| 摘要 |
FIELD: machine building.SUBSTANCE: invention refers to a method for obtaining an ether additive, which involves mixing of dicarboxylic acid with ether so that water, ether and excess alcohol is obtained with further separation of water and alcohol from ether by rectification; at that, as an acid there used is oxalic acid, and as alcohol - n-butanol or 2-ethylhexanol. Cyclohexane used as a solvent is supplied for mixing of oxalic acid with alcohol, and rectification is performed in two columns so that cyclohexane (solvent) is obtained in the first column, which is returned to the stage of mixing with oxalic acid and alcohol and supply of residue of the first column to the second one so that alcohol and target product (ether additive) are obtained in it.EFFECT: method allows simplifying the process and making it more economic by excluding the use of a catalyser, processing stages of reaction mass with an agent decomposing the catalyser, and reaction mass sorption and filtration stages.2 cl, 2 dwg, 1 tbl |
