Novel SCR systems for diesels

Connecticut based Combustion Components Associates Inc, a specialist in the development of clean power technologies, has won several air pollution control contracts totalling over $2.7 million including orders for six selective catalytic reduction (SCR) systems for stationary diesel engines utilising its patented airless urea injection system. The CCA system allows the injection of the non-hazardous solution directly into the exhaust duct of the engine in close proximity to the catalyst for the control of nitrogen oxide emissions. This avoids the hazards associated with transport and storage of ammonia or the need for complex on-site equipment for the conversion of urea to ammonia prior to injection. The SCR systems will be applied to two 2.2 MW existing diesel engines by a northeastern USA utility looking to operate these older engines for peak demand periods and to four new 2.5 MW diesel engines operated for peak power demand by an east coast commercial customer.

CCA has also received an order from a southeastern USA municipality for the supply of two selective non-catalytic reduction (SNCR) systems to be applied to two 900 ton/day refuse-derived fuel plants for the reduction of NOx emissions. CCA will provide design engineering, computer modelling, injection system hardware, and the urea storage tank, in addition to start-up and commissioning services.