Systems for lean-burn applications & NOx reduction

WIP.OCT.13. SCR. AGRIEMACH.p26:RHP.WIP.p27.qxd 08/10/2013 15:23 Page 1 S 26 elective Catalytic Reduction (SCR) is a means of converting Nitrogen Oxides (NOx) into Nitrogen (N2) and Water (H2O), using an injection of urea (AdBlue) with the aid of a catalyst. A specialist company in the UK which offers SCR technology is Agriemach Ltd. Its systems are used on lean burn applications and offer a very high efficiency for the reduction of nitrogen oxides. Agriemach Ltd has experience with many different fuel types and the issues associated with them. The company offers systems suitable for diesel and biodiesel engines, natural gas and biogas, and renewable fuels, and offer designs for a multitude of engine power outputs. David Kallmann of Agriemach tells WIP: “Italy is famous for its premium quality Parma ham. One of our customers is currently using waste material from the meat process to generate electrical energy and heat.” He continues: “This needs to be done in a clean way, and so the customer selected us to be the emission reduction system partner on the project. Our experience and know-how convinced them. A ‘perfect SELECTIVE CATALYTIC REDUCTION Systems for lean-burn applications & NOx reduction Agriemach Ltd offers a bespoke service for the design, manufacture and project management of Selective Catalytic Reduction technology. WIP looks at two examples from London and Italy handled by the company where system designs, dosing system upgrades, catalyst replacement and everything from bulk urea tanks to heat & sound insulation materials have been supplied. commissioning’ in 2012 proved our skills in not only designing SCR systems but also supporting the installation. The client company in Italy ordered a compact Urea/AdBlue control and dosing system, with NOx sensing sensors allowing feed forward and feedback control of the Urea/AdBlue flow. The factory features a 400kW engine, and NOx reduction is >80% over 6,000 8,000 running hours every year. There are even plans to build a sister plant in Italy soon. David Kallman adds: “Agriemach was behind a 2013 London-based bio-diesel project which required both soot and NOx reduction. We met with the client to go through the engine details, fuel specification and space restrictions. With our combined years of experience and global knowledge, we were able to offer the complete solution from design, delivery to commissioning.” The London site features a fuel called FAME - Fatty Acid Methyl Ester. This is traditional biodiesel, produced by processing raw vegetable oil and/or animal fats. The resulting product is chemically different from petroleum diesel, has different properties, and meets a different quality standard. The most common feedstock for FAME biodiesel in the US is soyabean oil, but in Europe rapeseed or canola oil is typically used. The engine size at the London site was derated to 130kW, and NOx reduction has been estimated at 90%. Says David: “We work with many different fuel types from natural gas to a whole host of bio-fuels. Agriemach is a one-stop solution for meeting stationary engine emissions targets as we offer solutions for the reduction of NOx, Carbon Monoxide (CO), Hydrocarbons (HC), Particulates (PM), as well as supplying the Bulk Urea Tanks and Delivery, Compressor Units, Heat and Sound Insulation Materials, Exhaust Gas Heat Exchangers (EGHE) and Silencers.” He concludes: “We offer a complete solution. We design bespoke systems using CAD offering a seamless integration to our customers drawings. For certain challenges, we also offer Computational Fluid Dynamics (CFD) to ensure our design is going to work before releasing it to production. “ Internet link Internet link www.agriemach.com O CTOBER 2013 • WORLDWIDE I NDEPENDENT P OWER WIP

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