Key words: supercritical carbon dioxide, oil and operational contaminants in pipelines
This article presents an environmentally friendly and cost-effective system for cleaning oil and operational contaminants from marine pipelines using supercritical carbon dioxide as a solvent. A process flow diagram for cleaning oil contaminants from pipelines with a cleaning efficiency of up to 97 % is described. Using a pi peline cleaning system using supercritical carbon dioxide as a cleaning agent simplifies the process of cleaning the internal surfaces of pipelines of various lengths, diameters, and configurations, significantly reduces repair and restoration time, reduces labor intensity, minimizes liquid oil-containing waste generated during cleaning, and reduces the material and energy costs of processing it.