Page 14 of catalogue Compressed air treatment of Boge Kompressoren Otto Boge GmbH & Co. KG

BOGE DAV Adsorption Dryer
Externally heated regeneration with vacuum drying, complete with pre-filter and after-filter Flow capacity: 420 – 14500 m3/h, 247 – 8526 cfm Max. operating pressure: 10 bar, 150 psig
Vacuum regenerated adsorption drying is the energy efficient solution for higher volumes of compressed air. Dewpoints to –70°C is possible! Before entering the dryer, a BOGE ‘F’ series micro-filter removes solids and impurities from the compressed air to 0.01 mg/m3. In the drying tower, the desiccant media removes moisture from the air to a dewpoint of -40oC (standard models). The parallel tower regenerates the wet desiccant bed. First it de-pressurises to atmosphere, simultaneously the vacuum pump beings to draw ambient air, that is pre-heated on entry, through the wet desiccant to complete the regeneration process.
Self cleaning media reduces Δp and increases moisture separation Low regeneration temperature Vacuum regeneration ensures energy efficient moisture removal at lower temperatures than traditional heat regeneration Vacuum cooling After drying the media the heater switches off and the vacuum pump sucks ambient air through the bed to cool it Pressure equalisation on wet side Regeneration takes place at atmospheric pressure. Venting tower is therefore total purge loss Consistent pressure dewpoint in operation Because ambient air drawn in from the drying process Constant pressure dew point at changeover Because compressed air re-pressurises dry tower Pressure dewpoints to – 70 °C Possible as well as the standard – 25°C or – 40°C Function display For pressure, temperature, heater operation, vacuum pump and changeover Alternative energy Regeneration using steam, hot water and other is available as an option Modular options: Purge air by-pass, thermistor controlled heaters, frequency controlled Vacuum pumps

The advantages of using the BOGE DAV Adsorption Dryer
Energy efficient system Savings of up to 25% compared to conventional systems 2-stage drying Optimised flow distribution through media bed

H

W

D

Examples: a) Compressed air to be dried: Volume of flow Min. operating pressure Max. inlet temperature Pressure dewpoint Factor from table 3000 m3/h 5 bar (ü) + 30 °C – 25 °C 0.80

effective capacity = factor from table
3000 m3/h = 3750 m3/h 0.80
Selected: type DAV 685 b) To calculate the max. dryer capacity: Nominal capacity x factor from table 4100 x 0.80 = 3280 m3/h c) Reserve dryer capacity: Max. dryer capacity – volume of flow 3280 m3/h – 3000 m3/h = 280 m3/h

BOGE Volume of flow* ConWidth Height Depth Weight Power Type nection W H D without filter required DAV m3/min. m3/h cfm DN (mm) (mm) (mm) kg kWh/h 75 7.0 420 241 40 1215 1955 992 460 3.1 85 8.5 510 293 40 1214 2204 992 560 3.8 105 10.7 640 370 50 1306 2247 1082 750 5.2 145 14.2 850 487 50 1360 2271 1120 800 6.7 200 19.7 1180 681 80 1560 2664 1264 1150 10.9 250 25.0 1500 863 80 1610 2680 1279 1350 12.8 330 33.0 1980 1141 80 1700 2730 1585 1720 16.3 390 39.2 2350 1353 100 2020 2845 1447 1880 18.1 455 48.8 2930 1688 100 2080 2870 1580 2350 22.5 555 59.2 3550 2047 100 2170 2940 1740 2850 27.8 685 68.3 4100 2365 150 2450 3190 1780 4000 32.2 790 79.0 4740 2735 150 2550 3210 2110 4100 38.9 875 87.5 5250 3029 150 2550 3230 1955 4200 44.9 1035 103.5 6210 3582 150 2600 3500 1910 4950 52.3 1185 118.3 7100 4094 150 2650 3520 1940 5700 56.4 1335 133.3 8000 4611 200 3100 3585 2180 6400 67.1 1535 153.3 9200 5306 200 3150 3605 2300 7400 75.6 1800 180.0 10800 6224 200 3250 3670 2355 8700 85.3 2050 205.0 12300 7088 250 3500 3855 2515 11500 98.9 2415 241.7 14500 8359 250 3600 3895 2570 13500 111.4 * m3/h at 1 bar to DIN 7183. Higher capacities and lower pressure dewpoints down to – 70 °C are available upon request. Receiver as per PED individual acceptance / CE standard

Conversion factors, depending on pressure and temperature bar (ü) / t °C 4 5 6 7 30 0.69 0.80 0.90 1.02 35 40
Subject to modification

8 1.06 1.05 0.79

9 1.17 1.16 0.88

10 1.29 1.28 0.96

0.44 0.28

0.62 0.42

0.80 0.59

1.00 0.70

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