Method and apparatus for scrubbing gases, using mixing vanes

Details Method and apparatus for scrubbing gases, using mixing vanes Method and apparatus for scrubbing gases, using mixing vanes

B - Operations, Transporting

01

D

B01D 47/02 (2006.01) B01D 50/00 (2006.01) B01D 53/18 (2006.01) F01N 3/04 (2006.01)

Patent

CA 2464269

A scrubber for exhaust gases comprises a series of nested counter-flow passages including a hot plenum having a star-shaped section. Exhaust gases from the hot plenum surge through a liquid bath and flow in a reverse direction through an inclined array of flat, overlapping, spaced mixing vanes, causing turbulence in the exhaust gases and the formation of highly dispersed tiny bubbles, which enhance the solution of gaseous pollutants into the scrubbing liquid. Mist eliminator vanes strip entrained liquids from the exhaust gases. The hot plenum, reheats the exhaust gases to an unsaturated level. The scrubber is highly effective in reducing particulate matter, stripping sulphur dioxide and nitrogen dioxide from exhaust gases, and reducing the heat signature and visual evidence thereof.

Un épurateur des gaz d'échappement comprend une série de passages à contre-courant emboîtés, y compris un plénum chaud ayant une coupe en étoile. Les gaz d'échappement provenant du plénum chaud passent par un bain liquide et s'écoulent dans une direction opposée à travers un réseau incliné d'ailettes de mélangeage espacées, plates et chevauchantes, ce qui produit une turbulence dans les gaz d'échappement et permet la formation des microbulles finement dispersées, qui améliorent la dilution des polluants gazeux dans le liquide d'épuration. Des ailettes antibuée séparent les liquides entraînés des gaz d'échappement. Le plénum chaud réchauffe les gaz d'échappement et les porte à un niveau insaturé. L'épurateur est hautement efficace pour réduire les matières particulaires, épurer les gaz d'échappement du dioxyde de soufre et du dioxyde d'azote, et réduire leur signature thermique ainsi que leur manifestation visuelle.

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