Heat exchanger for cooling reaction gas, including a tubular connection between a cooled tube and an uncooled tube

US9074821B2 · kind B2 · utility

Assignee

• BORSIG GMBH · DE

Inventors

• Carsten Birk · Glienicke, DE
• Michael Vogt · Bochum, DE
• David Eisenhawer · Red Deer, CA

Key dates

• Filing date: Jun 16, 2010
• Grant date: Jul 7, 2015
• Expiry date: Dec 6, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F2270/00
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A heat exchanger for cooling reaction gas. A cooled tube receives hot reaction gas from a hot, uncooled tube. The cooled tube comprises a cooled inner tube and a tubular jacket that extends about the inner tube. A tubular connection is disposed between the uncooled and the cooled tubes, and includes a fork-shaped inlet head via which the inner tube is in communication with the uncooled tube. The inlet head is provided with an outer tubular section and an inner tubular section between which is disposed an intermediate space filled with heat-insulating material. The outer tubular section is connected to the tubular jacket. The inner tubular section is spaced slightly axially from the inner tube and is provided with an edge region that juts outwardly and is spaced slightly axially from the inner tube, this slight axial spacing being equal to or less than a maximum thermal expansion of the inlet head. A U-shaped sealing ring is disposed between facing end faces of the inner tube and the inner tubular section, and is disposed in a recess formed in the end face of the inner tubular section, the recess being disposed radially outwardly of the edge region of the inner tubular section.