Rotary dryer suitable for garbage materials

Abstract

The invention discloses a novel rotary dryer suitable for garbage materials. The novel rotary dryer suitable for the garbage materials comprises a barrel, a barrel driving device, a material inlet assembly and a material outlet assembly, wherein a plurality of elongated lifting plates, a plurality of trapezoidal lifting plates and a plurality of pushing lifting plates are arranged in the barrel; the elongated lifting plates are distributed uniformly along the circumference; the length direction of each elongated lifting plate is set in the axial direction of the barrel; a long side of each elongated lifting plate is welded with the inner side of the barrel; wide sides of the trapezoidal lifting plates are connected to the other long sides of the elongated lifting plates at intervals; the pushing lifting plates are arranged in the axial direction of the barrel at intervals; and an included angle is formed between the plane of each pushing lifting plate and the axial direction of the barrel. The lifting efficiency is improved, and the materials are raised fully; the materials are uniformly dispersed to a cross section of the rotating barrel, so that the materials are in full contact with smoke, and the heat transfer efficiency is improved; by the pushing lifting plates, the pushing angle is changed, the material advancing speed is also changed, the retention time is adjusted, and the materials are dried fully; and by a hot smoke supplementing device, the temperature of the materials in a middle rear part of the rotating barrel is increased, and therefore, the drying effect is improved.

Description

technical field [0001] The invention relates to a rotary drum dryer suitable for garbage materials, which belongs to the field of drying equipment for garbage materials. Background technique [0002] Among the existing urban waste treatment methods, the methods widely used at home and abroad mainly include sanitary landfill, high-temperature composting and incineration, pyrolysis treatment, etc. Other new technologies are making continuous progress. Raw waste contains a lot of water, how to effectively dry the waste before burning or regeneration and pyrolysis, and remove the large amount of water plays a vital role in the whole waste treatment process. At present, there are many drying equipment for sludge, coal slime, ore and biomass. However, for the special mixed material of garbage, the drying equipment with high water content and complex composition is not yet mature. The feasible method is to use a horizontal drum dryer, which is equipped with fried materials with di...

AI Technical Summary

Problems solved by technology

This prior art adjusts the residence time of garbage by changing the overall inclination angle of the drum. Since it needs to be adjusted on the base, the overall structure is bulky, the adjustment process is inflexible and slow, and it is difficult to achieve real-time adjustment; in addition, a more complicated mechanism is required to realize The change of the angle requires a large investment; for special waste materials, the temperature of the hot flue gas is too high, and the dried waste is easy to shrink and deform or even burn. The temperature of the hot flue gas is low, and the required air volume increases accordingly, and the waste is quickly blown out and dried. cylinder, can not play the role of effective drying; it is difficult to control the flow and temperature of hot air only at the entrance

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