Cartridge filters with capacity from 2000 to 20000 m3/h, filters for silos

Cartridge filters with capacity from 2000 to 20000 m3/h, filters for silos

Cartridge filters

Application

Cartridge filters are used for dedusting of an aspirated air, formed at various processes in power engineering, metallurgy, at pouring of bulk materials, in joiner's and wood-working manufactures etc.

Cartridge filters, manufactured by Ltd. Aspex engineering company can be produced in special configuration, for operation with explosion/fire hazard gases and dust.

The operating temperature of a filtrated gas, steam or air should not be close to dew-point.

Description of Operation

The gas containing solid contaminant, passing through the ingate, divides into several flows and enters the output channel. Further gas reaches the bin, where large dust particles settle under the action of a gravitational force. Polluted air goes upward into the filter case to the vertically suspended filtering bags. Passing through them into the chamber of pure gas, gas is being filtrated. From the chamber of pure gas, through the ingates, gas reaches the output channel and then leaves the filter.

Passing through filtering bags, dust particles are caught on their external surfaces and form continuous dust layer which is regularly eliminated by pulsing regeneration. Regeneration is carried out by short (150 ms) pulses of a compressed air, which is fed inside the filtering elements from the holes of the blow-down pipe. Under the action of compressed air pulse on inner side tearing-off of the precipitated dust layer from an external bag surface occurs. Dust drops into the discharge hopper, then dust is removed from the filter through a lock feeder. Regeneration, namely frequency and length of a pulse, is provided by the high-perfgormance diaphragm valves which are controlled with the help of regeneration control unit through solenoid valves. The regeneration mode can be adjusted for two kinds of operation: regeneration by differential pressure and regeneration by timer. All system is carried out on the basis of Mecair components. For operation of the regeneration system the compressed air with pressure 5-8 bar without oil and mechanical impurities and also drained with a dew-point -40 °C is needed.

For the cartridges the filter fabric of leading world manufacturers (BWF, Keiser) is used.

Automatic Filter Control System

The filter is supplied with an automatic control system (programmable automatic device - PLC). Given arbitrarily programmable automaton, carried out on the basis of Siemens components, allows control of all the filter modules. This system controls:

  • regeneration of filtering bags;
  • system of the dust emptying;
  • heating of bins;
  • system for preventing of the dust hanging in the bin.

 

Automatic control system also provides necessary blocking, informs about operation parameters and emergency states of the filter operation. System continuously represents a differential pressure at the input and output of the filter. Value of the differential pressure of the bags defines level of the cloging filter. Optimum value of a differential pressure is within the range of 1200 Pa.

On client request control system allows control of operation of the smoke exhauster, representation of the basic technological parameters of its operation.

Control of all Aspex filters is designed according to demands of the chosen technology and for the purpose of achievement of optimum economic maintenance and full automation of the equipment operation. Control units allow unproblematic commutation with control system of the highest level.

Examples of products

Below examples of produced cartridge filters are presented

Cartridge Filters with Capacity up to 20 000 m3/h

Labelling

Surface of filtration, m2

Structural pressure, Pa

Specific gas load, m/min

Gas consumption

Number of filtering elements

Material of filtering elements

Number of modules

Overall dimensions without taking into account supporting structure (L×W×H)

max

min

min

max

min

max

Aspex 50-1-1500-И1

50

-10

-5

1

1,4

3000

4200

20

cellulose, polyester, polypropylene and their mixture

1

1120×1120×4191

Aspex 60-1-1500-И1

60

-10

-5

1

1,4

3600

5040

24

cellulose, polyester, polypropylene and their mixture

1

1320×1120×4191

Aspex 70-1-1500-И1

70

-10

-5

1

1,4

4200

5880

28

cellulose, polyester, polypropylene and their mixture

1

1520×1120×4191

Aspex 80-1-1500-И1

80

-10

-5

1

1,4

4800

6720

32

cellulose, polyester, polypropylene and their mixture

1

1720×1120×4191

Aspex 100-2-1500-И1

100

-10

-5

1

1,4

6000

8400

40

cellulose, polyester, polypropylene and their mixture

2

2350×1120×4191

Aspex 150-3-1500-И1

150

-10

-5

1

1,4

9000

12600

60

cellulose, polyester, polypropylene and their mixture

3

3450×1120×4191

Aspex 200-3-1500-И1

200

-10

-5

1

1,4

12000

16800

80

cellulose, polyester, polypropylene and their mixture

4

2350×2350×4191

Notes:
  1. Parameters of power consumption for all filters are presented without taking into account heating system of bins and systems of the dust emptying: 1000 Wt/400 V/ 50 Hz.
  2. Consumption of compressed air is determined due to dust level of aspirated air. Inlet pressure of a compressed air for regeneration system is 4-8 bar. Dew-point is -40 °C. Compressed air must not contain oil and mechanical impurities.
  3. Index i2 indicates a bag filter with dust-collecting bin and dust out-feed system on the basis of the double blinkenlights, rotary or swing valve.
  4. On demand, the filter fabric with additional surface treatment, diaphragm, microfiber impurities is possible.

Cartridge filters

 

 

 

 

 

Cartridge Filters for silos (silos, homogenizers, mixers, bins)

Labelling

Surface of filtration, m2

Structural pressure, Pa

Specific gas load, m/min

Gas consumption

Number of filtering elements

Material of filtering elements

Number of modules

Overall dimensions without taking into account supporting structure (L×W×H)

max

min

min

max

min

max

Aspex 50-1-1500

50

-10

-5

1

1,4

3000

4200

20

cellulose, polyester, polypropylene and their mixture

1

1120×1120×4191

Aspex 60-1-1500

60

-10

-5

1

1,4

3600

5040

24

cellulose, polyester, polypropylene and their mixture

1

1320×1120×4191

Aspex 70-1-1500

70

-10

-5

1

1,4

4200

5880

28

cellulose, polyester, polypropylene and their mixture

1

1520×1120×4191

Aspex 80-1-1500

80

-10

-5

1

1,4

4800

6720

32

cellulose, polyester, polypropylene and their mixture

1

1720×1120×4191

Notes:
  1. Parameters of power consumption for all filters: 1000 Wt/400 V/ 50 Hz.
  2. Consumption of compressed air is determined due to dust level of aspirated air. Inlet pressure of compressed air for regeneration system is 4-8 bar. Dew-point is -40 °C. Compressed air must not contain oil and mechanical impurities.
  3. Presented cartridge filters are packaged with smoke exhauster Elektor GFL 400.
  4. If needed filter fabric with additional surface treatment, diaphragm, microfiber impurities is possible.

Ltd. Aspex Engineering Company produces cartridge filters with capacity 100 000 m3/h and more.

Note!

There is no standard solution of the problem considering cleaning of the aspirated dusty air. Each case is unique in its own way and is needed detailed technical study; therefore Ltd. Aspex engineering company on principle has no catalogue for the given type of produced products. For solution of your problem we ask you to fill the questionnaire which you can download from this web site.

Learn more about local aspiration of dusts and gases.

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