Patent ID: 11904271
Assignee: SPX FLOW TECHNOLOGY KOREA CO., LTD
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A two-stage dryer system comprising:
a pre-heater configured to receive a first compressed air and a second compressed air, the pre-heater including a first heat exchanger configured to transfer a first amount of heat from the first compressed air to the second compressed air;
a cooling dehumidifier configured to receive the first compressed air from the pre-heater, the cooling dehumidifier including:
a freezer in which a refrigerant circulates through a refrigeration cycle, and
a second heat exchanger including a first channel through which the first compressed air flows, a second channel through which the refrigerant of the freezer flows, and a static phase change material disposed between the first channel and the second channel,
wherein the second heat exchanger is configured to transfer a second amount of heat from the first compressed air to the refrigerant via the phase change material, whereby the transfer of the second amount of heat from the first compressed air causes a first amount of moisture in the first compressed air to condense and thereby removed from the first compressed air; and

a deliquescent dehumidifier configured to receive the first compressed air from the cooling dehumidifier, the deliquescent dehumidifier configured to bring the first compressed air discharged from the cooling dehumidifier in contact with a deliquescent agent to remove a second amount of moisture contained in the first compressed air through a process of deliquescence caused by the deliquescent agent, the deliquescent agent having a moisture absorption ratio of less than or equal to 50% (≤RH 50), and then discharge the first compressed air with the second amount of moisture removed, the discharged air defining the second compressed air,
wherein the second compressed air is entirely transferred from the deliquescent dehumidifier to the pre-heater.