Heat exchange and mass exchange dryer and control method

Abstract

The invention discloses a heat exchange and mass exchange dryer which comprises an air reserve bin, a drying box, an air circulation device, a drying box gas exchange system and an air treatment unit.A main control circuit is electrically connected with the air circulation device, the drying box gas exchange system and the air treatment unit. The drying box and the air reserve bin perform gas exchange, energy exchange and temperature-humidity adjustment through the air circulation device and the drying box gas exchange system, and the air reserve bin achieves heating, cooling, dehumidifying,humidifying and gas exchange functions through the air treatment unit. The invention further provides a control method of the heat exchange and mass exchange dryer. Compared with the prior art, the heat exchange and mass exchange dryer has the advantages that the material drying process is better in temperature-humidity stability, control precision is higher, heat use ratio can be increased, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of material drying equipment, in particular to a heat and mass exchange dryer and a control method. Background technique [0002] In the prior art, a forced drying medium is usually used to pass through the material to be dried when drying the material, so that the drying gas absorbs the moisture of the material, so as to achieve the purpose of drying the material. [0003] Different materials have corresponding drying temperature, humidity and wind speed in the drying process. Generally, the temperature, humidity and air volume requirements of the drying process are changing, and it is difficult for the host machine of the dryer to directly process to obtain the best medium temperature, humidity and air volume. . [0004] For some materials that need to strictly control the evaporation rate of water, a good match of the temperature, humidity and air volume of the drying medium is required to achieve high-q...

AI Technical Summary

Problems solved by technology

However, in the drying equipment of the prior art, after using the heat pump of the dryer to generate a certain flow rate of drying medium, it is directly applied to the drying of materials, which often fails to achieve the desired drying effect.

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