VERFAHREN ZUR ABTRENNUNG VON WASSERSTOFF AUS EINEM UEBERWIEGEND OLEFINHALTIGEN EINSATZSTROM

摘要

In the production of olefines by the thermal splitting of saturated hydrocarbons a hydrogen-containing hydrocarbon mixture is obtained which is broken down into individual fractions in several cleaning stages. At least part of the hydrogen is separated from the ethylene-containing fraction at a suitable stage in its cooling by means of a diaphragm. This produces a drop in the hydrogen partial pressure in the cooling inflow of ethylene to be separated which makes it possible to raise the temperatures in the subsequent condensation stages.