Johnson Matthey emission control systems prevent air pollution from stationary diesel engines that are used to generate electricity or to provide the motive power for pumps and industrial equipment. Our catalytic emission control technologies are based on more than fifty years of experience in controlling air pollution from thousands of stationary diesel engines and millions of mobile diesel engines. Catalytic emission control technologies for stationary diesel engines can be grouped according to the source pollutants.
Diesel Engine Emissions and Emission Control Strategies:
Nitrogen Oxides (NOx): Nitrogen oxides act as indirect greenhouse gases by producing the greenhouse gas ozone via photochemical reactions. Our compact Selective Catalytic Reduction (SCR) systems utilize ammonia or urea in combination with our SCR catalyst to reduce the NOx in diesel emissions to harmless nitrogen gas and water vapor. Our unique, highly selective Ammonia Slip Catalyst (ASC) can be added to the system to improve NOx conversion and minimize ammonia slip and CO and HC emissions for even cleaner energy production. The complete SCR system is designed, manufactured and guaranteed by Johnson Matthey.
Particulate Matter (PM), carbon monoxide (CO), hydrocarbons (HC): Diesel emissions contain PM consisting of carbon soot, a soluble organic fraction (SOF), sulfate and ash is classified as a human carcinogen. The Diesel Particulate Filter (DPF) can control PM from stationary diesel engines. Johnson Matthey's patented CRT® system integrates an oxidation catalyst with a wall-flow filter to reduce diesel PM emissions by more than 85% while continuously removing the soot from the filter. The oxidation catalyst reduces CO and HC emissions by more than 90%. An integrated silencer can also be included.
