Waste heat recovery type steam plate-press dryer

Abstract

The invention discloses a waste heat recovery type steam plate-press dryer. A dryer body is provided with a driving wheel, a driven wheel and a scratch board; the scratch board is used for driving materials to be conveyed on a steam flat plate; an upper drying area is tangentially connected with a cyclone dust removal waste heat efficient recoverer formed by stacking a tube type heat exchanger and a cyclone dust removal device through an induced draft fan; the upper end of a shell pass of the tube type heat exchanger is connected with an air inlet pipe; the lower end of the shell pass of the tube type heat exchanger is connected with a lower drying area through an air blower; an impeller of the induced draft fan is provided with blades taking the shape of a hollow reversed water drop; the shape contour of the induced draft fan is involute. The waste heat recovery type steam plate-press dryer has the advantages that waste heat recovery and dust removal are integrated creatively, and the cyclone dust removal waste heat efficient recoverer is designed, so that waste heat recovery and dust removal are completed in one step, the equipment investment is reduced, and the working efficiency is improved; the blades adopt the hollow reversed water drop structures, so that real-time cleaning of dust is achieved, and the impeller strength of the induced draft fan is improved, the stability is enhanced, and safety accidents caused by dust accumulation are effectively eliminated; therefore, the application prospect is wide.

Description

technical field [0001] The invention relates to a dryer, in particular to a tail heat recovery type steam plate dryer which does not accumulate dust in a fan. Background technique [0002] Due to its mature technology, strong adaptability, low energy consumption and high reliability, the steam heating plate dryer has become one of the main preferred equipment for drying materials. The material is conveyed by scraper on the steam heating plate for contact heating drying. Due to the simple structure, extremely low energy consumption, strong processing capacity, and each layer of material is turned over, the quality of the dried product is particularly uniform and reliable. However, the drying process needs to continuously discharge hot and humid tail gas to promote the drying process. Since the exhaust gas is rich in a large amount of tail heat, it is necessary to perform tail heat recovery operation on the tail gas, so it is of great significance to optimize the design of tai...

AI Technical Summary

Problems solved by technology

Once part of the hardened dust is shaken off, it will immediately leave the dynamic rotation balance of the induced draft fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

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