Heatless Air Dryer

Silent Features:
  • Operation on ADSORPTION principle: Hence prevent entrainment of moisture in the pipe line however long it may be.
  • The most compact skid mounted unit supplied in ready for use state by connecting compressed air at inlet and outlet.
  • The stationary working system requires negligible maintenance.
  • Assured atmospheric dew point equal to -40 deg C or -70 deg C is required.
  • Ideal purging as per desiccant manufacturers instruction for regeneration.
  • Lesser pressure drop in total unit.
  • Modified purging silencer causes less noise.
  • Designed for Indian atmospheric conditions.
  • Easy for installation and commissioning.
Sequence of drying operation

This is as per the following 3 stages

  • Pre Filtration: The dust particles, condensed oil and moisture in liquid droplets and aerosol from is pre-filtered by set of pre fine filter.
  • Drying: The saturated compressed air is dried in desiccant bed tower.
  • Post filtration: The dry compressed air is re filtered in after filter for removal of residual fine particles if any.
Operations

The complete ADU operates in following three modes

  • Drying Mode: the wet saturated compressed air coming from set of pre filters is led through one of the inlet valve to the desiccant bed tower. The highly hygroscopic desiccant bed with sufficient air resident time due to proper velocity results in absorbing the moisture vapor and dries the air to desired level of dew point.
  • Refrigeration Mode: The small amount of dried air at almost atmospheric pressure is led through purge line to the saturated desiccant bed tower. The absorbed moisture in the desiccant bed at earlier drying mode is desorbed in purged air and regeneration takes place.
  • Pressurisation Mode: To avoid the pressure fluctuations at outlet of dryer, the regeneration mode tower is put in for pressurisation before it switches to drying mode.
  • The entire operation is electronic timer controlled and automatic at various modes shown above for proper sequence and timing. The total cycle time is 10 minutes or 4 Minutes as per the timer selection for the required dew point.
FLOW CAPACITY AT INLET FOR VARIOUS MODELS AT 7 Kg/cm2 g OP PRESSURE
S/N MODEL FLOW END CONN CONN TYPE OVERALL DIAMENSIONS IN MM WT.KGS(APPX)
Nm/Hr SCFM Depth Width Height
1 HD V 9 5 1/4" 1/4"BSP SC.F 150 550 670 35
2 HD V1 17 10 1/2" 1/2"BSP SC.F 410 700 1050 50
3 HD V2 25 15 1/2" 1/2"BSP SC.F 410 750 1280 70
4 HD V3 34 20 1/2" 1/2"BSP SC.F 410 750 1670 90
5 HD 001 50 30 1/2" 1/2"BSP SC.F 450 750 1850 120
6 HD001 V 80 45 3/4" 3/4"BSP SC.F 450 800 1680 150
7 HD 002 100 60 3/4" 3/4"BSP SC.F 500 850 1780 170
8 HD002 V 130 75 3/4" 3/4"BSP SC.F 500 850 1960 198
9 HD003 V 170 100 1" 1"BSP SC.F 550 1000 2100 227
10 HD004 V 240 140 1 1/2" FLGD.ASA 150 # 550 1000 2100 274
11 HD007 340 200 1 1/2" FLGD.ASA 150 # 600 1180 2230 350
12 HD 009 V 475 280 2" FLGD.ASA 150 # 600 1300 2300 498
13 HD 012 V 650 380 2" FLGD.ASA 150 # 1150 1450 1950 650
14 HD0016 V 850 500 2 1/2" FLGD.ASA 150 # 1275 1600 2350 790
15 HD 020 V 1050 620 3" FLGD.ASA 150 # 1380 1725 2480 925
16 HD025 1290 760 3" FLGD.ASA 150 # 1530 1850 2250 1125
17 HD 038 1940 1140 4" FLGD.ASA 150 # 1800 1690 2625 1570

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