NO LOSS DRYER
The wet air entering the dryer first comes in contact with the ceramic element of the Pre-Filter.Here solid impurity up to 5 microns and water droplets are effectively removed.
Now, saturated wet air (free of contaminants) enters the distribution box which splits the air stream and diverts it partly to the heater for heating and partly for adsorption.
The stream going for adsorption enters via the top four-way valve to the Adsorber tower, which is packed with desiccant. This Desiccant has a high surface area to porosity, which enables to hold large quantities of moisture from the compressed air. It also possesses the property of giving up this moisture on heating. Dry air leaving Adsorber from the bottom via the four-way valve enters the After Filter. The After Filter alike the Pre Filter has ceramic elements which prevents the desiccant dust carry-over into the system.
Going back to the distributor box, the second stream leaving the distributor passes through the heater where it is heated to the reactivation temperature of 180 Deg C.
This hot air leaving the heater passes through the tower to be reactivated via top four-way valve. On its way through the tower, it carries the moisture adsorbed by the Desiccant (in the previous cycle) and leaves the tower via the bottom four-way valve. Now, this wet air enters into the Reactivation cooler where it gets cooled to 40 Deg C and the moisture in the air condenses which is removed by the Moisture separator.
This air stream again joins by the main stream through the distributor. Hence, in this process, there is no loss of compressed air.
The change over of the Adsorber tower is accomplished by a linkage mechanism connecting the two four way valve shanks. A double acting pneumatic cylinder actuates this linkage. The timing of operation of this cylinder is controlled by a four-way solenoid valve, which in turn is controlled by the timer in the control panel. The air actuating the solenoid valve is first lubricated in an oil lubricator before entering the pneumatic cylinder. The air used for this purpose is dry air and is tapped from the after filter.
Two limit switches control the travel of the linkage mechanism
The Refrigerated type of Air Dryer can achieve an Atmospheric Dew point of (-) 230C
The Refrigerated type of air dryer works on Refrigeration principle. When the temperature of air is reduced the moisture gets condensed and then it will be separated.
Working of dryer consists of two main cycles. One is “Air cycle” and the second is “Vapour CompressionRefrigeration Cycle”
In the first cycle the wet inlet air with temperature 45-50°C enters the pre-cooler where it gets cooled by the outgoing dry air. The temperature of outgoing dry air rises due to transfer of heat with inlet air. The temperature of wet air is reduced to 27-30°C and then it enters the evaporator.
In evaporator the air will be cooled up to 3-5°C by vapour compression Refrigeration cycle, after that air enters in to moisture separator where moisture is removed from condensed air. The dry air goes to the pre-cooler before going out from the dryer.
There is option for the condenser in vapour compression cycle, i.e. Water Cooled Condenser OR Air Cooled Condenser.
Constant Atmospheric Dew Point of (–)40°C
Minimum loss of purged airLong life desiccant which gives desired dew point
Easy to Operate or TroubleshootDesigned as per ASME Sec VIII Div 1
Low Maintenance costLow Power Consumption
PuriFlair is the Only organization in India Serving the Indian industry since 1984 and we have over 3600 Refrigerated Dryer Installations, >1200 Heatless Dryer installations, >240 Heated type Dryer installations in India. Our installations are equivalent to all competitors put together including indigenous and imported Dryers. We are having excellent back up support in terms of supply of spares and timely services makes us most preferred supplier status.