Development of the technology for producing isopropyl alcohol by the sulfuric acid method

This article is devoted to research aimed at studying the composition, physicochemical properties of propylene sulfuric acid hydration waste and research into the possibility of their qualified use. Our studies have shown that the waste from the diisopropyl ether absolutization column contains propylene oligomers (di-, tri-, tetra-, pentamers) and oxygen-containing compounds, mainly alkyl derivatives of unsaturated acids. It is obvious that when propylene is absorbed by sulfuric acid under the conditions of industrial synthesis, side reactions of oligomerization and oxidation of propylene and its oligomers occur. Since the involvement of the acid group of waste in the esterification reaction with alcohols resulted in a product containing both an ester and propylene oligomers, the possibility of using the synthesized compound to improve the quality characteristics of transformer oil and diesel fuel was investigated Production of isopropyl alcohol by sulphuric acid hydration of propylene in spirt of imperfection from ecological point of view up to present time didn’t lose is industrial significance. By comparison of two industrial methods production of isotropic alcohol by direct find sulphuric acid hydration of propylene it is necessary to notice the high conversion of propylene by sulphuric acid method and low(because of thermodynamical limitations)-by direct hydration. A preferable use in industry of sulphuric acid method production of isopropyl alcohol was noticed. In this work an attempt to improve the ecological and technological-economical indices of sulphuric acid hydration of propylene by way of qualified use of wasters received in this production have been undertaken