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Dr. Ian Chisem

Technical Director, Ceramic Filter Alliance, UK

Dr. Ian Chisem gained a PhD from the University of Cambridge in 1996 in novel inorganic layered complexes and their use as environmentally-friendly catalysts. Post-doctoral research followed, in Green Chemistry, supported reagents and heterogenous catalysts. He later joined MEL Chemicals, a leading supplier of zirconium-based chemicals, where he developed new manufacturing processes for high surface area doped zirconium oxides used in automotive catalyst washcoats. In 2007 Ian joined Clear Edge, now part of Filtration Group, where he managed development projects across wet and dry filtration applications. Ian developed hot gas ceramic filters for industrial air pollution control, to meet rigorous legislative requirements. He held the position of CTO for the Longking-Clear Edge Chinese joint venture, having played a major role in establishing a new ceramic filter production facility. Following the formation of Ceramic Filter Alliance in April 2022, Ian joined the team as Technical Director, leveraging his many years of ceramic product knowledge and hot gas filtration experience to provide unparalleled service to customers. 

Co-presented by Mr. Cameron Kiani, Senior Project Engineer, Precision Partners, USA 

Cameron has gained significant experience developing air pollution control projects which utilize innovative technologies to solve complex problems. Born and raised in California, Cameron graduated from the California Maritime Academy with a BS in Mechanical Engineering before working on a wide range of air pollution control projects, including industrial flue gas treatment, diesel exhaust capture and control, and waste heat recovery. He has been involved from initial project conceptualization to final optimization in the field, helping clients achieve long term environmental compliance. In 2019, Cameron managed the largest ceramic filter system installation in North America; retrofitting a site to remove wet scrubbers and replacing it with advanced ceramic filter technology. At Precision Partners, Cameron works within multidisciplinary teams to support our clients in the integration of our innovative ‘Environmental Compliance as a Service’ (E-CaaS) solutions.

Dec 5, 2023, 10:15AM -10:30AM EST

Recent Developments in Industrial Air Pollution Control Using Catalytic Ceramic Filters

Catalytic ceramic filter candles were originally developed twenty years ago. Following many successful deployments, the install base of these low-density ceramic filters, impregnated with an SCR catalyst, has grown rapidly to well over 200,000 units worldwide. Systems incorporating ceramic filter technology account for more than 90% of new or upgraded emission control installations in the US glass industry. Ceramics see widespread use in glass manufacturing plants throughout the world, together with an array of other applications including cement, biomass, chemical and mineral and waste incineration. Many jurisdictions are developing future regulations based on documented historical operations of ceramic filter systems.
Ceramic filters address air pollution control requirements at elevated temperatures from 175 to 450 °C. The technology affords simultaneous single-step removal of PM, NOX, SOX, HF, HCl, dioxins, metal oxides and VOCs. The optimized porosity of ceramic filters delivers effective surface filtration, achieving high PM removal efficiency (99.99%) and easy dust cake release via online reverse pulse air cleaning. The filters are capable of handling very high dust loads with low pressure drop. The SCR catalyst remains protected within the filter wall, so is less susceptible to catalyst poisoning and deactivation commonly associated with conventional SCR systems. As a result, when installed, commissioned, and operated correctly, filter lifetime may exceed ten years.
Recent advances in ceramic filter technology shall be outlined in the context of ever more stringent worldwide emission regulation and continued pressure on capital and operating costs. Further, future opportunities will be presented, including CO2 capture and waste heat recovery for power generation.

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