Off-Shore Platform Glycol Dehydration

Problem

Contamination entering a 3000-7000 L glycol reservoir from a 32 km pipeline had high levels of contamination as a result of pipeline corrosion. The contamination would degrade new glycol and reduce it’s ability to cool and remove moisture from gas. Corrosion of the carbon steel piping would cause contamination build-up during transmission and storage. The glycol system was unmanned and required a low maintenance filtration solution with minimal changeouts.
During the dehydration phase, if the temperature of the glycol is volatile (this occurs when high levels of iron are present), the likelihood of vaporization loss increases, resulting in lost production.

Solution

Install a Magnetic Separator after the reservoir to improve glycol quality.

Results

Analysis of contamination collected on the magnetic element showed 74% nonferrous particles and 26% ferrous. The glycol quality was significantly improved with minimal maintenance requirements.