The generic word ‘filtration’ can encompass many applications across a wide range of industries, the majority of which can be served by the commonly available filter media where process temperatures are low and / or the environment inert.

It therefore takes a very special medium to tackle the difficult and unusual conditions found in today's chemical, petrochemical or general process industries.

FFSL solves these difficult problems by supplying porous ceramic media that are chemically inert, stable and available in a variety of controlled and special grades, with temperature capabilities of up to 900ºC.
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Gas and Air Filtration

FFSL has many years experience in the manufacture and selection of ceramic filters for gas/air filtration. Our range of Porous Ceramic elements and filter units meet industrial demands for an effective and highly efficient filter to remove solids and traces of free oil and water from compressed air, gas lines and industrial processes. The following table shows the retention capability for specific ceramic grades:

Key Features

	Efficiencies: a wide range of efficiencies with pore structures to give filtration from 0.3 to 100 micron.
	Sterile Air: with an efficiency of 99.999% at 0.3 micron.
	Coalescing: with specially treated ceramic for removal, by impingement, of liquids such as oil and water from air and gas streams.
	Hot Gases: materials are available with special properties to resist thermal shock.
	Environments: suitable for aggressive and corrosive applications.

Liquid Filtration

Liquid filtration is presented with similar problems to air and gas when faced with high temperatures and aggressive acidic conditions. Ceramic elements prove to be reliable and cost effective solutions to removing solids from water, chemical and petrochemical products, and other processes. The same features that benefit air and gas apply to liquid but with slightly differing filtration characteristics. The following table shows the retention capability for specific ceramic grades:

Key Features

	Support Structure: for either filter bag/sleeves or a precoat filter medium.
	Chemical Compatibility: suitable for the filtration of aggressive liquids, including alkaline solutions and many acids.
	High Mechanical Strength: to withstand high differential pressures and in-situ back flushing

General Features

	Controlled pore size
	Controlled porosity and permeability
	Coalescing capability
	Chemically inert - can handle acidic gases
	High Temperature capability to 900ºC
	Range of standard element sizes
	Low cost of ownership

	Hot Gas Filtration
	Precoat Filtration
	Coalescing Filtration
	Process Filtration
	Dust and Fume Filtration
	Compressed Air Filtration
	Dust and Fume Filtration

Available Ceramic Filter Media

FFSL has a range of standard ceramic materials. Each has its unique characteristics and capabilities. The materials used most commonly are Pyrolith and Coralith.

Chemical Composition

Trace Elements

Coralith

Aluminosilicate particles bonded by glass. Coralith can withstand hot and cold acids (not hydrofluoric acid or acid fluorides), alkaline solutions up to pH9 and hot gases up to 900°C.

Chemical Composition

Trace Elements
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Typical Filtration Tube Sizes

FFSL has a range of standard ceramic elements. These can be fitted into our range of Aerox filter units or custom manufactured for inclusion into existing or purpose built customer housings.

Specific sizes are available on request but vary from 114mm long x 29mm OD x 13mm ID to 1000mm long x 70mm OD x 40mm ID.

Typical Flow versus Pressure Drop Charts
(For Ceramic Element Grade Number)