Linde Aktiengesellschaft

Michael Scholch

Torben Höfel

Josef Kunkel

Martin Kamann

Sean McCracken

Gunther Kracker-Semler

Sean Mccracken

Torben Hofel

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 (), 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or exclusively ethylene and a bottom product containing predominantly or exclusively ethane, the overhead product being withdrawn in the gaseous state from the head of the distillation column () and a first portion thereof being liquefied and returned as reflux to the distillation column () and a second portion thereof being converted into a supercritical state and being used as the ethylene product. Provision is made that, for converting the second portion into the supercritical state, multi-stage compression from the distillation pressure level via a plurality of intermediate pressure levels to a supercritical pressure level is carried out, the second portion in the multi-stage compression being converted predominantly or exclusively from the gaseous into the supercritical state. A corresponding installation is likewise a subject of the invention.

Process and plant for obtaining an ethylene product in a supercritical state

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Starnberg, Germany

Michael Scholch