At Süd-Chemie, we recognize and respond to the urgency of our customer’s emission control product development, which is governed by ever tightening EPA and EURO/TA-Luft standard attainment dead- lines. We strive to exceed these demands with our proprietary catalyst echnology, unsurpassed in destruction rate efficiency and durability. We approach each opportunity with an eye for the specific application, not with a single formula to fit all programs. Customer needs are fre- quently fulfilled with formulations optimized for their specific conditions and emission level requirements.
1
Süd-Chemie provides various precious metal catalysts for the most
cost effective solution. We provide our EnviCat® catalysts for traditional
and alternative fuels emissions.
Diesel
Natural gas
LPG
Biodiesel
Hydrogen
Gasoline
Dual fuel
Landfill gas
Methane
CNG
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In addition to the production of emission control catalysts, Süd-Chemie also provides technical assistance in the application of these
devices. With R&D labs, engine test cells and manufacturing in the
United States and Germany, Süd-Chemie offers customer service in
sales, marketing and technical support worldwide.
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1 Plains End, one of the world’s largest gas engine power plants, is equipped with
Süd-Chemie’s EnviCat® oxidation catalysts
2 Diesel particulate filter for stationary and mobile engines
3 cDPFs on emergency generator sets in California
Catalytic Exhaust Gas Purification
EnviCat®: Emission Control for Internal Combustion Engines and Gas Turbines
Three-way catalysts
Three-way catalysts simultaneously remove
NOX, CO and VOCs from exhaust gas:
NOX is reduced to nitrogen and water
vapour, CO is oxidized to form CO2 and
VOCs (NMNEHC) are oxidized to create
CO2 and H2O. An air/fuel ratio controller will
ensure that the catalyst receives exhaust
gas with the optimum oxygen content for
maximum efficiency. The oxygen content in
both the engine and the emission is controlled by a Lambda sensor.
Oxidation catalysts
HC and CO can be removed from the
exhaust gas using oxidation catalysts,
both pollutants being oxidized by the
oxygen in the exhaust gas to form CO2
and H2O. The basic requirements for total
conversion are an adequate supply of
oxygen and a suitably high temperature.
The oxygen content of the exhaust gas
should exceed 5% (vol). The efficiency of
oxidation catalysts also depends on the
nature of the HC.
Catalysed diesel particulate filters (cDPF)
To purify exhaust of diesel engines, a ceramic
wall-flow honeycomb material reduces particulate matter (PM), CO and HC. The filter’s
catalytic coating dramatically reduces the temperature necessary for oxidation and allows
the filter to regenerate.
Süd-Chemie’s EnviCat® cDPF is CARB verified
as a Level 3 Plus device, capable of reducing
PM by a minimum of 85% without a significant
increase in NO2 levels.
SÜD-CHEME Inc.
Energy & Environment, Air Purification
32 Fremont Street · Needham, MA 02494 · USA
Phone: +1-781-433-5900 · Fax: +1-781-444-0130
ap_america@sud-chemie.com · www.sud-chemie.com
SEE DIRECTLINK WWW.DIESELPROGRESS.COM
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