Self-cleaning HEPA filter systems

containment-oeb-1-3

Construction of the filter system.

Origin of the HEPA filter system

The construction of the body of the self-cleaning HEPA filter system derives from the filter units engineered for the filtration of radioactively charged dusts.

The HEPA filter system applied to filter radioactively charged dust from atmospheric air was further developed in the 1970ies by Mr. Kalman Andrasfalvy sen. for the filtration of dust laden process air with even highest dust loads.

Today

the self-cleaning HEPA filter system is adapted to the special needs in the

  • Nuclear industry
  • Chemical-Pharmaceutical industry,
  • Food and Cosmetics Industry,
  • General industries with hazardous to health dusts.

In general, the self-cleaning HEPA filter system provides:

Explosion prevention

Special attention has been paid to explosion prevention and explosion protection, so that the self-cleaning HEPA filter system does not underlie the ATEX Directive 2014/34/EU.

  • It can be used safely without explosion venting and suppression systems.
  • It can be installed inside the production rooms together with all other production machines, as no explosion danger is to be expected.

Containment Solutions:

Protection of the operator and environment as well as prevention of cross-contamination.

  • highest possible filter efficiencies of H14 / EN 1822.
  • Lowest possible contamination when handling the system OEB 1-6

Function of the self-cleaning HEPA filter system

The filter system has been designed in a way that it can effectively filter even highest dust loads of up to 100 g/m³/h with coarse and finest respirable dusts by means of a cyclone effect, whereby the coarse dusts are separated in advance.

The HEPA filter cassettes stage 1 filter the dust laden process air remaining after the filtration of the cyclone effect within. 
The individual police filter stage 2 in each module guarantees a constant separation efficiency H 14 according to EN 1822.

The cleaning of HEPA filter cassettes stage 1 takes place off line in each module 
individually. The other(s) remain in operation, so that a constant filtration with an 
off line cleaning becomes possible.

The dedusting intervals are initiated according time intervals, and can be set actual requirements.

Classification of self- cleaning HEPA filter unit acc. to
  • unit series, and
  • module sizes

Filter capacity

m³/h		 Filter area
 module 
twin module
 		 Amount of modules
 		 Amount
of filter stages
 		 OEB 
levels
 		 Fields of 
application
 
1.000-6.000
3.000-12.000 		10
20		 2-8
4-16 		2 6 Extremely high 
toxic
2.500-12.000
6.000-24.000 		20
40		 2-8

4-16		 2 4-5 Toxic-
highly toxic
3.000-14.000

7.000-29.000		 24

48		 2-8

4-16		 2 2-3 Low toxic – 
medium toxic
3.500-16.000

8.000-33.000		 28

56		 2-8

4-16		 2 1 Non toxic

Classification of the self-cleaning HEPA filter series according to the filter change method with respective filter lifting table

HEPA filter cassette size Self-cleaning HEPA filter unit serie Disposal of HEPA filter cassette
Size: 305 x 610 x 292 mm
Filter area: 10m2
Cassette type: HF 1 / 10
hf1-10g		 Unit type: MMS 10/3.2
Capacity: 2.000 m3/h
 
mms-10-3-2 		filterwechsel-fibre-drum-2
Size: 610 x 610 x 292 mm
Filter area: 20m2
Cassette type: HF 1 / 20
hf1-20g		 Unit type: MMS 20/4.2
Capacity: 6.000 m3/h
 
mms-20-4-2 		filterwechsel-plastiksack-2
Size: 762 x 610 x 292 mm
Filter area: 24m2
Cassette type: HF 1 / 24
hf1-24		 Unit type: MMS 24/5.2
Capacity: 9.000 m3/h
 
mms-24-5-2 		filterwechsel-plastiksack-2
Size: 915 x 610 x 292 mm
Filter area: 28m2
Cassette type: HF 1 / 28
hf1-28		 Unit type: MMS 28/3.2
Capacity: 6.300 m3/h
 
mms-28-3-2 		filterwechsel-plastiksack-2

Classification of HEPA filter systems according to dust collection method and to the toxicity of the dust to be filtered.

OEB level Dust recovery system Dust recovery method

1 – 3
Standard
  • Semi-automatic emptying.
    Level and time monitored.
  • Bag in bag out method with closable lid.
4
  • Semi-automatic emptying.
    Level and time monitored.
  • Bag in bag out method with closable lid
  • Inside glove box
5
  • Semi-automatic emptying.
    Level and time monitored.
  • Bag in bag out method with closable lid.
  • Inside isolator
  • Decentralized with vacuum pump
  • WIP washing process in isolator before opening.
  • Double bag in bag out
    
method with endless liner.
6
  • Semi-automatic emptying
    level and time monitored.
  • Bag in bag out (BIBO) method with closable lid.
  • Inside isolator
  • WIP (Wash in Place) washing inside the isolator before opening.
  • Double bag in bag out
    method with RTP port. (Rapid Transfer Port system)

MMS ( Multiple Modul Series ) HEPA filter unit cassette size: 305 x 610 x 292 mm

Filter capacity

m³/h 		Filter unit type


 Total filter area
stage 1
m² 		Total filter area
stage 2
m² 		Dimensions
W x D x H
mm 		Diameter
ductwork
mm 		Weight

kg 		Symbolic depiction
Front view – Side view
 
1.000 MMS 10 / 2.2 20 20 1.000 x 970 x 2.500 140 400
2.000 MMS 10 / 3.2 30 30 1.450 x 970 x 2.500 180 600
3.000 MMS 10 / 4.2 40 40 1.900 x 970 x 2.500 230 800
3.700 MMS 10 / 5.2 50 50 2.350 x 970 x 2.500 250 1.000
4.500 MMS 10 / 6.2 60 60 2.800 x 970 x 2.500 280 1.200
5.200 MMS 10 / 7.2 70 70 3.250 x 970 x 2.500 300 1.400
6.000 MMS 10 / 8.2 80 80 3.700 x 970 x 2.500 320 1.600
 
3.000 MMS 19 / 2.2 40 40 1.000 x 1.820 x 2.500 230 800
4.500 MMS 19 / 3.2 60 60 1.450 x 1.820 x 2.500 280 1.200
6.000 MMS 19 / 4.2 80 80 1.900 x 1.820 x 2.500 320 1.600
7.200 MMS 19 / 5.2 100 100 2.350 x 1.820 x 2.500 360 2.000
9.000 MMS 19 / 6.2 120 120 2.800 x 1.820 x 2.500 400 2.400
10.500 MMS 19 / 7.2 140 140 3.250 x 1.820 x 2.500 450 2.800
12.000 MMS 19 / 8.2 160 160 3.700 x 1.820 x 2.500 450 3.200

MMS ( Multiple Modul Serie ) HEPA filter unit cassette size: 610 x 610 x 292 mm

Filter capacity

m³/h 		Filter unit type


 Total filter area
stage 1
m² 		Total filter area
stage 2
m² 		Dimensions
W x D x H
mm 		Diameter
ductwork
mm 		Weight

kg 		Symbolic depiction
Front view – Side view
 
2.500 MMS 20 / 2.2 40 40 1.680 x 970 x 2.500 200 800
4.500 MMS 20 / 3.2 60 60 2.440 x 970 x 2.500 280 1.200
6.000 MMS 20 / 4.2 80 80 3.200 x 970 x 2.500 320 1.600
7.500 MMS 20 / 5.2 100 100 3.960 x 970 x 2.500 360 2.000
9.000 MMS 20 / 6.2 120 120 4.720 x 970 x 2.500 400 2.400
10.500 MMS 20 / 7.2 140 140 5.480 x 970 x 2.500 450 2.800
12.000 MMS 20 / 8.2 160 160 6.240 x 970 x 2.500 460 3.200
 
6.000 MMS 40 / 2.2 80 80 1.680 x 1.820 x 2.500 320 1.600
9.000 MMS 40 / 3.2 120 120 2.440 x 1.820 x 2.500 400 2.400
12.000 MMS 40 / 4.2 160 160 3.200 x 1.820 x 2.500 450 3.200
15.000 MMS 40 / 5.2 200 200 3.960 x 1.820 x 2.500 500 4.000
18.000 MMS 40 / 6.2 240 240 4.720 x 1.820 x2.500 560 4.800
21.000 MMS 40 / 7.2 280 280 5.480 x 1.820 x 2.500 630 5.600
24.000 MMS 40 / 8.2 320 320 6.240 x 1.820 x 2.500 650 6.400

MMS ( Multiple Modul Serie ) HEPA filter unit cassette size: 762 x 610 x 292 mm

Filter capacity

m³/h 		Filter unit type


 Total filter area
stage 1
m² 		Total filter area
stage 2
m² 		Dimensions
W x D x H
mm 		Diameter
ductwork
mm 		Weight

kg 		Symbolic depiction
Front view – Side view
 
3.000 MMS 24 / 2.2 48 48 1.984 x 970 x 2.500 230 860
5.400 MMS 24 / 3.2 72 72 2.896 x 970 x 2.500 320 1.290
7.200 MMS 24/ 4.2 96 96 3.808 x 970 x 2.500 360 1.720
9.000 MMS 24 / 5.2 120 120 4.720 x 970 x 2.500 400 2.150
10.800 MMS 24 / 6.2 144 144 5.632 x 970 x 2.500 450 2.580
12.600 MMS 24 / 7.2 168 168 6.544 x 970 x 2.500 460 3.010
14.400 MMS 24 / 8.2 192 192 7.456 x 970 x 2.500 500 3.440
 
7.200 MMS 48 / 2.2 96 96 1.984 x 1.820 x 2.500 360 1.720
10.800 MMS 48 / 3.2 144 144 2.896 x 1.820 x 2.500 450 2.580
14.400 MMS 48 / 4.2 192 192 3.808 x 1.820 x 2.500 500 3.440
18.000 MMS 48 / 5.2 240 240 4.720 x 1.820 x 2.500 560 4.300
21.600 MMS 48 / 6.2 288 288 5.632 x 1.820 x 2.500 630 5.160
25.200 MMS 48 / 7.2 336 336 6.544 x 1.820 x 2.500 710 6.020
29.000 MMS 48 / 8.2 384 384 7.456 x 1.820 x 2.500 800 6.880

MMS ( Multiple Modul Serie ) HEPA filter unit cassette size: 915 x 610 x 292 mm

Filter capacity

m³/h 		Filter unit type


 Total filter area
stage 1
m² 		Total filter area
stage 2
m² 		Dimensions
W x D x H
mm 		Diameter
ductwork
mm 		Weight

kg 		Symbolic depiction
Front view – Side view
 
3.500 MMS 28 / 2.2 56 56 2.290 x 970 x 2.500 250 920
6.300 MMS 28 / 3.2 84 84 3.355 x 970 x 2.500 360 1.380
8.400 MMS 28 / 4.2 112 112 4.420 x 970 x 2.500 400 1.840
10.500 MMS 28 / 5.2 140 140 5.485 x 970 x 2.500 450 2.300
12.600 MMS 28 / 6.2 168 168 6.550 x 970 x 3.200 480 2.760
14.700 MMS 28 / 7.2 196 196 7.615 x 970 x 2.500 500 3.220
16.800 MMS 28 / 8.2 224 224 8.680 x 970 x 2.500 560 3.680
 
8.400 MMS 56 / 2.2 112 112 2.290 x 1.820 x 2.500 400 1.840
12.600 MMS 56 / 3.2 168 168 3.355 x 1.820 x 2.500 450 2.760
16.800 MMS 56 / 4.2 224 224 4.420 x 1.820 x 2.500 560 3.680
21.000 MMS 56 / 5.2 280 280 5.485 x 1.820 x 2.500 630 4.600
25.200 MMS 56 / 6.2 336 336 6.550 x 1.820 x 2.500 710 5.520
29.400 MMS 56 / 7.2 392 392 7.615 x 1.820 x 2.500 800 6.440
33.600 MMS 56 / 8.2 448 448 8.680 x 1.820 x 2.500 830 7.360