Oil-Removal Coalescers: Why Every Gas Compressor Discharge Needs One

7 hours ago

2 min read

At a glance. Every lubricated compressor carries some oil into the gas it delivers, as fine aerosol and droplets. That oil fouls meters, membranes, catalysts, analysers and fuel-cell users downstream. The Tech Inc. High-Pressure Oil-Removal Coalescer Skid stops it at the compressor discharge, at full line pressure. For CNG, hydrogen and process-gas stations it is one of the best investments they can make.

How it works

A pre-filter removes bulk liquid and solid particles.
A coalescing element collects fine oil aerosol into droplets, which drain to the bottom of the housing.
Automatic or manual drains send the collected oil to a closed drain pot.
Differential pressure gauges on each housing show when an element needs changing.

Versions

Version	Use
Single-stage coalescer	Clean services with low oil carry-over
Two-stage skid	Particle pre-filter followed by a high-efficiency coalescer
Duty/standby skid	Element changes without stopping the compressor
Polishing version	Adds activated carbon for oil vapour

Why it is one of the best things to happen to compressed gas

Protected downstream equipment. Dispensers, meters, membranes and catalysts stay free of oil.
Rated for the duty. Housings designed for the compressor discharge pressure, including high-pressure CNG and hydrogen service.
No unplanned stops. Duty/standby trains allow element changes on line.
One supplier. Replacement coalescer elements come from the same maker as the housings.

Where it is used

CNG and hydrogen refuelling compressors, process gas compressors, gas injection and booster packages, and instrument and fuel gas after compression. It pairs with a seal gas conditioning skid and a compressor suction scrubber on the same machine.