Demonstration of high-temperature metallic filters on sinter plant wind main gas
A demonstration project was carried out to evaluate the performance of a high temperature metallic filter (HTMF) on sinter plant wind main gas. The feasibility of the HTMF concept had previously been demonstrated (ECSC project 7210.AA/824) to be viable for use in sinter plants using a prototype system. The purpose of the present project was to evaluate the performance of a scaled-up version of the HTMF when operated continuously over an extended period. Unfortunately, a series of mechanical failures meant that time available for testing of the HTMF performance was more limited than planned and, despite two one-year extensions to the project, the technical evaluation of the HTMF was severely curtailed. Failure of the metallic mesh filter screens at the mid-point of the project was a major problem and required complete replacement and re-design of the filter elements. The refurbished filter achieved outlet emission concentrations down to 11 mg/Nm3, which is higher than that achievable using a conventional fabric filter. Emission concentrations of dioxins and polycyclic aromatic hydrocarbons were reduced by up to 75 % and 64 %, respectively, by injection of activated carbon into the waste gas stream. However, the injection of carbon led to an increase in particulate emission concentration, dependent on the carbon injection rate, owing to slippage of carbon by the filter. The ability of the HTMF to filter gases at temperatures of up to 700°C offers possibilities for energy, recovery, and with further development, could have strong potential for application.
Bibliographic Reference: EUR 23899 EN (2009), 72 pp. Euro: 15
Availability: http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=KINA23899 (Catalogue Number: KI-NA-23899-EN-S)
ISBN: ISBN: 978-92-79-12027-5
Record Number: 200910472 / Last updated on: 2009-10-12
Original language: en
Available languages: en