US 11,686,236 B1
Device for the reduction of ammonia and nitrogen oxides emissions
Emmanuel Laigle, Courbevoie (FR); Christophe Chaillou, Rueil-Malmaison (FR); Caroline Norsic, Rueil-Malmaison (FR); and André Nicolle, Nanterre (FR)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Feb. 18, 2022, as Appl. No. 17/651,700.
Int. Cl. F01N 3/30 (2006.01); F01N 3/021 (2006.01); F01N 3/28 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01); B01D 53/94 (2006.01); B01D 53/04 (2006.01); B01D 46/00 (2022.01); F01N 3/10 (2006.01)
CPC F01N 3/30 (2013.01) [B01D 46/0035 (2013.01); B01D 53/0438 (2013.01); B01D 53/9454 (2013.01); B01D 53/9477 (2013.01); B01D 53/9481 (2013.01); B01D 53/9495 (2013.01); F01N 3/021 (2013.01); F01N 3/101 (2013.01); F01N 3/2013 (2013.01); F01N 3/2803 (2013.01); F01N 9/00 (2013.01); B01D 2253/108 (2013.01); B01D 2255/904 (2013.01); B01D 2255/911 (2013.01); B01D 2257/406 (2013.01); B01D 2259/4566 (2013.01); B01D 2279/20 (2013.01); F01N 2370/04 (2013.01); F01N 2900/1602 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An exhaust gas purifying system for an engine comprising:
a three-way catalyst coupled to an exhaust line;
a particulate filter coupled to the exhaust line downstream of the three-way catalyst;
an ammonia sorbent unit coupled to the exhaust line downstream of the particulate filter;
an exhaust gas purifying catalyst unit coupled to the exhaust line downstream of the ammonia sorbent unit; and
a gas injection component coupled to the exhaust line downstream of the particulate filter, the gas injection component comprising an oxygen-containing gas.