US 12,398,082 B2
Method and plant for producing ethylene and/or other olefins by steam cracking
Benedikt Keller, Munich (DE); Peter Brehm, Unterschleissheim (DE); Clemens Prunner, Neufarn (DE); Hendrik Reyneke, Munich (DE); Martin Kamann, Oberhaching (DE); Gunter Garbe, Rodenbach (DE); Daniel Keck, Ketsch (DE); Carl Schietekat, Sint-Niklaas (BE); Axel Sperber, Ludwigshafen (DE); and Alexander Weck, Hochdorf-Assenheim (DE)
Assigned to Linde GmbH, Pullach (DE); and BASF SE, Ludwigshafen (DE)
Appl. No. 18/546,459
Filed by LINDE GMBH, Pullach (DE); and BASF SE, Ludwigshafen (DE)
PCT Filed Feb. 15, 2022, PCT No. PCT/EP2022/053626
§ 371(c)(1), (2) Date Aug. 15, 2023,
PCT Pub. No. WO2022/171894, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 21157138 (EP), filed on Feb. 15, 2021.
Prior Publication US 2024/0239728 A1, Jul. 18, 2024
Int. Cl. C07C 4/04 (2006.01); B01J 3/04 (2006.01); C10G 9/36 (2006.01); F25J 3/06 (2006.01)
CPC C07C 4/04 (2013.01) [B01J 3/04 (2013.01); C10G 9/36 (2013.01); F25J 3/06 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for producing ethylene and/or other olefins by steam cracking, comprising:
charging one or more crackers with a paraffin-containing feed;
withdrawing a crude gas from the one or more crackers; and
subjecting the crude gas at least in part to a processing comprising a crude gas compression and a thermal separation using a C2 refrigerant and a C3 refrigerant, wherein:
a crude gas compressor is used for the crude gas compression;
the C2 refrigerant is compressed using a C2 refrigerant compressor; and
the C3 refrigerant is compressed using a C3 refrigerant compressor;
wherein:
the crude gas compressor comprises two serial compressor trains;
in each of these 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 each powered via frequency converters, and are each provided as variable-speed drives having the same construction; and
each of the serial compressor trains of the crude gas compression, the C2 refrigerant compressor and the C3 refrigerant compressor are aligned with each other regarding their torque.