An apparatus for scrubbing a gas in which a vortical flow of a gas and liquid mixture created by an entrainer is emitted from the entrainer and is introduced into a de-entrainer through a guide/deflector assembly. Particulate is removed from the gas and is picked up by the liquid. The de-entrainer separates the liquid from the gas and delivers the scrubbed gas to an outlet. The guide/deflector assembly guides the vortical liquid/gas flow from the entrainer to the de-entrainer and diverts most of the droplets away from the de-entrainer to significantly reduce the amount of liquid droplets entrained in the gas preparatory to entry into the de-entrainer, significantly reducing the amount of droplets emitted with the scrubbed gas. The vane cages of the entrainer/de-entrainer assemblies are designed so that the height to diameter (H:D) ratio is ##EQU1## to increase the operating range.