Basf Se Corporation

Linde Aktiengesellschaft

Linde Gmbh

Martin Kamann

Alexander Weck

Hendrik Reyneke

Josef Kunkel

Axel Sperber

Sean McCracken

Benedikt Keller

Peter Brehm

Carl Schietekat

Daniel Keck

Gunter Garbe

Clemens Prunner

Michael Scholch

Gunther Kracker-Semler

Eva-Maria Katzur

Jörg Matthes

Michael SCHÖLCH

Torben HÖFEL

Sean Mccracken

Thomas Bretschneider

A method for producing ethylene and/or other olefins by steam cracking includes charging one or more crackers with a paraffin-containing feed and withdrawing a crude gas from the one or more crackers. The crude gas is subjected at least in part to a treatment comprising a crude gas compression and a thermal separation using a C2 refrigerant and a C3 refrigerant. A crude gas compressor is used for the crude gas compression, wherein the ethylene refrigerant is compressed using a C2 refrigerant compressor. The propylene refrigerant is compressed using a C3 refrigerant compressor. The crude gas compressor comprises two serial compressor trains. The compressor trains, the C2 refrigerant compressor and the C3 refrigerant compressor are each operated at least in part using electrical drives, which have at least partially identical power features, are provided as variable-speed drives of the same construction, and are each fed via frequency converters.

Method and plant for producing ethylene and/or other olefins by steam cracking

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or exclusively ethylene and a bottom product containing predominantly or exclusively ethane, the overhead product being withdrawn in the gaseous state from the head of the distillation column () and a first portion thereof being liquefied and returned as reflux to the distillation column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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Oberhaching, Germany

Martin Kamann