Auto
Exhaust Emission Control Catalysts
EXHAUST
POLLUTANTS
• HYDROCARBONS
Hydrocarbon emissions result when
fuel molecules in the engine do not
burn or burn only partially. Hydrocarbons
react in the presence of nitrogen
oxides and sunlight to form ground-level
ozone, a major component of smog.
Ozone irri-tates the eyes, damages
the lungs, and aggravates respiratory
problems. It is our most widespread
and intractable urban air pollution
problem. A number of exhaust hydrocarbons
are also toxic, with the potential
to cause cancer.
• NITROGEN OXIDES (NOx)
Under the high pressure and temperature conditions in an engine, nitrogen and oxygen atoms in the air react to form various nitrogen oxides, collectively known as NOx. Nitrogen oxides, like hydrocarbons, are precursors to the formation of ozone. They also contribute to the formation of acid rain.
• CARBON MONOXIDE
Carbon monoxide (CO) is a product of incomplete combustion and occurs when carbon in the fuel is partially oxidized rather than fully oxidized to carbon dioxide (CO ). Carbon monoxide reduces the flow of oxygen in the bloodstream and is particularly dangerous to persons with heart disease.
• CARBON DIOXIDE
In recent years, the U.S. Environmental Protection Agency (EPA) has started to view carbon dioxide, a product of “perfect” combustion, as a pollution concern. Carbon dioxide does not directly impair human health, but it is a “greenhouse gas” that traps the earth’s heat and contributes to the potential for global warming.
OUR
PRODUCTS
We can provide the three way catalytic
converters (TWC) which include Cerium
/ Zirconium mixed oxides and precious
metals (Rh, Pt and Pd). The high activity,
selectivity and long durability are
present in the experiment.
Pollution Control for auto-exhaust and Industrial Exhaust
Carrier material |
Y -Al2O3 rare earth metal modified cellular ceramics |
Active composition |
Palladium chloride, Platinum chloride, nickel nitrate, rare earth |
Item |
CO (%) |
HC(ppm) |
SO2(mg/m3) |
NOX(mg/m3) |
Pb(mg/m3) |
|
Before purification |
5.0 |
4000 |
2.000 |
8.00 |
2.00 |
|
After purification |
0.75 |
550 |
0.02 |
2.00 |
0.02 |
|
Efficiency |
85 |
86.2 |
99 |
80 |
99 |
