Borsig Gmbh

Inventio Ag

Michael Vogt

Philippe Henneau

Carsten Birk

David Eisenhawer

Danilo Peric

Andreeas Förster

David Todd Eisenhawer

Andreas FÖRSTER

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

Heat exchanger for cooling cracked gas

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.

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

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Berlin, Germany

Michael Vogt