DRYTECH ENGINEERS
Heatless Compressed Air Dryers / Gas Dryers
Heatless Compressed Air Dryers / Gas Dryers



The presence of oil, moisture and dust particles in compressed air is a well known fact for industrial applications. As the technology advanced with inducation of sophisticated modern machineries working on compressed air, the usage of recommended quality class of air as per machines manufacturer or international Standard Organisation (ISO) or Pneurope recommendation has become necessary. The usage of filtered, dry air as per above recommendations results in reduced wear and tear, increased machine uptime, lower rejections, better product quality and above all considerable saving in energy.

Drytech Air Drying Unit - HD series (Heatless) type offers quality class of air desired as per various recommendations for different pneumatic applications. The stationary air drying unit with negligible maintenance, lesser operating cost and longer service life is the right selection for pneumatically operated machines which needs purified compressed air.



Salient Features

  • Operating on ADSORP principle; Hence prevents entrainment of moisture in the pipe line however long is 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 and requires negligible maintenance
  • Assured atmospheric dew point equal to (-) 40 deg. C. or (-) 70 deg C as required
  • Ideal purging as per desiccant manufacturers instruction for regeneration
  • Lesser pressure drop in total unit
  • Modified purge silencer causing less noise
  • Designed for Indian atmospheric condition
  • Easy for installation and commissioning


  • It is as per following three stages
  • The dust particles, condensed oil and moisture in liquid droplets and aerosol from is per-filtered by set of pre-fine filter combination, The Compressed air with only vapourised from of moisture is permitted to enter the desiccant bed tower.
  • The Saturated Compressed air is dried in desiccant bed tower.
  • The dry compressed air is refiltered in after filter for removal of residual fine particles if any.
  • The complete ADU operates in following three modes.
  • The wet saturated compressed air coming from set of pre filters is led through one of the inlet valve (Operated by electronic timer) to the desiccant bed tower. The highly hygroscopic desiccant bed with sufficient air resident time due to proper velocity results in absorbing the moisture vapour and dries the air to desired level of dew point.
  • 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 desiccant bed at earlier drying mode is desorbed in purged dry air and regeneration takes place.
  • 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 timer selection for required dew point.


Quality of air at outlet : Application : To various engineering applications where atmospheric dew point is preferred (-) 40 °C and above.
Location : After Air Receiver in comp. air system. Dust : 5 u
Residual Oil : upto 0.1 PPM Moisture : (-)40 / (-)700C Atm. Dew Point
Range : upto 1140 SCFM flow Pressure : 10 Kg / cm2


Air Drying Plant

Air Drying Plant Type : Package consisting of common skid with provision for bare compressors mounting, Inlet / Outlet Air receiver with Dryer having fine filter combination & by-pass arrangement to deliver consistent quality air & pressure at outlet.
Range : upto 60 SCFM flow
Pressure : 10 kg/cm3
S/N MODEL FLOW CONN TYPE OVERALL DIMENSIONS IN MM WT. KGS
(APPX)
CONVERSION FACTOR AT VARIOUS PRESSURE
Nm/HR SCFM END CONN Depth Width Height  
1 HD V 9 5 1/4" 1/4"BSP SC. F 150 550 670 35 Op.Pressure Kg / CM2g Pressure Factor
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 0.63
4 HD V3 34 20 1/2" 1/2" BSP SC. F 410 750 1670 90 5 0.75
5 HD 001 50 30 1/2" 1/2" BSP SC. F 450 750 1850 120 6 0.87
6 HD 001 V 80 45 3/4" 3/4" BSP SC. F 450 800 1680 150 7 1
7 HD 002 100 60 3/4" 3/4" BSP SC. F 500 850 1780 170 8 1.13
8 HD 002 V 130 75 3/4" 3/4" BSP SC. F 500 850 1960 198 9 1.25
9 HD 003 V 170 100 1" 1" BSP SC. F 550 1000 1650 227 10 1.35
10 HD 004 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 HD 016 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 HD 025 1290 760 3" FLGD. ASA 150 # 1530 1850 2550 1125    
17 HD 038 1940 1140 4" FLGD. ASA 150 # 1800 1690 2625 1570    



S / N MODEL FLOW ENDCONN CONN. TYPE OVERALL DIMENSIONS IN MM WT. KGS APRROX.
  NM3 / HR SCFM DEPTH WIDTH HEIGHT
1 HDV 9 5 1/4" 1/4" BSP SC.F 150 550 670 35
2 HDV1 17 10 1/2" 1/2" BSP SC.F 410 700 1050 50
3 HDV2 25 15 1/2" 1/2" BSP SC.F 410 750 1280 70
4 HDV3 34 20 1/2" 1/2" BSP SC.F 410 750 1670 90
5 HD001 50 30 1/2" 1/2" BSP SC.F 450 750 1850 120
6 HD0001V 80 45 3/4" 3/4" BSP SC.F 450 800 1680 150
7 HD002 100 60 3/4" 3/4" BSP SC.F 500 850 1780 170
8 HD002V 130 75 3/4" 3/4" BSP SC.F 500 850 1960 198
9 HD003V 170 100 1" 1" BSP SC.F 550 1000 1650 227
10 HD004V 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 HD009V 475 280 2" FLGD. ASA 150# 600 1300 2300 498
13 HD012V 650 380 2" FLGD. ASA 150# 1150 1450 1950 650
14 HD016V 850 500 2 1/2" FLGD. ASA 150# 1275 1600 2350 790
15 HD020V 1050 620 3" FLGD. ASA 150# 1380 1725 2480 925
16 HD025 1290 760 3" FLGD. ASA 150# 1530 1850 2550 1125
17 HD038 1940 1140 4" FLGD. ASA 150# 1800 1690 2625 1570