Patent ID: 9463414
Filing Date: 2016-10-11
CPC Classification: B01D,B01J

Claim Text:
1. A layered temperature control method for performing a uniform temperature control on a dehumidifying element of a direct heating desorption type drying device during regeneration, comprising the steps of: performing a heating process, wherein a first dehumidifying unit of the dehumidifying element is heated by a preheater and thereby a plurality of dehumidifying units connected in series with the first dehumidifying unit are heated until the temperature of the dehumidifying element reaches a temperature range for regeneration; performing a temperature maintenance process, wherein heating is activated or stopped according to temperature variation of the individual dehumidifying units so as to maintain the regeneration temperature within a tolerable range; and performing a cooling process, wherein the preheater is stopped from heating the dehumidifying units and cooling air is provided to accelerate the cooling of the dehumidifying element.