Prevention of formation of fouling deposits on metallic surfaces.

摘要

A process for adding at least a neutralizing amine having a pKa of between 5 and 8 to a petroleum refinery distillation unit for the purpose of preventing the formation of fouling deposits on metallic surfaces. The use of these amines raises the dew point pH sufficiently to prevent corrosion of the metallic surfaces of the overhead equipment while reducing the potential for the precipitation of amine salts. <IMAGE>