Alfa Laval explains how PureVent cleans crankcase gas from diesel engines
Crankcase emissions cause environmental and health problems. Alfa Laval PureVent 2.0 is a gas separator for medium-speed combustion engines that cleans crankcase gas. PureVent 2.0 is a radical new approach to cleaning the gas vented from engine crankcases by using centrifugal separation technology to remove oil mist and other particles, and help protect the environment.
The PureVent separator unit is a compact installation that consists of a stack of 185 rotating discs made from a special composite lightweight polymer, enclosed in an aluminium housing. This disc stack is driven by an electric motor. Uncleaned crankcase gas enters at the bottom of the separator, and then passes into the stack of rotating discs. Centrifugal force presses any oil or soot out between the discs, making it collect on the inside of the disc stack housing. This leaves air that is virtually oil-free, and can be responsibly released into the atmosphere.