Horizontal wet scrubbing apparatus and method for removing...

B - Operations – Transporting – 01 – D

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B01D 53/50 (2006.01) B01D 53/18 (2006.01)

Patent

CA 2111183

A horizontal wet scrubbing apparatus and method for removing sulfur dioxide from hot flue gases. The apparatus has a horizontally disposed housing through which the hot flue gases are passed, and at least one liquid injection manifold vertically disposed therein and extending to adjacent a lower wall of the housing for directing an aqueous scrubbing medium parallel to the gas flow, and a flow deflection member adjacent to, and downstream from, the manifold. Aqueous scrubbing medium is collected in reservoirs at the lower wall of the housing and recycled to the injection manifolds. The method provides for injection of aqueous scrubbing medium parallel to the flue gas flow and deflection of the gases, following the injection, by use of packing or baffles to provide intimate contact of the scrubbing medium with the gaseous stream.

Appareil et méthode de dépoussiérage humide horizontal servant à extraire le bioxyde de soufre de gaz brûlés chauds. L'appareil est constitué : d'un boîtier disposé horizontalement et destiné au passage des gaz; d'au moins un manifold d'injection de liquide disposé verticalement et s'étendant en sens adjacent à une paroi inférieure du boîtier, afin de diriger une substance de dépoussiérage aqueuse parallèlement au flux de gaz; d'un déflecteur de flux adjacent au manifold et en aval par rapport à celui-ci. La substance de dépoussiérage aqueuse est recueillie dans des réservoirs au niveau de la paroi inférieure du boîtier et est recyclée pour les manifolds d'injection. Cette méthode permet l'injection d'une substance de dépoussiérage aqueuse parallèlement au flux gazeux, ainsi que la déflection des gaz, suite à l'injection, au moyen de garnitures ou de chicanes afin de permettre un contact étroit entre la substance de dépoussiérage et le flux gazeux.

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