As cities expand and industrial development reaches
into every corner of our world, air pollution threatens
both our health and our enjoyment of the natural environment.
The main pollutants of vehicles emission are Carbon
Monoxide(CO), Hydrocarbon(HC), Nitrogen Oxide(NOx),
Carbon Dioxide(CO2 )etc. Carbon Monoxide rapidly reduces
the percentage of oxygen for the blood. Beside, that
will make your feeling, reaction, apprehension, and
memory much poor than before. In serious, it will make
a great damage for your circulatory system and take
a high risk for your life. The NOx main component is
NOĦBNO2 , this is also have a critical damage for human,
especially for the respiratory system. Fatally, all
scientists also unclearly explain and understand the
HC this component have any damage for the human body.
But, when the HC and NOx meet the ultraviolet light
in the sunshine while produce a complicate chemical
reaction. At the same time, that will make a new contaminant
affect the human body. Otherwise, when the human breath
a CO2 for long times ago, it will easy have a nervous
The above equation illustrates what is meant to happen
during combustion : oxygen is consumed and Fuel is oxidized
thermally. Ideally, combustion ought to be clean process
- one where all fuel is consumed, leaving behind only
carbon dioxide and water and producing energy. But in
the real world, complete combustion is seldom achieved.
The need to eliminate these noxious by-products of the
combustion process led to the invention of the Catalytic
A Catalytic Converter consists
of three major elements:
1) Metal housing, which holds the converter and the
exhaust systems together.
2) Substrate, usually made of ceramic or metal material,
coated with a thin layer of washcoat chemicals.
3) Washcoat Chemicals, that are the active components
for "CATALYSIS", defined as the acceleration
of a chemical reaction to reduce unwanted pollutants.
Attached to the engine of a vehicle or machine powered
by interal combustion, a Catalytic Converter forces
the emission gases to make contact with its substrate.
The gases react with the substrate's washcoat chemicals,
causing unconsumed hydrocarbons (HC), carbon monoxide
(CO), nitrogen oxide (NOx) and particulate matter (PM)
to be burned up. The result is cleaner emissions.
In traditional Catalytic Converter, the substrate is
a "HONEYCOMB" made of ceramic, coated with
activated alumina-based wash-coat (Figure 1). Gasline
is suitable use the honeycomb than disesl. Many particulate
matter product when use the honeycomb in disesl. While
effective, the design of the honeycomb nevertheless
allows many particles to flow through without coming
into contact with the substrate.
To achieve a higher rate of catalysis, Catalyst employs
a substrate made of a special metallic alloy. The emission
gases follow a convoluted path through this material,
turbulence is created, forcing the gases into much closer
contact with the substrate than the standard honeycomb
design can achieve (Figure 2).
At Catalyst (Hong Kong) Environmental Technology Limited
- Catalyst- we supply emission control solutions that
are efficient and cost-effective for automakers, engine
designers, fleet operators and factory owners. Our Catalytic
Converters greatly reduce noxious emissions from internal
combution engines. They are light, easy to install and
available in sizes for all applications, whether for
customized use or retrofitting. And thanks to Catalyst
Research & Development, product performance exceeds
Count On Us
At Catalyst, our engineers, designers and technicians
put their experience and know how to work for you-evaluating
your organizations current applications and future needs,
helping you to maximize the potential of our products