FEA International

Metal Filter Elements

There are 3 fundamental physical states:

solid
liquid
gas

And a certain number of intermediary physical states such as paste.

Any pure body can be in any one of these states, depending on the physical and chemical properties of the ambient environment.

One of the important functions of industrial activity is that of separating the constituent phases of a mixture in order to eliminate or collect one or more of them.

Once the filtration processes have been previously selected and installed, the filter element may be studied, replaced or modified. The following essential parameters should be taken into consideration:

1 ) Fluid:

Physical properties: temperature, viscosity, density, etc.
Chemical properties: acid, base, salt

2) Dispersed phase:

Nature
Particle dimensions
Concentration

3) Flow:

Flow rate
Loss of maximum allowable charge
Desired filtration threshold
Frequency and type of de-clogging

“Knowledge of these factors enables the material, the filter surface and the design of the filter element to be determined.”

Metal Baskets

Materials: stainless steel 304L or 316L or special alloys
Max. differential pressure: 10 bars on request
Temperature: max. 450�C.
Configuration: Pleated or non Pleated, inline on demand
Flask sealing: glue or argon weld
Filtration thresholds: 5�m - 5mm

Applications: high water flow rates , pump protection, cooling towers, liquid natural gas, diesel, crude oil, etc.

Metal Cartridges

Materials: metal canvas in stainless steel 304L or 316L or special alloys on demand.
Max. differential pressure: up to 10 bars
Temperature: max 450�C
Configuration: Pleated or non Pleated
Flask sealing: glue or argon weld
Filtration thresholds: 5�m - 2 mm

Applications: refining products, lubricating oil, essential oils, chemical products, gas, hot polymers, paint, liquid foods …

Sintered Metal Cartridges

Material: stainless steel 304L , 316L or special alloys
Temperature: max 400�C
Filtration thresholds: 1�m to 60�m

Applications: High temperature; catalyst recuperation; viscous fluids; polymer filtration;

Coalescer / Separator Pads

The pads are formed from juxtaposed elements enabling them to be inserted via manholes. They may be square, rectangular, circular, ring-shaped or elliptical and are perfect for installations of all sizes. Each element of the pad can be delivered with support grids.

The choice is made depending on the following:

Desired efficiency
Allowable loss of charge
Droplet size
Viscosity and the entrainment rate of the liquid phase
Gas flow rate variations
Dust content
etc.

Applications: Liquid and gas filtration - devesiculation; extraction; absorption; in refinery; petrochemistry; agroprocessing industry; fine chemistry, etc.

Unlimited sizes and shapes.
Low loss of charge
High volumetric surface area relative to the specific weight
Static operation

Metal Inserts

Made from spiral-rolled strips of metal canvas or embossed knits, the inserts are reserved for small installations. They are supplied on demand with support grids.

Applications: Distillation columns, absorbers, gas scrubbers, purifiers, extractor drums, depressurisation vases.

Unlimited sizes and shapes.
Low loss of charge
High volumetric surface area relative to the specific weight
Static operation

Support Grids

The metal mesh that forms the Eliminator Knit is not a rigid material and must be supported. We produce custom-made support grids from the following metals:

Stainless steel AISI304L, 316L
MONEL
Soft galvanised steel, soft carbon steel
Special alloys, etc.

Applications: Any device requiring the introduction of fluids and gases

Distillation columns
Absorption columns

Non-Metal Filter Elements

The so-called “textile” filter element is manufactured according to specific selection criteria: the nature of the material of which it is made, the environment to which it must adapt, its behaviour on heating, its density, etc.

The environment could be:

Solvent
Acid
Base
Oxidant

The material:

Polypropylene
Polyester
Polyamide
Acrylic
Cotton

Different qualities of material are used depending on the application, since the chemical, physical and mechanical properties of each material are different and appropriate to specific filtration criteria, as a result.

The construction of the filter element varies and a wide range is available.

Cartridges

A complete range of filter cartridges is available.

The categories of disposable cartridges depend on the following:

1. Type of Material: Polypropylene, nylon, polypropylene + fibreglass
2. Epoxy Impregnation: hydrophilic PVDF, hydrophobic PVDF
3. Retention threshold in �m from 0.3 �m to 200 �m
4. Support layers polypropylene or polyester
5. Core: polypropylene, stainless steel, nylon
6. Weld method: heat welded or not
7. Caps: polypropylene, polyester, nylon
8. Joints: Viton, EPDM
9. Dimensions: length X diameter

Applications: very highly viscous products, resins, inks, chemistry, petrochemistry, contaminant liquid, industrial water...

Canvases and Sub Canvases

The canvases and sub canvases are supplied to measure for equipment such as: press filters, rotary filters, disc filters, belt filters, Kelly filters, spinner, and centrifuge, etc.

The dimensions must be defined in advance in your request, indicating the following:

1 - Width, length, distance and diameter of the hole; tray thickness; sleeve dimensions, etc. 2 - Type of material used 3 - The environment in which they are to be used.

Spheres of application: refinery; chemistry; water treatment; agroprocessing industry, etc.

Filter Pockets

Felt Filter Pocket sharpness, heat resistance up to 240�C depending on the material nominally from 1 to 200�m, high-viscosity products, paints, resins, chemistry, petrochemistry, industrial water, pump protection, agroprocessing industry.

Monofilament Filter Pocket; Material polypropylene, polyester, nylon, PTFE; heat resistance up to 250�C; from 1200�m; applications: very high-viscosity products, resins, inks, chemistry, petrochemistry, pump protection, industrial water, etc.

High Performance Pocket; applications: fine chemistry, contaminant liquid, gel, gelatine, drinks, …. heat resistance at 90�C.

These are available with a moulded plastic or metal ring.