Cracking furnace with radiant heating tubes

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 9/20 (2006.01) F28D 7/06 (2006.01) F28F 9/013 (2006.01)

Patent

CA 2289852

The present invention provides a furnace (6) and process that relied on a multiplicity of radiant heating tubes (20), each in the form of a U-shaped coil, that are mounted within a furnace firebox (10) such that an inlet leg (22) of any one of the plural tubes (20) is immediately adjacent and spaced apart from an outlet leg (26) of another one of the plural tubes (20) within the firebox (10) of a thermal cracking furnace (6). This spacial pairing of an inlet leg (22) of one tube with an outlet leg (26) of another tube of the plural radiant heating tubes (20) of the cracking furnace (6) maximizes utilization of the available radiant heat within the firebox (10) of the thermal cracking furnace (6) while reducing the likelihood of localized hot spotting that could produce coke-tar plugging of the tube (20).

La présente invention concerne un fourneau (6) et un procédé reposant sur de multiples tubes de chauffage (20) par rayonnement, chacun ayant une forme de serpentin en forme de U. Les tubes sont montés à l'intérieur d'une chambre de combustion (10) de fourneau, de sorte qu'un pied d'entrée (22) de n'importe lequel des multiples tubes (20) est immédiatement adjacent, et espacé par rapport à un pied de sortie (26) d'un autre des multiples tubes (20) situés à l'intérieur de la chambre de combustion (10) d'un fourneau (6) de craquage thermique. Cet appariement spatial du pied d'entrée (22) d'un tube avec le pied de sortie (26) d'un autre des multiples tubes (20) de chauffage par rayonnement d'un fourneau (6) de craquage, permet de maximiser l'utilisation de la chaleur de rayonnement disponible à l'intérieur de la chambre de combustion (10) du fourneau (6) de craquage thermique, et de réduire la probabilité de formation de points chauds pouvant produire une obturation du tube (20) par du goudron de coke.

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