Method and spray tower for contacting gases and liquid...

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 53/50 (2006.01) B01D 53/18 (2006.01) B01D 53/78 (2006.01) B01J 19/24 (2006.01)

Patent

CA 2586493

A method for contacting gases and liquid droplets for mass and/or heat transfer and a spray tower (3) are disclosed, in which liquid is injected at a number of levels in counterflow to the gas, the gas being fed through at least two inlet openings (2) in the shell of the spray tower (3). In this case, in order to reduce the differences in the contact duration, the flow direction of the gas at the inlet openings (2) points into the internal region of the spray tower, which has a diameter of greater than or equal to 12 m, in particular greater than 20 m, such that the flow directions of the at least two gas streams intersect on their extension inside the spray tower (3), in particular at the center of the spray tower at up to half the spray tower radius downstream of the center of the spray tower.

L'invention concerne un procédé destiné à la mise en contact de gaz et de gouttes de liquide pour l'échange de matière et/ou de chaleur, ainsi qu'une tour de pulvérisation (3) dans laquelle un liquide est injecté dans plusieurs plans, dans le sens opposé à celui du gaz, le gaz étant introduit par au moins deux ouvertures d'entrée (2) dans l'enveloppe de la tour de pulvérisation (3). Pour réduire les différences dans la durée de contact, la direction d'écoulement du gaz au niveau des ouvertures d'entrée (2) est orientée de telle manière dans l'intérieur de la tour de pulvérisation, présentant un diamètre supérieur ou égal à 12 m, de préférence supérieur à 20 m, de telle manière que les directions d'écoulement des flux de gaz se coupent dans leur prolongement à l'intérieur de la tour de pulvérisation (3), notamment au centre de la tour, jusqu'à environ la moitié du rayon de la tour en aval du centre de la tour.

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