KR20090009994A - Desgign and manufacture of deccicant type air dryer for 40kg/cm^2 - Google Patents

Abstract

An ultra-high voltage adhesion type air drier of 400 kg/cm^2 is provided to maintain steadily and continuously a dew point temperature for 4 hours by applying two towers serially. An adhesion type air drier contains a controller, a fluid connection part, and a group equipment part, a pressure vessel and an inner absorbent. The adhesion type air drier has a pressure more than 400 kg/cm^2G and a capacity of 100 cfm, heats a pressure vessel and the inner adsorber at 175°C and maintains a dew point temperature -63°C.

Description

Design and manufacture of a 400 kg / ㎠ special high pressure adsorption type air dryer

Common air dryers are refrigerated and adsorptive, and they are refrigerated when the temperature is above 3 ℃ and adsorption when the dew point temperature is lower than that.

New technology has been applied in the development and supply of adsorption dryers for pressures of 400 kg / cm2, capacity of 100 cfm, dew point temperature of -63 ° C, and continuous operating conditions, which have been developed recently according to the requirements of the users.

Adsorption air dryers consist of a control unit, piping, accessories, pressure vessels and internal adsorbents, of which pressure vessels must comply with regulations according to volume and pressure by the Industrial Safety and Health Act or the High Pressure Gas Safety Control Act. Several methods have been used to change the regeneration method of the adsorbent in consideration of the filters and the efficiency of the inlet and outlet parts as an accessory device part.

In the case of the development of this special high-pressure dryer, the design meets the four conditions suggested by the user.

1. Continuous operation possible

2. Apply pressure over 400 kg / cm2G and capacity of 100 cfm

3. Heating at 175 ℃ to pressure vessel and adsorbent inside by heater

4. Dew point temperature -63 ℃

Applicable to research facilities related to the aerospace industry

1. Two pressure vessels were applied to enable continuous operation, switching between each other, dehumidifying compressed air, and regenerating the adsorbent contaminated with moisture.

2. In order to apply small-capacity high-pressure conditions, the application of the size and thickness of the pressure vessel was applied after examining the application to the Industrial Safety and Health Act and the High Pressure Gas Safety Management Act.

3. In order to rebuild the adsorbent contaminated with water, the band type heater is applied to the pressure vessel and the dehumidifying agent filled in the inside at 175 ℃ for at least 1 hour while maintaining some air flow. Attached to the pressure vessel to maintain a constant temperature.

4. Two towers were applied in series to maintain the dew point temperature continuously and stably for a given 4 hours.

The high pressure humid air generated from the compression device is sucked into the left tower through the control ball valve (V1) while some condensate is removed while passing through the primary filter and the drain device on the inlet side, and passes through the absorbent charged inside the tower. The moisture contained in the compressed air is filtered by the moisture absorbent, and the dried air is removed to the system through the control ball valve V3 and the secondary filter.

At this time, part of the dry air (about 1 ~ 3%) flows to the right tower through the flow control valve and check valve, and is heated to 175 ℃ by the band heater installed outside the tower to dry the moisture absorbent. Moisture-containing air is released into the atmosphere through sound insulation.

Claims (1)

      Adsorption air dryer manufacturing technology that can produce dew point temperature -63 ℃ in compressed air system with special capacity of 400 kg / cm2G and 100 cfm capacity.

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