Temperature and pressure swing adsorption dry air production system and operation method thereof

The invention discloses a temperature and pressure swing adsorption dry air production system and an operation method thereof, and relates to the technical field of air drying, the temperature and pressure swing adsorption dry air production system is characterized by comprising a condensation dehumidification subsystem, an air compression subsystem and a pressure swing adsorption subsystem, the condensation dehumidification subsystem comprises an inlet filter, a surface air cooler and an air-water separator which are sequentially connected end to end through an air pipe, and the air compression subsystem comprises an air blower and an aftercooler which are sequentially connected end to end through an air pipe; the pressure swing adsorption subsystem comprises a first dehumidifier, a second dehumidifier, a first adsorption tower, a second adsorption tower and a regeneration fan. Under the condition that dry air with the dew point temperature as low as-70 DEG C is efficiently and stably produced, the adsorptio