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Principles of Filtration |
Presented by: Pall Hydrocarbon, Chemical and Polymer Group
Brief Summary:
Filters play an important role in any industrial society. Filtration is the separation of particles from a fluid (liquid or gas) by passage of that fluid through a permeable medium. When the particles represent a significant proportion of the fluid, the process may be described as bulk solids collection. When the particles represent only a very small proportion of the total (0.01% or less), the process is called fluid clarification.
In most cases, Pall filters are used to remove particles ranging in size from fractions of a micrometre to 40 plus micrometres. The smallest pencil dot that can be seen by the unaided eye is approximately 40 micrometres in diameter. For those who think in terms of the metric system, a micrometre is 1/1000 of a millimetre which is approximately one twenty-fifth of an inch.
This paper will explore filtration processes, filter types, removal ratings, and choosing the proper filter.
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