Coke oven offtake piping system

C - Chemistry – Metallurgy – 10 – B

Patent

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Details

C10B 27/06 (2006.01) F16K 1/36 (2006.01)

Patent

CA 2694486

A coke oven piping system (10) comprises a pipe assembly for conveying coke oven gases (14) from a coke oven to a collecting main (16); and flow control means comprising a flow orifice (22) in the pipe assembly with an associated obturating member (20), the obturating member being axially moveable between an open position at a certain distance from the flow orifice to a closed position in which it substantially obstructs the flow orifice (22). At least one throttling opening (28) is arranged so as to offer, towards the end of the closing stroke of the obturating member (20), an opening area for the gases to the collecting main (16) that depends on the axial position of the obturating member (20).

L'invention concerne un système de tuyauterie (10) pour four à coke, qui comprend un ensemble de tuyaux destiné à transporter les gaz du four à coke (14) depuis le four à coke vers une conduite principale de recueillement (16) ; et des moyens de contrôle de l'écoulement qui comprennent un orifice d'écoulement (22) dans l'ensemble de tuyaux avec un élément obturateur associé (20), ledit élément obturateur étant axialement mobile entre une position ouverte à une certaine distance de l'orifice d'écoulement et une position fermée dans laquelle il bloque sensiblement l'orifice d'écoulement (22). Au moins une ouverture d'étranglement (28) est placée de manière à offrir, vers la fin du mouvement de fermeture de l'élément obturateur (20), une zone d'ouverture pour les gaz vers la conduite principale de recueillement (16) qui dépend de la position axiale de l'élément obturateur (20).

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