Lechler mist eliminators are made as a baffle vane separator design. This curved design allows for primary separation and secondary separation of the mist particles from the gas flow. For the primary separation, droplets larger than the limit droplet diameter, such as bigger than three microns, become trapped as the liquid film. The secondary separation method captures mist particles that are smaller than the limit droplet size.
There are two designs to mist eliminators: horizontal separation vanes and vertical separation vanes. The horizontal separation vanes are typically used for when the gas flow moves horizontally. The vanes are placed vertically as gravity is used to move the collected liquid mist film downward. The shape of the baffle vane maximizes liquid film collection without reducing gas flow pressure.
Vertical separation vanes are used when the gas flow travels upward. The baffle vane is placed horizontally or at a horizontal angle that points slightly downward. The liquid film collected from the mist travels down in the opposite direction of the upward-moving gas. These types of vanes are suitable when dealing with larger droplet sizes that won't go back into the gas flowing past the collected particles.