Global patent index - EP 0974803 A2

EP 0974803 A2 2000-01-26 - Heat exchanger for cooling hot process gas

Title (en)

Heat exchanger for cooling hot process gas

Title (de)

Wärmetauscher zum Kühlen eines heissen Prozessgases

Title (fr)

Echangeur de chaleur pour refroidir un gaz de traitement chaud

Publication

EP 0974803 A2 (DE)

Application

EP 99113759 A

Priority

DE 19833004 A

Abstract (en)

Heat exchanger has a horizontal transfer line (4) feeding hot process gas connected to the process gas generator (1). A connecting pipe (22) is arranged coaxially to each cooling pipe (11), so that on one side the connecting pipe (22) engages the cooling pipe (11) and leads out from the transfer line (4) on the other side. Heat exchanger for cooling a hot process gas produced in a gas generator (1) or a reactor comprises several cooling pipes (11) each surrounded by an outer tube (12). Each cooling pipe (11) and each outer tube (12) are welded at both ends to a water chamber (13, 14) for introducing and removing a cooling medium. The water chamber (13, 14) consists of a massive strip-like piece, into which circular recesses (15) are inserted corresponding to the number of cooling pipes (11). Each recess surrounds a cooling pipe (11) and has a diameter that is the same or is larger than inner diameter of the outer tube (12). The recess (15) has a thin annular base (16) having a low residual wall thickness. A horizontal transfer line (4) feeding hot process gas is connected to the process gas generator (1). A connecting pipe (22) is arranged coaxially to each cooling pipe (11), so that on one side the connecting pipe (22) engages the cooling pipe (11) and leads out from the transfer line (4) on the other side.

Abstract (de)

Ein Wärmetauscher (2) zum Kühlen eines in einem in einem Prozeßgaserzeuger (1) oder einem Reaktor erzeugten, heißen Prozeßgases ist mit mehreren von jeweils einem Außenrohr (12) umgebenen Kühlrohren (11) versehen. Jedes Kühlrohr (11) und jedes Außenrohr (12) ist an beiden Enden an je eine Wasserkammer (13, 14) zur Zuführung und Abführung eines Kühlmediums angeschweißt. Die Wasserkammer (13, 14) besteht aus einem massiven, streifenförmigen Stück, in das entsprechend der Anzahl der Kühlrohre (11) in einem Abstand voneinander kreisförmige Vertiefungen (15) eingebracht sind, Jede Vertiefung (15) umgibt ein Kühlrohr (11) und weist einen Durchmesser auf, der gleich dem oder größer als der Innendurchmesser des Außenrohres (12) ist. Die Vertiefung (15) weist im Bereich der Rohrenden der Kühlrohre (11) einen dünnen, ringförmigen Boden (16) mit einer geringen Restwanddicke auf. An den Prozeßgaserzeuger (1) ist eine horizontale, das heiße Prozeßgas führende Übergangsleitung (4) angeschlossen. Koaxial zu jedem Kühlrohr (11) ist ein Verbindungsrohr (22) angeordnet, das einerseits in das Kühlrohr (11) eingreift und andererseits von der Übergangsleitung (4) ausgeht. <IMAGE>

IPC 1-7 (main, further and additional classification)

F28D 7/10; C10G 9/00; F28F 9/02; F28F 9/18

IPC 8 full level (invention and additional information)

F28F 9/013 (2006.01); C10G 9/00 (2006.01); F28D 7/10 (2006.01); F28F 9/02 (2006.01); F28F 9/18 (2006.01)

CPC (invention and additional information)

C10G 9/002 (2013.01); F28D 7/106 (2013.01); F28F 9/02 (2013.01); F28F 9/18 (2013.01); F28D 2021/0075 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0974803 A2 20000126; EP 0974803 A3 20001220; EP 0974803 B1 20030115; AT 231233 T 20030215; DE 19833004 A1 20000127; ES 2191388 T3 20030901; JP 2000065487 A 20000303; US 6148908 A 20001121

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