Pall Gas Coalescence&Separation Filter CC3LG7AH13
Preconditioning of the Fluid
Pall recommends a pre-filter to minimize solids in the coalescer influent that can plug the coalescer, reducing the
overall life and efficiency. The pre-filter provides peak performance of the coalescing system and a lower total
cost of ownership.
Coalescence of the Dispersed Phase
Pall high-efficiency coalescers merge small droplets of liquid into larger ones as the fluid stream passes through
several layers of filter media, each with progressively larger pores. As droplets compete for the open pores, they
coalesce forming larger droplets. These larger droplets are easier to separate from the continuous phase fluid.
The coalescer size and type are determined by numerous factors: physical properties of the fluid, flow rate, process
conditions and chemical compatibility with process fluids and additives.Pall has the expertise and capability to determine
the correct coalescer size and type for your specific process parameters.
Separation of the Dispersed Phase from the Continuous Phase
Once large droplets are formed, they have to be separated. In gas systems, Pall spaces the cartridges to control the exit
velocity of the gas so that coalesced droplets are not entrained in this stream.
Filtration: solid particles are removed from the fluid stream by the filter medium.Coalescence: small droplets are merged
into larger ones as they pass through several layers of filter media in the coalescer.Separation: gravity takes effect, the
large droplets are separated from the product fluid stream.
In liquid/liquid systems, depending on the liquid to be separated, Pall will provide a separator cartridge which has "repelling"properties toward the coalesced liquids. Alternatively, the assembly can be designed to allow time for the coalesced liquid to settle.When Pall works with you in all three phase separation steps, the result is greater process efficiency and reduced
operating and maintenance costs.
Comparison of Liquid/Gas Separation Equipment
The table below compares the various equipment available for removing aerosols. Only Pall SepraSol coalescers effectively
remove aerosols smaller than one micron.
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