Heat exchanger for cooling cracked gas

US12298085B2 · kind B2 · utility

Assignee

• BORSIG GMBH · DE

Inventors

• Carsten Birk · Glienicke, DE
• Andreeas Förster · Berlin, DE
• Michael Vogt · Bochum, DE

Key dates

• Filing date: Jul 18, 2022
• Grant date: May 13, 2025
• Expiry date: Jun 26, 2043

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F2275/06
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A cracked gas cooling heat exchanger includes a tube connection between an uncooled tube (1) and a cooled tube (2), having a cooled inner tube (3) enclosed by a jacket tube (4), with a tube intermediate space (5) for flowing cooling medium. A gas inlet header (11) has a GI tube inner part (12) and a GI tube outer part (13) and a cooling space (14) with an insulating layer (15). The GI tube outer part connects via a water chamber (6) to the jacket tube. The GI tube inner part faces the inner tube and is connected on a face (8) of the water chamber. A weld backing ring (16), between an end face (9) of the cooling space and a bottom face (8) of the water chamber, is in the insulating layer of the cooling space, arranged in a turn-out/groove (17) in the insulating layer.