Abstract: A process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases is disclosed. The process includes driving the carrier gas through a conduit, in part by a fan or blower, passing the carrier gas through a turbulent free jet emitted from a supersonic nozzle and containing a large number of small high velocity liquid droplets, passing the mixture of the carrier gas and the free jet through a subsonic nozzle, injecting additional liquid as droplets into the mixture, retaining the mixture in a mixing tube to promote the further growth of the liquid droplets and separating the liquid droplets from the carrier gas.