Tutorial: The Fundamentals of Fouling in the Acid Gasremoval System and Fractionation Train

This tutorial presentation reviews the fundamentals of process-side fouling in an ethylene unit’s acid gas removal system and fractionation train. The general mechanisms of fouling are first discussed, with a particular focus on differences between liquid- and gas-heavy feed slates. Common techniques for anticipating and monitoring the fouling of equipment are then presented. Finally, an assortment of proven ways to mitigate fouling – equipment design, process treatment, operational adjustments, and maintenance practices – are discussed.