Quench system for metallurgical gases

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 47/10 (2006.01) C01B 17/58 (2006.01) C01B 17/80 (2006.01)

Patent

CA 2634162

A quench system for cooling and/or cleaning metallurgical gases which are guided cocurrently with an acid-containing liquid, in particular sulfuric acid, includes a gas inlet (51) through which the gases are supplied from the top, an annular channel (55) extending about the inner circumference of an upper Venturi portion (52), over whose inner overflow wall (57) the acid-containing liquid flows over into the upper Venturi portion (52), and lateral nozzles (58) provided below the annular channel (55), through which additional acid-containing liquid is introduced. To obtain a clear separation between wall portions of the Venturi portion exposed to dry/hot or wet/cold conditions, the inside diameter (D1) of the upper Venturi portion (52) is greater than the inside diameter (D2) of the gas inlet (51), in accordance with the present invention.

L'invention concerne un système de refroidissement qui refroidit et/ou épure des gaz métallurgiques qui sont guidés à co-courant avec un liquide qui contient de l'acide, en particulier de l'acide sulfurique. Le système comprend une entrée de gaz (51) par laquelle les gaz sont introduits par le sommet, un canal annulaire (55) qui s'étend autour de la circonférence intérieure d'une partie supérieure (52) en Venturi, sur la paroi intérieure de débordement (57) duquel le liquide qui contient de l'acide pénètre dans la partie supérieure (52) en Venturi, et des ajutages latéraux (58) prévus en dessous du canal annulaire (55) par lesquels un supplément de liquide contenant de l'acide est introduit. Selon la présente invention, pour obtenir une séparation nette entre les parties de paroi de la partie en Venturi exposées à des conditions sèches/chaudes ou humides/froides, le diamètre intérieur (D1) de la partie supérieure (52) en Venturi est supérieur au diamètre intérieur (D2) de l'entrée de gaz (51).

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