Many industrial processes generate mineral oil mist. Current control technologies focus only on removing the mist droplets from the air. However, if these droplets evaporate, the vapor can pass through a collector designed to remove droplets alone. The purpose of this study was to determine the extent of evaporation for mineral oil droplets introduced to a mist collection system. After the system was loaded with mist, additional vapor samples were taken without mist injection to determine the amount of evaporation from mist-loaded collector components.
Many industrial processes generate metalworking fluid mists.
Recent studies have shown that these metalworking fluids will evaporate in mist form. If these droplets do evaporate, they will pass through a collector designed to capture droplets alone. Vapor was sampled using activated carbon upstream and downsteam from the collector as high concentrations of mist were generated upstream of the collector. After the system was loaded with mist, additional vapor samples were taken without mist injection to measure evaporation of droplets retained on collector components. Vapor concentrations measured as room air passed through mist-loaded collector components were greater downstream than upstream of the collector for both laboratory and field collectors.