PATENTS

      1636.  ------.  [INTERNATIONAL HYDROCARBON SYNTHESIS CO.]  [Carbon Monoxide-Hydrogen Synthesis.]  French Patent 860,360.  Jan. 13, 1941; appl. Filed Sept. 23, 1939.  Oel u. Kohle, vol. 39, 1943. Sch. 6.

In conducting the synthesis of hydrocarbons from CO and H₂ the reaction products are passed at a temperature of 295° from the converter , packed with the catalyst into a heated dephlegmator, in which the fractions boiling essentially above 300° are separated.  The residue, after passing through a heat exchanger and a cooler, is led into a separator kept at 120° from which a part of the liquid product is drawn off from below and after passing through the heat exchanger and being heated to about 200° is returned to the converter where the reaction proceeds in the liquid phase.  The gases and vapors leaving the separator are then cooled and separated on the one hand in to H₂O and benzine and on the other into residual gas.