Waste heat comprehensive utilization fertilizer granule drying device

Abstract

The invention discloses a fertilizer granular drying device with a waste heat comprehensive utilization function. A roller assembly is formed by connecting a guide cylinder, a pre-drying cylinder, a turning raising and drying cylinder and a smooth cylinder which are sequentially arranged from the inlet end to the outlet end; a preheating pipeline parallel to the axis of the pre-drying cylinder is arranged on the inner wall of the pre-drying cylinder; a raising plate parallel to the axis of the turning raising and drying cylinder is arranged on the inner wall of the turning raising and drying cylinder; a hot air supply mechanism comprises a het exchange tower, a normal-temperature air inlet of the tower is connected with an air filter, a heat exchanger is arranged in the heat exchange tower, and a hot air outlet is connected with a main air inlet pipe of the roller assembly; material breaking and material bonding can be avoided, and the uniform drying is achieved; heat energy of high-temperature smoke generated by boiler combustion is fully utilized, heat energy is transmitted to the air in a heat exchange manner, the hot air is used for drying of a fertilizer production process, and the prominent effects of saving energy and reducing the production cost are achieved.

Description

technical field [0001] The invention relates to a drum type fertilizer drying system, which belongs to the field of fertilizer processing equipment. Background technique [0002] The drum assembly of the existing drum-type fertilizer drying system is usually composed of a material guide cylinder, a drying cylinder and a smoothing cylinder. There is a lifting plate in the drying cylinder, and the materials used for fertilizer production are heated and dried while being turned by the lifting plate. Dry. The disadvantages are: (1) The material is prone to collision and fragmentation when it is turned over, for example, when drying granular fertilizers, the shape of the particles is incomplete; (2) The material is quickly heated in the drying drum and easily forms larger blocks Shaped materials, resulting in uneven drying or sticking of materials. [0003] On the other hand, the drying of granular fertilizers is inseparable from hot air. At present, fertilizer manufacturers ge...

AI Technical Summary

Problems solved by technology

The disadvantages are: (1) The material is prone to collision and fragmentation when being turned over, for example, when drying granular fertilizers, the shape of the particles is incomplete; (2) The material is quickly heated in the drying drum and easily forms larger blocks Shaped materials, resulting in uneven drying or sticking of materials

The main disadvantage of this method is high energy consumption, which leads to increased operating costs of enterprises

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