US 11,684,690 B2
Device for reducing pollutants in a gaseous mixture
Giovanni Baldi, Montespertoli (IT); Laura Niccolai, Montelupo Fiorentino (IT); Olivia Bitossi, Montespertoli (IT); Marco Bitossi, Montelupo Fiorentino (IT); and Simone Bonari, Fucecchio (IT)
Assigned to CONSORZIO COLTECH, Montelupo Fiorentino (IT)
Appl. No. 16/651,443
Filed by CONSORZIO COLTECH, MONTELUPO FIORENTINO (IT)
PCT Filed Sep. 4, 2018, PCT No. PCT/IB2018/056721
§ 371(c)(1), (2) Date Mar. 27, 2020,
PCT Pub. No. WO2019/049019, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. 102017000099625 (IT), filed on Sep. 6, 2017; and application No. 102017000099719 (IT), filed on Sep. 6, 2017.
Prior Publication US 2020/0282097 A1, Sep. 10, 2020
Int. Cl. A61L 9/18 (2006.01); B01D 53/86 (2006.01); F24F 8/167 (2021.01); A61L 101/02 (2006.01); A61L 101/12 (2006.01); A61L 101/18 (2006.01); A61L 101/24 (2006.01); A61L 101/28 (2006.01); B01J 21/06 (2006.01); B01J 21/04 (2006.01); B01J 21/08 (2006.01); B01J 35/00 (2006.01); B01J 37/02 (2006.01)
CPC A61L 9/18 (2013.01) [B01D 53/8628 (2013.01); B01D 53/8668 (2013.01); B01J 21/04 (2013.01); B01J 21/063 (2013.01); B01J 21/08 (2013.01); B01J 35/004 (2013.01); B01J 35/0013 (2013.01); B01J 37/0215 (2013.01); F24F 8/167 (2021.01); A61L 2101/02 (2020.08); A61L 2101/12 (2020.08); A61L 2101/18 (2020.08); A61L 2101/24 (2020.08); A61L 2101/28 (2020.08); A61L 2209/12 (2013.01); A61L 2209/14 (2013.01); A61L 2209/211 (2013.01); A61L 2209/212 (2013.01); A61L 2209/22 (2013.01); B01D 2255/20707 (2013.01); B01D 2255/802 (2013.01); B01D 2257/404 (2013.01); B01D 2257/708 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device (1) for reducing pollutants in a gaseous mixture comprising:
a containment body (2) having an inlet portion (3) for the gaseous mixture and an outlet portion (4) for the processed gaseous mixture, the containment body (2) imposing to the gaseous mixture a fixed direction of flow (D),
at least one filtering unit (10) comprising a photocatalytic filter (7) interposed, along the fixed direction of flow (D), between a first light source (6a) and a second light source (6b), both having a wavelength in the visible spectrum, the photocatalytic filter (7) comprising a photocatalytic nanoparticle coating and the nanoparticle coating comprising titanium dioxide doped with a nitrogen doping agent, the device (1) also comprising a unit (5), positioned before the at least one filtering unit (10), for straightening the flow of the gaseous mixture, for uniformly distributing the flow rate of the gaseous mixture entering horizontally from said inlet portion (3) on the working section of said filtering unit (10), positioned after said unit (5);
wherein the photocatalytic filter (7) is made of ceramic material and comprises at least cordierite and/or mullite; and
wherein the nitrogen doping agent comprises at least ammine.