January 2000

Loss Prevention/Process Technology

Improve liquid/gas coalescer performance

Using surface treatment for coalescer media, separator drainage capabilities can be significantly increased

Wines, T. H., Pall Corp.

Separating liquid aerosol contamination with high-efficiency liquid/ gas coalescer systems is widely accepted in refinery and gas plants. Many such applications include protecting compressors, turbo equipment, burner nozzles, amine and glycol contactors, molecular sieve beds and hydrotreater catalyst beds.1–3 HPI operators were largely dissatisfied with traditional separation approaches – knock-out vessels, centrifugal separators, mesh pads or vane separators that did not meet the requirements for aerosol reduction. Consequently, high-efficiency coalescers are installed in processes in which significant aerosol contaminant are required at the sub-micron and low micron range.4 High-

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