This series adopts pi D. The temperature control system can accurately control the regeneration temperature; This series of dehumidification system adopts cooler structure to ensure lower return air temperature and dew point; A return air filter is installed inside to ensure that the honeycomb runner is not polluted by raw material dust; Compared with silica gel adsorption honeycomb dehumidification, the full molecular sieve honeycomb dehumidification has better effect.