Compressor Suction Scrubbers: The Simplest Way to Protect a Compressor

7 hours ago

2 min read

At a glance. Reciprocating and screw compressors are damaged by liquid slugs and droplets in the suction gas. A suction scrubber separates the liquid, drains it automatically and trips the compressor before a slug can carry over. The Tech Inc. Compressor Suction Scrubber Skid is one of the best investments a compressor station can make.

How it works

An inlet device slows the gas and drops out slugs.
A mist eliminator (wire mesh or vane pack) collects fine droplets.
A level transmitter opens the automatic drain valve as liquid collects.
A high-level switch trips the compressor before liquid can carry over.

Versions

Version	Use
Single scrubber	Compressor inlet
Interstage scrubbers	Between compressor stages
Scrubber with filter	Adds a filter or coalescer stage for fine liquids
Packaged with seal gas	Supplied with the compressor seal-gas skid

Why it is one of the best things to happen to a compressor

Machine protection. Valves, pistons and impellers see dry gas.
Automatic drains. No operator needed to empty the vessel.
Safe shutdown. The high-level trip stops liquid carry-over.
Sized to the duty. Vessel and mist eliminator are sized for the real gas flow.

Where it is used

Gas compressor suction and interstages, fuel gas systems, vapour recovery and gas gathering. Downstream of the compressor, our oil-removal coalescer skid cleans the discharge gas, and our seal gas conditioning skid protects the seals.