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OwnerHoward Paul Davis, David William Missionsinventors
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The present invention provides an apparatus for the treatment of exhaust gas from diesel engine or other combustion type processes, the apparatus comprising liquid and Ozone gas injection means (2) and (3) respectively, for delivering the liquid and Ozone gas into a pressurised exhaust gas stream pipe (1) when the diesel engine or other type internal combustion processes are in use. The liquid and the Ozone gas commingle as the liquid is reduced to a spray of very fine droplets in order to capture sub micron particulate materials before entering a shortened reaction/contacting chamber (4) where the contents undergo a phase change before exiting and entering a gas liquid separator (5) where the liquid droplets are separated from the treated particulate materials, which are subjected to a scrubbing regime in a downstream scrubber (11) before exiting the apparatus through an exit pipe (7). When in use, the apparatus uses the diesel engine or other combustion type process pressure to create high velocities and Reynolds numbers in the shortened reaction/contacting chamber (4) in which NOx is rapidly mixed and reacted with the injected Ozone gas and converted through to N2O5 and wherein the sub micron particulate materials, with condensed hydrocarbons, are simultaneously wetted and efficiently captured by the injected and finely sheared liquid droplets.
An apparatus for injecting liquid into a pressurised gas stream containing suspended solids in the form of fine particles as well as NOx vapours or gases, which apparatus comprises a gas-liquid-vapour contacting pressure duct (1) including a droplet generator (1a) comprising liquid introducing means (2), which lead into said duct (1) and terminate in one or more spray nozzles for producing a very fine spray of liquid droplets, the apparatus also comprising a droplet separator (5) where the liquid and the particulate laden exhaust gas are separated, the apparatus also comprising a scrubber/absorber (11) wherein the reacted gas product N2O5 is liberated from the surrounding carrier gas, characterised in that the apparatus further comprises means (3) for injecting Ozone gas into the pressure duct (1) and the pressurised gas stream contained therein when the apparatus is in use, the apparatus further comprising a combined atomising/reacting contacting chamber (4) in which injected liquid in very fine droplet form commingles with the Ozone gas as the liquid droplets collide with and capture the fine particulate solids suspended in the pressurised gas stream, which fine particles are removed in the droplet separator and the commingled Ozone gas passes through the droplet separator (5) whereafter the N2O5 reaction product enters the scrubber (11) whereat, when the apparatus is in use, the pressurised gas is freed of any N2O5 and residual droplets before passing to atmosphere through an outlet (7).
Dependencies are inferred from the claim text.