US 12,345,191 B2
Device and method for exhaust gas post treatment and use thereof
Robert Szolak, Freiburg (DE); Alexander Susdorf, Freiburg (DE); and Florian Rümmele, Freiburg (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Appl. No. 17/627,596
Filed by FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
PCT Filed Jul. 15, 2020, PCT No. PCT/EP2020/070017
§ 371(c)(1), (2) Date Jan. 14, 2022,
PCT Pub. No. WO2021/009240, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 10 2019 210 413.4 (DE), filed on Jul. 15, 2019.
Prior Publication US 2022/0259998 A1, Aug. 18, 2022
Int. Cl. F01N 3/20 (2006.01); B01D 53/58 (2006.01); B01D 53/86 (2006.01); B01D 53/94 (2006.01); F01N 3/08 (2006.01); F01N 3/36 (2006.01)
CPC F01N 3/2066 (2013.01) [B01D 53/9431 (2013.01); F01N 3/0892 (2013.01); F01N 3/36 (2013.01); B01D 53/58 (2013.01); B01D 53/864 (2013.01); F01N 2240/25 (2013.01); F01N 2240/30 (2013.01); F01N 2240/40 (2013.01); F01N 2610/02 (2013.01); F01N 2610/03 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for exhaust gas post treatment, comprising:
a) providing a nitrogen oxide-containing raw exhaust gas from an engine,
b) introducing the nitrogen oxide-containing raw exhaust gas into a catalytic evaporator,
c) introducing a fuel into the catalytic evaporator so as to obtain a converted fuel, wherein said converted fuel comprises any of H2, CO, and hydrocarbons having 1 to 10 C atoms,
d) mixing urea with the converted fuel, and
e) supplying the mixture obtained according to step d) to an exhaust gas post treatment system.
 
9. A device for exhaust gas post treatment, comprising:
a catalytic evaporator,
a raw exhaust gas supply line to the catalytic evaporator, configured to introduce nitrogen oxide-containing raw exhaust gas from an engine into the catalytic evaporator,
a fuel supply line to the catalytic evaporator, configured to introduce fuel into the catalytic evaporator,
a discharge line from the catalytic evaporator, configured to discharge the evaporated fuel from the catalytic evaporator, and
an exhaust gas post treatment system, wherein
the catalytic evaporator is configured to provide a converted fuel to the exhaust gas post treatment system, said converted fuel comprising any of H2, CO, and hydrocarbons having 1 to 10 C atoms.