Process for separating 2-butanol from mixtures of tert.-butanol / water

摘要

Process for separating 2-butanol (SBA) from a technical mixture having 2-butanol, tert-butanol (TBA) and water, the mass portion of water in the mixture greater concentration limit line dela distillation must joining the two TBA / water and SBA / water azeotrope wherein the water concentration of the mixture is reduced by adding a stream containing enTBA so that the resulting mixture presents, in relation to its composition SBA / TBA / water, ENMASA portion of water that is less than the limit concentration of the boundary line distillation joining the TBA / water and SBA / water dosazeótropos, and in which this mixture is distilled in a stream that presentaSBA and a stream having TBA and water, and wherein mixture of the art, prior to supply of the TBA containing stream in a column, seretira water.