| abstract |
The invention relates to a process for the distillative workup of the electrolysis of the electrochemical oxidation of 1,1,2,2-tetramethoxyethane (TME) with methanol to trimethyl orthoformate (TMOF) in a liquid electrolyte, which is characterized in that the distillative workup in a Dividing wall column (TK) carries out with 30 to 110 theoretical plates, in which a dividing wall (T) in the column longitudinal direction and formation of an upper common column region (1), a lower common column region (6), a feed part (2, 4) with reinforcing member (2 ) and driven part (4) and a removal part (3, 5) with output part (3) and reinforcement part (5) is arranged, with supply of the electrolysis discharge a in the central region of the feed part (2, 4), recovery of TMOF as a side draw the central region of the removal part (3, 5) and discharge of one or more low boiler fractions from the upper common Kolberberei ch (1) and one or more high boiler fractions from the lower common column region (6). |