Patent ID: 8894748
Filing Date: 2014-11-25
Classification: B01D

Abstract:
1. A method comprising: (a) directing a particulate-containing gas stream having a concentration of at least 0.3 mg/m (i) the waste gas inlet at one end; (ii) a treated gas outlet at an opposite end; (iii) a liquid inlet manifold proximal the waste gas inlet, the liquid inlet manifold comprising a plurality of nozzles, wherein the nozzles are oriented to spray liquid droplets co-current to the gas stream; (iv) and a demister proximal the treated gas outlet; wherein the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister, thereby defining a substantially unrestricted particulate-liquid contacting zone between the liquid inlet manifold and the demister; (b) passing the gas stream through the substantially unrestricted particulate-liquid contacting zone; (c) supplying a liquid to the plurality of nozzles via the liquid inlet manifold, thereby spraying liquid droplets through the substantially unrestricted particulate-liquid contacting zone and co-current to the flow of the gas stream, wherein the liquid droplets have a volume median droplet diameter (DV0.5) of from 240 microns to 600 microns; (d) contacting at least some of the PM2.5 particulate matter with at least some of the liquid droplets, thereby removing at least 50 wt. % of the PM2.5 particulate matter from the gas stream.