Screw type drying tower

Abstract

The invention discloses a screw type drying tower. The screw type drying tower comprises a tower body, a feeding pipe, a hot air nozzle and a discharging pipe, wherein the tower body is vertically arranged; the screw type drying tower is characterized in that a spiral flow guide plate is arranged inside the tower body; the spiral flow guide plate spirally rises from bottom to top and extends into the tower body from the inner wall of the tower body; a lifting cabin is arranged at the bottom of the tower body; the hot air nozzle is communicated with the lifting cabin; a lifting blade is arranged inside the lifting cabin; the feeding pipe extends into the tower body via the tower body sidewall above the lifting cabin and is arranged below the spiral flow guide plate; the discharging pipe is horizontally arranged at the top of the tower body; the tail end of the discharging pipe is connected with a cyclone separator. Compared with the prior art, the screw type drying tower disclosed by the invention has the advantages that salt particles are separated by arranging the spiral flow guide plate, the separated fine salt particles enter the discharging pipe via the tower body, and the relatively large salt particles are crushed, rapidly dried and subsequently discharged, so qualified salt particles can be screened and dried and the drying effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of chemical drying equipment, in particular to a spiral drying tower. Background technique [0002] Drying equipment is a device used for drying operations. The moisture in the material (generally referring to water or other volatile liquid components) is vaporized and escaped by heating to obtain a solid material with a specified moisture content. Generally, in the process of chemical production, it is difficult to quickly dry the salt grains produced by crystallization, because the salt grains produced during crystallization often contain a large number of holes, some holes are even a sealed cavity, in these The liquid phase in the pores and cavities is difficult to be quickly vaporized and lost. It often takes a lot of heat to bake the entire salt grain to a very high temperature, so that the salt grain can be completely dried after being exploded. Such a scheme not only wastes a large amount of heat ene...

AI Technical Summary

Problems solved by technology

Generally, in the process of chemical production, it is difficult to quickly dry the salt grains produced by crystallization, because the salt grains produced during crystallization often contain a large number of holes, some holes are even a sealed cavity, in these The liquid phase in the pores and cavities is difficult to be quickly vaporized and lost. It often takes a lot of heat to bake the entire salt grain to a very high temperature, so that the salt grain can be completely dried after being exploded.

Such a scheme not only wastes a lot of heat energy, but also cannot realize large-scale continuous production.

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