Abstract: A system for the removal of sulfur compounds from the flue gas from a high-sulfur coal combustion unit. The flue gas is contacted with a combination of a calcium hydroxide slurry and gaseous ammonia in a combined stoichiometric ratio which provides for near 100% utilization of the calcium hydroxide and ammonia with a sulfur dioxide removal efficiency approaching 100%. The system is useful in treating flue gas from high-sulfur coal combustion to remove the sulfur dioxide therefrom so that the flue gas can be exhausted to the atmosphere.

Abstract: A procedure for testing the efficiency of filtration media is disclosed. The procedure employs uniform microspheres in a latex which are suspended in an airstream and directed through the medium to be tested. The liquid in the airstream is removed from the airstream after passing through the medium, and a portion of the airstream is directed to a particle counter to count the particles in the airstream. By comparing the particles counted with and without the medium in the airstream, the efficiency of the medium can be determined.

Abstract: It is disclosed that alkyl amines are produced from a mixed olefin feed containing vinyl olefins with internal olefins or vinylidene olefins as impurities by a plural step process in which the mixed olefins are subjeced to a selective isomerization wherein vinylidene olefins are converted to branched internal olefins, the olefins are then hydrobrominated to produce bromoalkanes, the bromoalkanes are selectively dehydrohalogenated whereby the secondary bromoalkanes are converted to olefins leaving the primary bromoalkanes substantially unaffected, the primary bromoalkanes being subjected to amination with ammonia or a primary or secondary amine whereby they are converted to amine hydrobromides. The amine hydrobromides are then converted to amines, and the amines are recovered.