Home » AIR TREATMENT

AIR TREATMENT

FILTRATION

 

 

…providing complete filtration solutions

We have a vast range of filtration experience enabling us to provide innovative and cost effective solutions for all your filtration requirements. Airtec  commitment to service is reflected in our comprehensive before and after sales service. Our  assistance extends to on-site evaluations,  quality control and ongoing support long after the filters are installed.

We supply the best products for you, when and where you need them. ,

Airtec  specialises in the  supply of high quality products for the clarification, stabilisation and sterilisation of liquids and gases, providing full scaleability from membrane flat stock discs to multi-element filter systems. Each filter range has been specifically developed for industry requirements. We have a vast range of filtration experience enabling us to provide innovative and cost effective solutions for all your filtration requirements.

AIRTEC  commitment to service is reflected in our comprehensive before and after sales service.

 

We have a vast range of filtration experience enabling us to provide cost effective solutions for all your filtration requirements. We have the capability of work across application areas including:

  • Biopharmaceutical
  • Beverage
  • Chemical
  • Electronics
  • Fermentation
  • Food and Dairy
  • Healthcare and Cosmetics
  • Hospitals
  • Paints and Inks
  • Petrochemical

STERILE AIR

 

AIRTEC  offers pleated cartridge filters and advanced design wrapped filters that utilise high technology PTFE impregnated media. The filters can be tested using a simple aerosol technique that is correlated to bacterial and bacteriophage retention. The ability to test these filters fits well into both quality and HACCP frameworks.

Cost effectiveness and a proven track record of maintaining integrity following very aggressive steam cycles mean that glass microfibre depth filters become the filter of choice for the majority of applications in the dairy industry. However filters incorporating PTFE membranes are also used in some instances.

  • Filters validated for both live aerosol bacterial challenge and bacteriophage challenge.
  • Complete range of retrofits available
  • Unique choice of PTFE membrane or hydrophobic depth media
  • All products meet recommended 3-A sanitary standards 604-05
Bio-X II
BIO-X II air sterilisation filter cartridges utilise a borosilicate glass microfibre media. This media has proven to be particularly effective in the removal of sub-micron particles as small as 0.01 micron, therefore ensuring the removal of all micro-organisms including bacteria and viruses.
High Flow Bio-X
HIGH FLOW BIO-X combines proven depth filter technology and a pleated construction to provide retention down to 0.01 micron in gas.
High Flow Prepor GFA
HIGH FLOW PREPOR GFA is a high capacity glass fibre prefilter specifically designed for the removal of bulk particulate from compressed air and gases.
High Flow Tetpor II
HIGH FLOW TETPOR II gas sterilisation filters have been developed to benefit from technological advances within the manufacture of PTFE membranes. This new generation of filter sets the standard with an unrivalled combination of efficiency, flow rate and strength.
Peplyn Air
PEPLYN AIR filter cartridges have been specifically designed to guarantee removal of particulate from gas streams.
Valairdata II
The most efficient test for sterile gas filters

DAIRY

Access to new geographic markets can now be made logistically and commercially viable through extended shelf life (ESL) technology. This is only possible through promoting high standards of hygiene throughout the dairy from reception to final packaging. Contamination via organisms in both air and water, remain a real concern in the modern dairy.

Supported by our team of sales application engineers, technical support ,  our challenge is to add value to your process by constantly reviewing and adapting to meet your changing goals, in terms of performance and ever changing industry regulation.

COMPRESSED AIR

Management of compressed air falls into three main categories:

 

  • Effective removal of all contamination in the form of dirt, oil, water and microorganisms.
  • Minimising pressure losses between the compressor and the point of application.
  • Eliminating losses from the system due to leaks, uneconomical regeneration of drying plant and inefficient condensate drains.

 

  AIRTEC offers unrivalled expertise in the purification of compressed air and works in partnership with many of the world's leading compressor manufacturers. In order to explain the various forms of compressed air treatments domnick hunter has published a guide to ISO 8573.1:2001 Air Quality Classes. This provides an in-depth guide to identifying the air quality that best suits the needs of different applications.

 

  • Easy to understand guide to air quality classes.
  • Filters for coalescing aerosols oil from the compressed air stream.
  • Range of desiccant and refrigeration dryers to suit varied needs.
  • Sterilising filters for high pressure (compressor) lines.
  • Sterilising filters for low pressure (blower) applications.

 

AIR QUALITY

 Compressed Air Quality to ISO 8573.1 : 2001 (E)

The International Standard for compressed airquality introduces a simple system of classification for for the three main contaminants present in any compressed air system - DIRT, WATER and OIL. To specify the quality class required for a particular application, simply list the class for each contaminant in turn. For Example:
Compressed air to Quality Class: 2.2.2. (Dirt: 1 micron. Water: -40°C PDP. Oil: 0.1 mg/m3)

ISO8573.1 : 2001 (E)
QUALITY CLASSSOLID PARTICLES
maximum number of particles per m3		WATER Pressure Dewpoint °C (ppm. vol.)
at 7 bar g		OIL
(Including vapour)
mg/m3
0.1-0.5 micron0.5-1.0 micron1.0-5.0 micron
1 100 1 0 -70 (0.3) 0.01
2 100,000 1,000 10 -40 (16) 0.1
3 - 10,000 500 -20 (128) 1.0
4 - - 1,000 +3 (940) 5
5 - - 20,000 +7 (1240) -
6 - - - +10 (1500) -

Filter Grades

GRADE PF
Coarse Pre-Filtration. Particle removal down to 25 microns.

GRADE AO
High Efficiency General Purpose Protection. For the removal of particles down to 1 micron including coalesced liquid water and oil, providing a maximum remaining oil aerosol content of 0.5 mg/m3 @ 21°C.

GRADE AA
High Efficiency Oil Removal Filtration. For the removal of particles down to 0.01 micron including water and oil aerosols, providing a maximum remaining oil aerosol content of 0.01 mg/m3 @ 21°C. (Precede with Grade AO filter).

GRADE AX
Ultra High Efficiency Filtration. For the removal of particles down to 0.01 micron including water and oil aerosols, providing a maximum remaining oil aerosol content of 0.001 mg/m3 @ 21°C. (Precede with Grade AO filter).

GRADE AC & ACS
Activated Carbon Filtration. For the removal of oil vapour and hydrocarbon odours giving a maximum remaining oil content of3(

GRADE AR
General Purpose Dust Filtration. For the removal of dust particles down to 1 micron.

GRADE AAR
High Efficiency Dust Filtration. For the removal of dust particles down to 0.01 micron.

General Purpose Protection

(Air Quality to ISO 8573.1: Class 2.-.3)

  • General Ring Main Protection
  • Liquid and Solid - Bulk Contamination Removal
  • Particle Removal Only in ‘Dry Systems’
  • Large Pneumatic Tools
  • Low Cost Automation
  • Pre-Filtration for Refrigeration Type Air Dryers
  • Pre-Filtration to High Efficiency Filters (Grade AA)
  • Pre-Filtration to Adsorption Type Air Dryers in ‘Oil Free’ Systems
  • Pre-Filtration to Air Sterilisation Filters in ‘Oil-Free’ Systems

'Oil-Free' Air

(Air Quality to ISO 8573.1: Class 1.-.2)

  • ‘Oil-Free' Air
  • Robotics
  • Air Logistics
  • Fine Pneumatic Tools
  • Instrumentation
  • Spray Painting
  • Air Gauging
  • Air Conveying
  • Air Bearings
  • Air Motors
  • Pipeline Purging
  • Temperature Control Systems
  • Pre-Filtration to Adsorption Type Air Dryers in Oil Contaminated Systems

Critical Applications

(Air Quality to ISO 8573.1: Class 1.-.1)

  • Highest Quality - Clean, Oil and Odour Free Air
  • Breathing Air (Not when CO/CO2 removal required, see our Breathing Air Purifiers)
  • Blow Moulding of Plastics e.g. P.E.T. Bottles
  • Film Processing
  • Critical Instrumentation
  • Advanced Pneumatics
  • Air - Blast Circuit - Breakers
  • Decompression Chambers
  • Cosmetic Production
  • Foodstuffs Production/Packaging
  • Dairies Production/Packaging/Transport
  • Breweries Production/Packaging/Transport
  • Pre-Filtration to Air Sterilisation Filters in Oil Contaminated Systems

Reduced Dewpoint System

(Air Quality to ISO 8573.1: Class 1.4.1)

Where dewpoint is not required to be less than 3-10°C.

Extremely Low Dewpoint System

(Air Quality to ISO 8573.1: Class 1.1.1 and 1.2.1)

Where totally dry compressed air is required dewpoint between -40°C and -70°C. To stop corrosion from compressed air at 20°C and 7 bar g. A -30°C DP is the minimum requirement.

Terminal Filtration


*Where no main line filters are fitted or where the length of the pipe from the main filters is excessive. Grade AO pre-filters should be installed before the filters shown.

  • Spray painting booths
  • Breathing air
  • Advanced pneumatics
  • Instrumentation
  • Blow guns
  • Measuring equipment
  • Gauging equipment
  • Hand tools

Installation Hints

1. Generally install filters downstream of aftercoolers and air receivers at the lowest installation temperature and as close to the point of application as possible This ensures that in wet systems as much water and oil vapour has condensed out as possible which can be removed by the coalescing filters. Installing close to the application reduces the risk of pipe scale downstream or the filters contaminating the filtered air. Please refer to above installation hints.

2. Filters should not be installed downstream of quick opening valves and should be protected from possible reverse flow or other shock conditions.

3. It may he necessary to install a combination of main line filtration near the compressor installation before entry to the ring main and install terminal filtration at the critical points. Remember especially in existing installations the contamination already in the pipe system downstream of the filters will take a long time to disappear and probably never will completely.

4. Purge all lines leading to the filters before installation and connection to the final application to be protected

5. Install filters in a vertical position ensuring that there is sufficient room below the filters to facilitate element change.

6. Avoid by-pass lines whenever possible as contamination may leak through valves and by-pass the filters.

7. Provide a facility to drain away collected liquids where applicable from the filter drains via suitable tubing taking care that no restrictions are caused.

8. Install  differential pressure gauges and kits to indicate the pressure drop across the filters. This will give an idea of the filter element condition (except Grade AC or ACS).

9. domnick hunter mounting kits are available for filter sizes up to 0620G. Care should be taken with larger filters to see that they are properly supported in the pipe line.

10. If you have a problem on filter selection or installation please contact AIRTEC  Technical Sales Department or our representatives We will be pleased to help you in selecting the installation for your requirements.