Wet electrostatic precipitator

B - Operations – Transporting – 03 – C

Patent

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Details

B03C 3/16 (2006.01) B03C 3/02 (2006.01) B03C 3/53 (2006.01)

Patent

CA 2652230

A wet electrostatic precipitator (1) comprises an inlet (2) for receiving a gas (4) containing a pollutant, and an outlet (6) for discharging therefrom the gas (8) from which said pollutant has been at least partially removed. Nozzles (24) are operative for purposes of spraying liquid onto at least one first vertical collecting surface (30) of at least one collecting electrode (18). A liquid distributor (42) is provided for purposes of pouring liquid onto at least one second vertical collecting surface (44), said at least one second vertical collecting surface (44) being located on a further collecting electrode (36), with said further collecting electrode (36) being located downstream of said at least one collecting electrode (18). The nozzles (24) are located upstream of the liquid distributor (42), as viewed with reference to the direction of flow of the gas. In a method of cleaning the collecting electrodes (18, 36) an upstream electrode (18) is sprayed with liquid while liquid is poured onto a downstream collecting electrode (36).

La présente invention concerne un précipitateur électrostatique humide (1) qui comprend une entrée (2) pour recevoir un gaz (4) contenant un polluant et une sortie (6) pour décharger le gaz (8) à partir duquel le polluant a été au moins partiellement retiré. Des buses (24) permettent de pulvériser du liquide sur au moins une surface de collecte verticale (30) d'au moins une électrode de collecte (18). Un distributeur de liquide (42) est prévu pour déverser le liquide sur au moins une seconde surface de collecte verticale (44), la seconde surface (44) étant située sur une autre électrode de collecte (36), celle-ci (36) étant située en amont de l'électrode de collecte (18). Les buses (24) sont situées en amont du distributeur de liquide (42), telles qu'elles sont visualisées en référence à la direction du flux de gaz. Dans un procédé de nettoyage des électrodes de collecte (18, 36), une électrode aval (18) est pulvérisée de liquide, tandis que le liquide est déversé sur l'électrode de collecte amont (36).

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