with the air induction fan and the dust collector through the main air induction pipe (2) outside the kiln body (10); several hot air pipes (6) are arranged at the lower part of the kiln body, and The air outlet (9) that imports kiln body hot blast is arranged, and its hot blast pipe (6) cross-section is triangular, and both sides of triangle upper part are air outl...