Abstract: A method for obtaining an ethylene product in a supercritical state is proposed, in which method a gas mixture containing predominantly or exclusively ethylene and ethane is separated in a distillation column (1), which is operated at a distillation pressure level of from 5 to 15 bar, into an overhead product containing predominantly or exclusively ethylene and a bottom product containing predominantly or exclusively ethane, the overhead product being withdrawn in the gaseous state from the head of the distillation column (1) and a first portion thereof being liquefied and returned as reflux to the distillation column (1) and a second portion thereof being converted into a supercritical state and being used as the ethylene product.

Abstract: A method for obtaining an ethylene product in a supercritical state is proposed, in which method a gas mixture containing predominantly or exclusively ethylene and ethane is separated in a distillation column (1), which is operated at a distillation pressure level of from 5 to 15 bar, into an overhead product containing predominantly or exclusively ethylene and a bottom product containing predominantly or exclusively ethane, the overhead product being withdrawn in the gaseous state from the head of the distillation column (1) and a first portion thereof being liquefied and returned as reflux to the distillation column (1) and a second portion thereof being converted into a supercritical state and being used as the ethylene product.

Abstract: A method (100) for obtaining olefins is proposed, wherein a first gas mixture (b), which is produced by a steam cracking process (1), is at least partially used to form a first separation feedstock (f) which contains hydrocarbons with one to five carbon atoms, and from which at least a first separation product (g) and a second separation product (h, o) are produced, the first separation product (g) containing at least the greater proportion of the hydrocarbons with one carbon atom and of the hydrocarbons with two carbon atoms contained in the first separation feedstock (f), and the second separation product (h, o) containing at least the greater proportion of the hydrocarbons with four carbon atoms and of the hydrocarbons with five carbon atoms contained in the first separation feedstock (f), and wherein a second gas mixture (r) which is produced by an oxygenate-to-olefin process (2) is used at least partially to form a second separation feedstock (t) which contains hydrocarbons with one to five carbon atoms,