Abstract: Process and apparatus are disclosed for the treatment of flue gases to remove particulates, sulfur oxides, hydrogen sulfide and organic sulfur compounds using an alkaline scrubbing liquor containing activated carbon.

Abstract: A process is disclosed for the treatment of flue gases to remove acid gases, boron compounds and particulates.

Abstract: A process is disclosed for the large-scale abatement of acid gases in hot industrial effluent gas streams. In a first stage, the proportion of acid gases in a hot gas stream containing a relatively high initial concentration of acid gases is substantially reduced by contacting the gas stream with an aqueous solution or slurry of a basic material capable of reacting with the acid gases under such conditions that a dry salt is left as the reaction product. In subsequent steps, particulate material and residual acid gases are removed from the gas stream either: 1) by introducing into the gas stream a particulate material capable of sorbing acid gases followed by a particulate removal step; or, 2) by using a wet scrubber.

Abstract: An essentially adiabatic process for the crossflow scrubbing of particulate material from a gas is disclosed in which the scrubbing liquid is recirculated without cooling. By a combination of a minimum gas temperature of about 150.degree.F., saturation conditions, and a certain amount of turbulence, it has been found possible to achieve particulate nucleation prior to passage of the gas through the scrubber units which, in turn, makes it possible to recycle the scrubbing liquid while maintaining it at a substantially constant temperature.