Downcomer for chemical process tower

Details Downcomer for chemical process tower Downcomer for chemical process tower

B - Operations, Transporting

01

D

B01D 3/20 (2006.01) B01J 10/00 (2006.01) B01J 19/32 (2006.01)

Patent

CA 2278756

An improved downcomer for vapor liquid contact towers. The downcomer is formed between generally semi-conical walls and the wall of the tower. The downcomer outlet is formed by the lower edge of the generally semi-conical walls and the wall of the tower with the lower edge of the generally semi-conical walls being closer to the wall of the tower at the center of the downcomer outlet than at the opposing end portions of the downcomer outlet so that more liquid flows through the opposing end portions of the downcomer outlet than through the center of the downcomer outlet thereby providing a substantially uniform flow of liquid across the tray adjacent the downcomer.

La présente invention concerne un modèle perfectionné de plateau perforé destiné à des colonnes de barbotage vapeur-liquide. Ce plateau perforé est établi entre des parois généralement semi-coniques et la paroi de la colonne. L'évacuation du plateau perforé est défini par le bord inférieur des parois généralement semi-coniques et la paroi de la colonne, le bord inférieur des parois généralement semi-coniques étant plus proche de la paroi de la colonne (au centre de l'évacuation du plateau perforé) que des zones d'extrémité de l'évacuation du plateau perforé, et ce, de façon qu'une la majeure partie des liquides s'écoule par les zones d'extrémité opposées de l'évacuation du plateau perforé de préférence au centre de l'évacuation du plateau perforé, ce qui fait que c'est un flux sensiblement uniforme qui traverse le plateau au voisinage du plateau perforé.

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