Verfahren und Vorrichtung zur Herstellung einer Wasserstofffraktion mit einer Trenneinspeisung

Details

Veröffentlichungs-Nr.

EP4411296

Aktenzeichen

EP23020060

Anmeldetag

2. Februar 2023

Veröffentlichung

7. August 2024

Rechtsraum

EP

IPC

F25J3/00

Abstract

A method for producing a hydrogen fraction (N) containing at least 60% by volume hydrogen using a separation feed (A) is proposed, wherein the separation feed (A) comprises components of a first component group including methane and hydrogen and components of a second component group including hydrocarbons with two carbon atoms, wherein the separation feed (A) is subjected to a separation using a separation arrangement (100, 200) including a first separation section (110) and a second separation section (120), wherein the first separation section (110) is configured to perform a first partial condensation (E1) and a rectification (T1), wherein a first component mixture (B) and a second component mixture (C) are produced using the first separation section (110), wherein the first component mixture (B) and the second component mixture comprise a higher relative amount of the components of the first component group and a lower relative amount of the components of the second component group than the separation feed (A), and wherein the first component mixture (B) is produced at a first pressure level and the second component mixture (C) is produced at a second pressure level below the first pressure level. The second separation section (120) is configured to perform a compression (CN), a second partial condensation (E3, E4) and a counterstream absorption (T2), wherein the first component mixture (B) or a part thereof is submitted as a first absorption feed stream (D) to the counterstream absorption (T2) at the first pressure level, wherein the second component mixture (C) or a part thereof is used in forming a cyclic stream (E), wherein the cyclic stream (E) is cyclically subjected to the compression (CN) and the second partial condensation (E3, E4), wherein a side stream (F) is withdrawn from the cyclic stream (E) downstream of the second partial condensation (E3, E4), and wherein the side stream (F) or a part thereof is submitted as a second absorption feed stream (G) to the counterstream absorption (T2). Corresponding apparatus is also part of the present invention.

Anmelder

Firma

Linde GmbH

Land

🇩🇪 Deutschland

Fachgebiete