B
PERFORMING OPERATIONS; TRANSPORTING
B
PERFORMING OPERATIONS; TRANSPORTING
B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D
SEPARATION
B01D
SEPARATION
B01D53/00
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
B01D53/00
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
B01D53/34
Chemical or biological purification of waste gases
B01D53/34
Chemical or biological purification of waste gases
B01D53/92
of engine exhaust gases
B01D53/92
of engine exhaust gases
B01D53/94
by catalytic processes
B01D53/94
by catalytic processes
B01D53/9404
Removing only nitrogen compounds
B01D53/9404
Removing only nitrogen compounds
B01D53/9409
Nitrogen oxides
B01D53/9409
Nitrogen oxides
B01D53/9413
Processes characterised by a specific catalyst
B01D53/9413
Processes characterised by a specific catalyst
B01D53/9418
for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
B01D53/9418
for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas