Heat exchanger adapted for the production of carbon black

F - Mech Eng,Light,Heat,Weapons – 28 – D

Patent

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Details

F28D 7/16 (2006.01) C09C 1/50 (2006.01) F28F 9/00 (2006.01)

Patent

CA 2238752

A tube heat exchanger intended to be used for the production of carbon black, comprises a cylindrical chamber (16) which is enclosed by a cylindrically shaped outer shell wall (14') and two end walls (17, 18), and a plurality of tubes (13') which extend through the entire cylindrically shaped chamber (16), from one end wall to the other. To the heat exchanger are provided an inlet (1') and an outlet (25) for gas intended to flow on the outside of the tubes (13'). Moreover, the heat exchanger comprises a further shell wall (23), which is cylindrical and placed inside and concentrically with the outer shell wall (14'), so that a cylindrically shaped gap space (29), which is open at both ends, is formed between the two shell walls. The gas entering through the inlet (1') passes this gap space (29) before it comes into contact with the tubes (13'). The advantage of this is that the outer shell wall is cooled and that the amount of carbon precipitations within the tubes diminishes.

La présente invention concerne un échangeur thermique tubulaire conçu pour servir à la production de noir de carbone. Cet échangeur est constitué d'une chambre cylindrique (16) délimitée par une paroi d'enveloppe externe (14') de forme cylindrique et par deux parois d'extrémités (17, 18), et d'une pluralité de tubes (13') qui traversent la totalité de la chambre cylindrique (16) d'une paroi d'extrémité à l'autre. L'échangeur thermique est équipé d'un orifice d'admission (1') et d'un orifice de sortie (25) pour les gaz devant normalement circuler à l'extérieur des tubes (13'). De plus, l'échangeur thermique est constitué d'une paroi d'enveloppe (23) cylindrique supplémentaire et interne, concentrique avec la paroi d'enveloppe externe (14') de sorte qu'il subsiste, entre les deux parois d'enveloppe, un espace (29) de forme cylindrique, ouvert sur ses deux extrémités. Le gaz pénétrant par l'orifice (1') circule dans cet espace (29) avant de venir en contact avec les tubes (13'). L'avantage de cette disposition est que la paroi d'enveloppe extérieure est refroidie et que le volume des précipitations de carbone à l'intérieur des tubes diminue.

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